CN108080023A - Silica-nitrilotriacetic acid-platinum catalyst, preparation method and purposes - Google Patents
Silica-nitrilotriacetic acid-platinum catalyst, preparation method and purposes Download PDFInfo
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- CN108080023A CN108080023A CN201711385845.7A CN201711385845A CN108080023A CN 108080023 A CN108080023 A CN 108080023A CN 201711385845 A CN201711385845 A CN 201711385845A CN 108080023 A CN108080023 A CN 108080023A
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- sio
- silica
- reaction
- nitrilotriacetic acid
- catalyst
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 382
- 239000003054 catalyst Substances 0.000 title claims abstract description 130
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 120
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 133
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 69
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical compound ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 claims abstract description 37
- 125000004836 hexamethylene group Chemical class [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims abstract description 27
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000006459 hydrosilylation reaction Methods 0.000 claims abstract description 21
- -1 nitrilotriacetic acid platinum Chemical compound 0.000 claims abstract description 21
- 150000001336 alkenes Chemical class 0.000 claims abstract description 15
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 12
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 claims abstract description 10
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims abstract description 10
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 claims abstract description 6
- HFDVRLIODXPAHB-UHFFFAOYSA-N 1-tetradecene Chemical compound CCCCCCCCCCCCC=C HFDVRLIODXPAHB-UHFFFAOYSA-N 0.000 claims abstract description 5
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 96
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 50
- 235000019441 ethanol Nutrition 0.000 claims description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 238000013019 agitation Methods 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 23
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 19
- 229910002027 silica gel Inorganic materials 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 19
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 15
- 238000012986 modification Methods 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 14
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000010703 silicon Substances 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 12
- 230000004913 activation Effects 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 8
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical class CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000012265 solid product Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007259 addition reaction Methods 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- RYPKRALMXUUNKS-UHFFFAOYSA-N hex-2-ene Chemical class CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000000967 suction filtration Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 230000036571 hydration Effects 0.000 claims description 2
- 238000006703 hydration reaction Methods 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims 2
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 abstract description 6
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 abstract 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 abstract 1
- GQEZCXVZFLOKMC-UHFFFAOYSA-N n-alpha-hexadecene Natural products CCCCCCCCCCCCCCC=C GQEZCXVZFLOKMC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 description 52
- 229910052906 cristobalite Inorganic materials 0.000 description 52
- 229910052682 stishovite Inorganic materials 0.000 description 52
- 229910052905 tridymite Inorganic materials 0.000 description 52
- 239000000047 product Substances 0.000 description 30
- 239000000463 material Substances 0.000 description 29
- 206010001497 Agitation Diseases 0.000 description 23
- 230000003197 catalytic effect Effects 0.000 description 23
- 239000002904 solvent Substances 0.000 description 23
- 238000012360 testing method Methods 0.000 description 22
- 229960001866 silicon dioxide Drugs 0.000 description 20
- 125000005909 ethyl alcohol group Chemical group 0.000 description 19
- 238000005160 1H NMR spectroscopy Methods 0.000 description 18
- 238000005374 membrane filtration Methods 0.000 description 18
- 239000006228 supernatant Substances 0.000 description 18
- 230000003213 activating effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 238000006555 catalytic reaction Methods 0.000 description 12
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- 238000004064 recycling Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 229910010272 inorganic material Inorganic materials 0.000 description 5
- 239000011147 inorganic material Substances 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 125000003963 dichloro group Chemical group Cl* 0.000 description 4
- LFHKZPRSRNZHDM-UHFFFAOYSA-N dichloro-heptyl-methylsilane Chemical compound CCCCCCC[Si](C)(Cl)Cl LFHKZPRSRNZHDM-UHFFFAOYSA-N 0.000 description 4
- 229960001484 edetic acid Drugs 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- 150000004075 acetic anhydrides Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000003057 platinum Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- 125000000134 2-(methylsulfanyl)ethyl group Chemical group [H]C([H])([H])SC([H])([H])C([H])([H])[*] 0.000 description 1
- AUZZLPRNORGQFJ-UHFFFAOYSA-N C(CCCCCCCCCCCCCCCC)[Si](Cl)(Cl)C Chemical compound C(CCCCCCCCCCCCCCCC)[Si](Cl)(Cl)C AUZZLPRNORGQFJ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 101100373011 Drosophila melanogaster wapl gene Proteins 0.000 description 1
- 229910002621 H2PtCl6 Inorganic materials 0.000 description 1
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 1
- 208000036758 Postinfectious cerebellitis Diseases 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KTQYJQFGNYHXMB-UHFFFAOYSA-N dichloro(methyl)silicon Chemical compound C[Si](Cl)Cl KTQYJQFGNYHXMB-UHFFFAOYSA-N 0.000 description 1
- IDEKNJPMOJJQNQ-UHFFFAOYSA-N dichloro-methyl-(2-phenylethyl)silane Chemical group C[Si](Cl)(Cl)CCC1=CC=CC=C1 IDEKNJPMOJJQNQ-UHFFFAOYSA-N 0.000 description 1
- GOWVYJFXPWMIAL-UHFFFAOYSA-N dichloro-methyl-nonadecylsilane Chemical compound CCCCCCCCCCCCCCCCCCC[Si](C)(Cl)Cl GOWVYJFXPWMIAL-UHFFFAOYSA-N 0.000 description 1
- FHJGRFLPJKUUCT-UHFFFAOYSA-N dichloro-methyl-nonylsilane Chemical group C[Si](Cl)(Cl)CCCCCCCCC FHJGRFLPJKUUCT-UHFFFAOYSA-N 0.000 description 1
- QHBMMABVNRSRHW-UHFFFAOYSA-N dichloro-methyl-octylsilane Chemical group CCCCCCCC[Si](C)(Cl)Cl QHBMMABVNRSRHW-UHFFFAOYSA-N 0.000 description 1
- LOBDIZRLSBFDQH-UHFFFAOYSA-N dichloro-methyl-pentadecylsilane Chemical compound C(CCCCCCCCCCCCCC)[Si](Cl)(Cl)C LOBDIZRLSBFDQH-UHFFFAOYSA-N 0.000 description 1
- IMGGPOOJTROVQE-UHFFFAOYSA-N dichloro-methyl-tridecylsilane Chemical compound CCCCCCCCCCCCC[Si](C)(Cl)Cl IMGGPOOJTROVQE-UHFFFAOYSA-N 0.000 description 1
- BXHBZHQOZWEHGM-UHFFFAOYSA-N dichloro-methyl-undecylsilane Chemical compound CCCCCCCCCCC[Si](C)(Cl)Cl BXHBZHQOZWEHGM-UHFFFAOYSA-N 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007172 homogeneous catalysis Methods 0.000 description 1
- 239000002815 homogeneous catalyst Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003863 metallic catalyst Substances 0.000 description 1
- 239000005048 methyldichlorosilane Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000005311 nuclear magnetism Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 210000004483 pasc Anatomy 0.000 description 1
- 229960003330 pentetic acid Drugs 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0237—Amines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0254—Nitrogen containing compounds on mineral substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0271—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds also containing elements or functional groups covered by B01J31/0201 - B01J31/0231
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/14—Preparation thereof from optionally substituted halogenated silanes and hydrocarbons hydrosilylation reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/32—Addition reactions to C=C or C-C triple bonds
- B01J2231/323—Hydrometalation, e.g. bor-, alumin-, silyl-, zirconation or analoguous reactions like carbometalation, hydrocarbation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
Abstract
The present invention discloses a kind of silica nitrilotriacetic acid platinum catalyst, preparation method and purposes, and wherein preparation process mainly modifies SiO using NTA2‑NH2, obtain SiO2‑NTA；Platinum it is immobilized.The solid-carried catalyst is successfully applied in hydrosilylation, cyclic olefin (norbornene), styrene and the hydrosilylation of 2 hexenes and allyl chloride of chain type alkene (1 heptene, 1 hexene, 1 octene, 1 decene, 1 laurylene, 1 tetradecene, 1 hexadecylene, 1 octadecylene) and dimethyl dichlorosilane (DMCS).
Description
Technical field
The present invention relates to platinum catalyst preparing technical fields, and in particular to a kind of green polyaminopolycarboxylic group material modification
The preparation and application of silicon dioxide carried platinum catalyst more particularly to a kind of silica-nitrilotriacetic acid-platinum catalyst,
Preparation method and purposes.
Background technology
Platinum metal catalyst has wide range of applications as one kind, the heavy metal catalyst that dosage is big, is constantly subjected to both at home and abroad
The extensive concern of researcher is mainly used for being catalyzed in the important chemical reactions such as Si―H addition reaction, hydrogenation, oxidation, have higher
Industrial application value.Wherein hydrosilylation refers to that is occurred between organic or inorganic Si -- H bond and unsaturated multiple bond adds
Into reaction, Si-C keys can be formed so as to synthesize the organo-silicon compound of grafted functional group on carbon atom, be production organosilicon production
One of important method of product (such as silicone oil, silicon rubber, silicones and silane coupling agent).The silicon hydrogen industrially applied at present adds
Be mainly homogeneous platinum catalyst into catalysts, i.e. Speier ' s catalyst[1], Karstedt ' s catalyst[2]And Mark ó ' s
Catalyst[3], but because its have recycling is difficult, cannot reuse, selectivity is not high, reaction condition acutely, pollution environment etc. lacks
Point so that commercial Application is very restricted.Loaded platinum catalyst be by active ingredient platinum by impregnating, being co-precipitated, from
The methods of son exchanges is immobilized on specific carrier, since it is in from the reaction system of catalysis under different phases, it is easy to accomplish urge
The recycling and recycling of agent so that it becomes the emphasis and hot spot studied at present.Research for loaded platinum catalyst
On the premise of aiming at recoverable, reusing and stability, the enhancing catalytic activity and selection of catalyst are improved
Property, it works out and is suitable for industrial load type platinum metallic catalyst better than homogeneous catalyst.The support type reported at present
The inorganic material load platinum catalyst of the main organic and/or inorganic materials of platinum catalyst, organic polymer or organic functional group modification, wherein
Carrier swelling easily occurs during the reaction for the metallic platinum catalyst using polymer as immobilized material, influences catalytic effect, and
Inorganic material is due to stronger rigid structure, high mechanical strength, with higher physics and chemical stability so as to it
Research is more extensive.This seminar[4]Ethylenediamine tetra-acetic acid (EDTA) is successfully grafted on the silica gel of APTES modifications, with
H2PtCl6For platinum source, a kind of new silica gel load EDTA platinum catalysts SiO is prepared for2- EDTA-Pt, and with 1- hexenes and first
The hydrosilylation of base dichloro hydrogen silicon is template reaction, the results showed that the catalyst has higher catalytic activity and selection
Property.Hu[5]Et al. using one-step method, with Si (OC2H5)4With Si (OMe)3(C3H7S it is) silicon source, in water/acetonitrile/dodecyl amine
In mixed liquor, a kind of new ultramicropore SiO is prepared for2The colloid Pt catalyst of load, this catalyst 1- octenes and first
Base dichloro hydrogen pasc reaction has higher active and selective.In addition, the load platinum catalyst of more reports is with sulfur-bearing, phosphorus etc.
For the inorganic material of base group modification as material is loaded, these catalyst are unstable at high temperature due to containing the elements such as sulphur, phosphorus,
Sulphur, phosphorus formation catalyst poison easy to fall off, influence catalytic effect；There is selective not high, recycling in fractional load platinum catalyst
The shortcomings such as property is low.Therefore, develop it is a kind of with high catalytic activity, highly selective, stability is high, repeatable utilizes number
More, environmentally protective loaded platinum catalyst is still the important directions of load platinum catalyst research.
[bibliography]
[1].Speier J L.Homogeneous catalysis of hydrosilation by transition
metals[J].Advances in Organometallic Chemistry,1979,17:407-447.
[2].Karstedt B.Platinum complexes of unsaturated siloxanes and
platinum containing organopolysiloxanes:US,US 3814730[P].1973.
[3].Markó I E,Stérin S,Buisine O,Mignani G,Branlard P,Tinan B,
Declercq J P.Selective and efficient platinum(0)-carbene complexes as
hydrosilylation catalysts[J].Science,2002,298(5591):204-206.
[4].Li F T,Li Y X.Preparation of efficient and environment-friendly
silica-supported EDTA platinum catalyst and its applications in
hydrosilylation of olefins and methyldichlorosilane[J].Journal of Molecular
Catalysis A:Chemical.2016,420:254-263.
[5].Hu W B,Xie H L,Yue H B,et al.Super-microporous silica-supported
platinum catalyst for highly regioselective hydrosilylation[J].Catalysis
Communications,2017,97:51-55.
The content of the invention
Some existing problems for the above-mentioned prior art, the present invention are made by choosing inorganic material silica gel cheap and easy to get
It for immobilized material, selects and is easy to the polyaminopolycarboxylic group compound of adsorbing metal as decorative material, carrying out functionalization to silica gel repaiies
Decorations, obtain the load platinum catalyst of high-activity high-selectivity.
In order to solve the above-mentioned technical problem, first technical solution proposed by the present invention is：Three second of silica-nitrilo-
Acid-platinum catalyst, element contained by the loaded platinum catalyst：C, H, O, N, Si, Pt, Cl, wherein Pt are deposited with relatively low reduction-state
In catalyst；Wherein Pt contents are 0.150mmol/g.
Second technical solution of the invention be：Silica-nitrilotriacetic acid-platinum catalyst preparation method, including such as
Lower step：1), the silica of functional modification activation, obtains amino bonded silica gel, is denoted as：SiO2-NH2；
2) amino bonded silica, is modified using nitrilotriacetic acid, obtains silica-nitrilotriacetic acid, is remembered
Make：SiO2-NTA；3) it is, that platinum is immobilized to above-mentioned steps 2) in silica-nitrilotriacetic acid, obtain load platinum catalyst：
(1), compound concentration is chloroplatinic acid-aqueous isopropanol of 0.0386mol/L, by volume 1：10 measure
Chloroplatinic acid-aqueous isopropanol of 0.0386mol/L is added separately to obtained solution A in four-hole bottle with organic solvent absolute ethyl alcohol；
(2), above-mentioned steps 2 are weighed) made from silica-nitrilotriacetic acid be added in above-mentioned solution A, wherein,
Silica-nitrilotriacetic acid and the mass ratio of six hydration chloroplatinic acids are 10：1, in external temperature 100 DEG C (interior 78 DEG C of temperature)
Under, lead to nitrogen, condensation, mechanic whirl-nett reaction 9h；
(3), after reaction, centrifuge, 3 are washed with organic solvent (absolute ethyl alcohol)~5 times, 60 ± 1 DEG C of dry 12h,
Loaded platinum catalyst silica-nitrilotriacetic acid-platinum is obtained, is denoted as:SiO2-NTA-Pt。
The silica that functional modification activates in the step 1), step are as follows：
(1), weigh activated silica to be placed in there-necked flask, sequentially add toluene, 3- aminopropyl triethoxysilanes,
110 ± 1 DEG C of 24 ± 1h of mechanical agitation, rubbing between silicone hydroxyl and 3- aminopropyl triethoxysilanes that activated silica contains
You are than being 1：1.5~2；
(2), solid product B after reaction, is obtained through separation of solid and liquid after suction filtration, washs solid with toluene, acetone respectively
Product B, 70 ± 1 DEG C of forced air dryings are for 24 hours to get to aminopropyl bonded silica.
Amino bonded silica is modified using nitrilotriacetic acid in the step 2), it is specific as follows：
(1), amino bonded silica and nitrilotriacetic acid are weighed in step 1) in there-necked flask, wherein, amino linkage
The mass ratio for closing silica and nitrilotriacetic acid is 1：1.2, ethyl alcohol, acetic acid are sequentially added, wherein, the body of ethyl alcohol and acetic acid
Product is than being 1:1,70 ± 1 DEG C of mechanic whirl-nett reaction is for 24 hours；
(2), after reaction, it is cooled to room temperature suction filtration and obtains solid product F, successively with acetone, water washing solid production
Object F, 60 ± 1 DEG C of vacuum drying are for 24 hours to get silica-nitrilotriacetic acid.
The present invention the 3rd technical solution be：Silica-nitrilotriacetic acid-platinum catalyst purposes, applied to alkene
The hydrosilylation of hydrocarbon and silane containing hydrogen.
Silicon applied to the hydrosilylation of chain type alkene and dimethyl dichlorosilane (DMCS), cyclic olefin and dimethyl dichlorosilane (DMCS)
The silicon hydrogen of addition reaction of hydrogen, the hydrosilylation of styrene and allyl chloride and 2- hexenes and allyl chloride adds
Into reaction.
The chain type alkene includes 1- heptene, 1- hexenes, 1- octenes, 1- decene, 1- laurylenes, 1-tetradecylene, 1- 16
Alkene, 1- octadecylenes.
The cyclic olefin includes norbornene.
Catalyst SiO of the present invention2- NTA-Pt is for 1- hexenes and the hydrosilylation of dimethyl dichlorosilane (DMCS), TOF=
1.27S-1, yield is up to 94.4%, and yield remains above 80% after reusing 7 times, is catalyzed other alkene and allyl chloride
Hydrosilylation conversion ratio is all up to more than 90%.
The characterization of catalyst：To obtained load platinum catalyst respectively using the infrared spectrometer (IR) of Bruker companies,
The transmission electron microscope (TEM) of JEOL companies, energy disperse spectroscopy (EDS), the x-ray photoelectron spectroscopy of Perkinelmer companies of Oxford companies
Instrument (XPS) carries out characterization test；Using Hitachi companies Atomic absorption (AAS) to the load capacity of platinum in supported catalyst into
Row test；The raffinate of immobilized front and rear chloroplatinic acid is tested using the ultraviolet specrophotometer (UV) of Hitachi companies；Make
The reaction system of catalysis is detected with gas chromatograph (GC)；Using the nuclear-magnetism (NMR) of Bruker companies to catalysate
Carry out qualitative analysis.
Solid-carrying type platinum catalyst made from preparation method of the present invention, shows following physicochemical characteristic：
(1) appearance：Yellow powder；
(2) EDS and XPS tests element contained by the loaded platinum catalyst：C, H, O, N, Si, Pt, Cl, wherein Pt is with relatively low
Reduction-state be present in catalyst；
(3) loaded platinum catalyst SiO is measured with atomic absorption spectrography (AAS) AAS2The content of Pt is in-NTA-Pt
0.150mmol/g。
Compared with prior art, the present invention has the advantage that：
(1) infrared spectrogram of load platinum catalyst produced by the present invention, transmission electron microscope picture, energy spectrum diagram and related data can
Show that platinum has successfully been immobilized on the earth silicon material of polyaminopolycarboxylic group modification, XPS the results shows Pt is mostly with reduction-state
Form is present in this catalyst.
(2) AAS results further confirm that platinum success is immobilized on selected materials, and the supported quantity of platinum is by immobilized temperature, molten
The influence of the decorative material of matchmaker and selection.
(3) the results show that the valence state of Pt is influenced by immobilized temperature, temperature rise is conducive to platinum and is converted to reduction-state UV.
(4) for GC and NMR the results show that under optimal catalytic condition, which has higher catalytic activity and choosing
Selecting property.
(5) separation of catalyst system and catalyzing and catalyst is realized by simply centrifuging, can be repeated without any processing
It uses.
(6) using the high silica gel material of nontoxic cheap, large specific surface area, physical and chemical stability as the material of immobilized platinum,
The polyaminopolycarboxylic group material modified silica-gel for containing and being easy to metal combination is chosen, and sulphur, phosphorus etc. are not contained in these decorative materials
Element meets the theory of Green Chemistry.
(7) feasibility of the method for the immobilized metal platinum of support materials of the present invention is demonstrated, is other polyaminopolycarboxylic group materials
Material provides reference applied to the research of load platinum catalyst.
Description of the drawings
Fig. 1 is the load material SiO of load platinum catalyst of the present invention2The preparation flow figure of-DTPA；
Fig. 2 is the load material SiO of load platinum catalyst of the present invention2The preparation flow figure of-NTA；
Fig. 3 is the load material SiO of load platinum catalyst of the present invention2The preparation flow figure of-SA；
Fig. 4 is the infared spectrum of DTPAD in preparation method step 2 of the present invention；
Fig. 5 is DTPAD in preparation method step 2 of the present invention1HNMR collection of illustrative plates；
Fig. 6 is DTPAD in preparation method step 2 of the present invention13CNMR collection of illustrative plates；
Fig. 7 is the plinth material silica gel of load platinum catalyst of the present invention, amino bonded silica gel SiO2-NH2, load material SiO2-
DTPA and obtained load platinum catalyst SiO2The infared spectrum of-DTPA-Pt；
Fig. 8 is the plinth material silica gel of load platinum catalyst of the present invention, amino bonded silica gel SiO2-NH2, load material SiO2-
NTA and obtained load platinum catalyst SiO2The infared spectrum of-NTA-Pt；
Fig. 9 is the plinth material silica gel of load platinum catalyst of the present invention, amino bonded silica gel SiO2-NH2, load material SiO2-
SA and obtained load platinum catalyst SiO2The infared spectrum of-SA-Pt；
Figure 10 is load platinum catalyst SiO of the present invention2The TEM collection of illustrative plates of-DTPA-Pt；
Figure 11 is load platinum catalyst SiO of the present invention2The TEM collection of illustrative plates of-NTA-Pt；
Figure 12 is load platinum catalyst SiO of the present invention2The TEM collection of illustrative plates of-SA-Pt；
Figure 13 is load platinum catalyst SiO of the present invention2The EDS collection of illustrative plates of-DTPA-Pt；
Figure 14 is load platinum catalyst SiO of the present invention2The EDS collection of illustrative plates of-NTA-Pt；
Figure 15 is load platinum catalyst SiO of the present invention2The EDS collection of illustrative plates of-SA-Pt；
Figure 16 is load platinum catalyst SiO of the present invention2The XPS collection of illustrative plates of-DTPA-Pt；
Figure 17 is load platinum catalyst SiO of the present invention2The XPS collection of illustrative plates of-NTA-Pt；
Figure 18 is load platinum catalyst SiO of the present invention2The XPS collection of illustrative plates of-SA-Pt；
Figure 19 is load platinum catalyst SiO of the present invention2-DTPA-Pt、SiO2-NTA-Pt、SiO2The 4f of Pt in-SA-Pt
XPS collection of illustrative plates；
Figure 20 is load platinum catalyst SiO of the present invention2-DTPA-Pt、SiO2-NTA-Pt、SiO2- SA-Pt catalytic templatings are anti-
The product GC collection of illustrative plates answered, using n-decane as internal standard, using temperature programming.GC conditions：30m×0.25mm×0.25μm SE-54
Low pole chromatographic column, hydrogen flame detector, gasify room temperature：260 DEG C, detector temperature：260 DEG C, column temperature：60 DEG C of initial temperature is protected
3min is held, heating rate is 10 DEG C/min, and 250 DEG C of final temperature keeps 5min；
Figure 21 is the product n-hexyl dimethyl dichlorosilane (DMCS) of catalytic templating reaction1HNMR collection of illustrative plates；
Figure 22 is load platinum catalyst SiO of the present invention2- DTPA-Pt and SiO2The reaction temperature of-NTA-Pt catalytic templatings reaction
The condition of degree investigates figure；
Figure 23 is load platinum catalyst SiO of the present invention2- DTPA-Pt and SiO2During the reaction of-NTA-Pt catalytic templatings reaction
Between condition investigate figure；
Figure 24 is load platinum catalyst SiO of the present invention2- DTPA-Pt and SiO2The reactant of-NTA-Pt catalytic templatings reaction
Expect that the condition of ratio investigates figure；
Figure 25 is load platinum catalyst SiO of the present invention2-DTPA-Pt、SiO2-NTA-Pt、SiO2- SA-Pt catalytic templatings are anti-
The condition investigation figure for the material addition sequence answered；
Figure 26 is load platinum catalyst SiO of the present invention2-DTPA-Pt、SiO2-NTA-Pt、SiO2- SA-Pt catalytic templatings are anti-
The possible reaction mechanism figure answered；
Figure 27 is load platinum catalyst SiO2The UV collection of illustrative plates of chloroplatinic acid raffinate after being reacted at a temperature of-DTPA-Pt different loads；
Figure 28 is load platinum catalyst SiO of the present invention2-DTPA-Pt、SiO2The reuse number figure of-NTA-Pt.
Specific embodiment
Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, it is described specific
Embodiment is only explained the present invention, is not intended to limit the invention.
Embodiment 1：
The preparation of the silicon dioxide carried platinum catalyst of polyaminopolycarboxylic group material modification, is as follows：
Step 1: the amino functional modification of substantially immobilized material silica：By SiO260 DEG C are placed in the hydrochloric acid of 6M
Flow back 6h, and after reaction, distillation is washed to neutrality, is placed in air dry oven after drying and obtains acidifying silica gel.Take acidifying silicon
Glue is placed in 130 DEG C of vacuum drying chambers and activates 3h, the SiO activated2.Weigh 5g activation SiO2It is placed in equipped with 50mL toluene
In there-necked flask, 7mL APTES, that is, 3- aminopropyl triethoxysilanes are added in, 110 DEG C of mechanical agitations are for 24 hours；After reaction, filter
Separation of solid and liquid is carried out, and uses toluene, acetone washed product respectively, and product is placed in drying in 70 DEG C of air dry ovens and for 24 hours, is obtained
To amino bonded silica gel (APSG).
It is prepared Step 2: inquiring into three kinds of intermediates：
The first：Silica-diethyl pentetic acid (SiO2- DTPA) preparation：Weigh 23g diethyl triamines five
Acetic acid (DTPA) is placed in 100mL three-neck flasks, while adds in 23mL acetic anhydrides and 30mL, pyridine, n (acid)：N (acetic anhydride)：n
(pyridine)=1:4:The one straight condenser with drying tube of installation above 6 flasks, at 65 DEG C constant temperature, stirring, reflux for 24 hours, stop
It only heats and stirs, filter reaction mixture after being cooled to room temperature, and washed three times with a small amount of ether, drained, to obtain the final product
White DTPA acid anhydrides crude product.Crude product is placed in 250mL conical flasks, adds people's 58mL acetic anhydrides, sealed membrane sealing carries out interval and stirs
It mixes.Filtered after 30min, with a small amount of acetic anhydride washed solid three times, then with a small amount of anhydrous ether wash three times, take out
It is dry.Product is placed in vacuum drying oven in 70 DEG C of vacuum drying, obtains DTPAD；Weigh respectively 6g DTPAD with
2gAPSG is placed in 100mL three-necked bottles, sequentially adds 36mL absolute ethyl alcohols and 36mL acetic acid (1:1), machinery stirs at 70 DEG C
It mixes, reaction is taken out after reaction solution is cooled to room temperature and filtered afterwards for 24 hours, and is respectively placed in product with being drained after acetone and water washing
It is dried in 70 DEG C of drying boxes for 24 hours to get SiO2- DTPA, as shown in Figure 1.
Second：Silica-nitrilotriacetic acid (SiO2- NTA) preparation：Weigh 2g nitrilotriacetic acids (NTA) in
In 100mL three-necked bottles, while ethyl alcohol and each 30mL of acetic acid are added in, stop reaction afterwards for 24 hours in 70 DEG C of mechanical agitations, be cooled to room temperature
Product is placed in 60 DEG C of drying boxes and is dried for 24 hours, up to SiO with acetone and distillation water washing respectively2- NTA, as shown in Figure 2.
The third：Silica-succinic acid (SiO2- SA) preparation：Succinic anhydride 6g is weighed in 100mL three-necked bottles,
60mL dioxane is added in, stops reaction afterwards for 24 hours in 70 DEG C of mechanical agitations, is cooled to room temperature product respectively with acetone, methanol, steaming
Distilled water washing, which is placed in 60 DEG C of drying boxes, to be dried for 24 hours, up to SiO2- SA, as shown in Figure 3.
Step 3: the earth silicon material that the immobilized three kinds of polyaminopolycarboxylic groups prepared into above-mentioned steps two of platinum are modified
On, obtain three kinds of load platinum catalysts：Solution A is first prepared, 1g six is hydrated chloroplatinic acid is dissolved in 50mL isopropanols, obtains concentration
For chloroplatinic acid-aqueous isopropanol of 0.0386mol/L：
(a), SiO is weighed2- DTPA0.8g is separately added into 8mL0.0386mol/L H in 100mL four-necked bottles2PtCl6-
IPrOH solution, 80mL absolute ethyl alcohols lead to N at 78 DEG C2Protection, mechanical agitation 9h after reaction, centrifuge, use ethyl alcohol
Washing is placed in 60 DEG C of drying boxes dry 12h for 3 times to get to SiO2- DTPA load platinum catalysts (SiO2-DTPA-Pt)；
(b), SiO is taken2- NTA0.8g is separately added into 8mL0.0386mol/L H in 100mL four-necked bottles2PtCl6-iPrOH
Solution, 80mL absolute ethyl alcohols lead to N at 78 DEG C2Protection, mechanical agitation 9h after reaction, centrifuge, 3 are washed with ethyl alcohol
It is secondary to be placed in 60 DEG C of drying boxes dry 12h to get to SiO2- NTA load platinum catalysts (SiO2-NTA-Pt)；
(c), SiO is taken2- SA0.8g is separately added into 8mL0.0386mol/L H in 100mL four-necked bottles2PtCl6-iPrOH
Solution, 80mL absolute ethyl alcohols lead to N at 78 DEG C2Protection, mechanical agitation 9h after reaction, centrifuge, 3 are washed with ethyl alcohol
It is secondary to be placed in 60 DEG C of drying boxes dry 12h to get to SiO2- SA load platinum catalysts (SiO2-SA-Pt)。
Embodiment 2：
To the IR of related substances in embodiment 1,1HNMR、13CNMR, TEM, EDS and XPS are characterized：Using IR methods to DTPAD
Structure tentatively confirmed.As shown in figure 4,1816,1770,1641cm-1Wait the knot of the appearance preliminary identification product of characteristic peaks
Structure；DTPAD is dissolved in DMSO and is carried out1HNMR and13CNMR is characterized, DTPAD's1HNMR as shown in figure 5,2.96 (d, 4H),
3.15 (s, 4H's), 3.47 (s, 8H), 3.75 (s, 1H) and DTPAD13CNMR as shown in fig. 6,49.47 (2C), 51.48 (2C),
54.81 (4C), 168.90 (1C), 172.57 (4C) as a result further demonstrate the structure of DTPAD.It compared in Fig. 7 results
SiO2、SiO2-NH2、SiO2-DTPA、SiO2The difference of the IR absworption peaks of-DTPA-Pt, Fig. 8 compared SiO2、SiO2-NH2、
SiO2-NTA、SiO2The IR absworption peaks of-NTA-Pt, SiO2、SiO2-NH2、SiO2-SA、SiO2The difference of the IR absworption peaks of-SA-Pt
As shown in figure 9, comparing result preliminary identification has successfully carried out silica gel the immobilized of the functional modification agent platinum of polyaminopolycarboxylic group.
Three kinds of catalyst are further verified with TEM and EDS, such as Figure 10, shown in 11,12, TEM the results shows Pt is successfully born
It is loaded on three kinds of silica-gel carriers, EDS results such as Figure 13, shown in 14,15, C, H, O, N, Si, Cl, the appearance of the elements such as Pt is further
Show successfully to have carried out modification to silica gel and platinum is immobilized.XPS results such as Figure 16 of carboxyl polyamino more than three kinds, shown in 17,18, into
One step demonstrates C, H, O, N, Si, Cl, the presence of Pt elements, and Figure 19 shows that Pt is supported on three kinds of polyaminopolycarboxylic groups with reduction-state
In silica gel material.
Embodiment 3：
Three parts of 0.01mol 1- hexenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests, GC results are as schemed
Shown in 20, compared with the GC retention times of n-hexyl dimethyl dichlorosilane (DMCS) standard items, it is target that can primarily determine that product
Product n-hexyl dimethyl dichlorosilane (DMCS), calculating the yield that three kinds of catalyst 1- hexenes are reacted with allyl chloride is respectively
99.6%, 94.4%, 97.1%, catalytic effect is as shown in table 1.Product is carried out1H NMR are analyzed, as a result as shown in figure 21,1H NMR(CDCl3)δ:1.50(m,2H),1.38(dt,2H),1.30(dd,4H),1.12(dd,2H),0.89(t,3H),0.77
(s,3H).According to the chemical shift of different hydrogen and a point situation is split, may further determine that the structure of product.
Embodiment 4：
10 parts of 0.01mol 1- hexenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), respectively 40 DEG C, 50 DEG C, 60
DEG C, 70 DEG C, 80 DEG C activation 30min；0.018mol allyl chlorides are added in, seal and add condensing unit, the reaction was continued
4h；After reaction, it is cooled to room temperature, takes supernatant, carry out membrane filtration, GC tests, GC results is as shown in figure 22, when reaction temperature
Spend for 60 DEG C when, the catalysis yield of two kinds of catalyst reaches highest, be 99.6% and 94.4%.
Embodiment 5：
10 parts of 0.01mol 1- hexenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), activated at 60 DEG C
30min；0.018mol allyl chlorides are added in, are sealed simultaneously plus condensing unit, respectively the reaction was continued 0.5h, 1h, 2h, 3h,
4h after reaction, is cooled to room temperature, and takes supernatant, carries out membrane filtration, GC tests, GC results are as shown in figure 23, when reacted
Between when being 4h, the catalysis yields of two kinds of catalyst reaches maximum.
Embodiment 6：
12 parts of 0.01mol 1- hexenes are measured respectively to be placed in different centrifuge tubes, and are separately added into and are prepared according to the present invention
Method, platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is lower at 78 DEG C prepares
SiO2(amount containing Pt is 2.8 × 10 to-DTPA-Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol) each 6 parts,
30min is activated at 60 DEG C；It is separately added into 0.05mol, 0.01mol, 0.014mol, 0.018mol, 0.02mol, 0.022mol
Allyl chloride, sealing plus condensing unit, 60 DEG C of the reaction was continued 4h.After reaction, it is cooled to room temperature, takes supernatant, film
Filtering, GC tests.As a result as shown in figure 24, when the ratio and n (allyl chloride) of reactant：N (1- hexenes)=1.8:1
When, the catalysis yield of two kinds of catalyst reaches maximum.
Embodiment 7：
5 parts of 0.01mol 1- hexenes are measured respectively to be placed in different centrifuge tubes, are separately added into SiO2-DTPA-Pt(1.1×
10-3mmol,1.4×10-3mmol,2.8×10-3mmol,4.3×10-3mmol,5.7×10-3Mmol Pt), 60 DEG C of activation
30min is separately added into 0.018mol allyl chlorides, seals and adds condensing unit.60 DEG C of the reaction was continued 4h.Reaction terminates
Afterwards, it is cooled to room temperature, takes supernatant, membrane filtration, GC tests.The results show works as catalyst SiO2The dosage of-DTPA-Pt is 2.8
×10-3During mmol, yield reaches highest.Related catalyst SiO2- NTA-Pt and SiO2The catalysis material addition sequence of-SA-Pt
Influence experiment and SiO2The experimental procedure of-DTPA-Pt is essentially identical, the difference is that only SiO2-NTA-Pt(7.5×10- 4mmol,1.5×10-3mmol,2.3×10-3mmol,3.0×10-3mmol,3.8×10-3Mmol Pt), SiO2-SA-Pt(1.1
×10-3mmol,1.7×10-3mmol,2.4×10-3mmol,2.9×10-3mmol,5.6×10-3mmol Pt).The results show
As catalyst SiO2The dosage of-NTAA-Pt is 2.3 × 10-3During mmol, catalyst SiO2The dosage of-DTPA-Pt is 2.9 × 10- 3During mmol, yield reaches highest.
Embodiment 8：
Measured respectively according to preparation method of the present invention, platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is second
Alcohol, immobilized temperature are the SiO prepared at 78 DEG C2(amount containing Pt is 2.8 × 10 to-DTPA-Pt-3Mmol) it is added to different centrifuge tubes
In, number 1,2,3；0.18mol allyl chlorides are added in No. 1 centrifuge tube, are added in after activating 30min at 60 DEG C
0.01mol 1- hexenes seal and add condensing unit, continue at 60 DEG C and react 4h；0.18mol methyl is added in No. 2 centrifuge tubes
Dichloro hydrogen silicon and 0.01mol 1- hexenes seal and condensing unit are added to react 4h in 60 DEG C；0.01mol is added in No. 3 centrifuge tubes
1- hexenes add in 0.18mol allyl chlorides after 30min is activated at 60 DEG C, seal and add condensing unit, continue at 60 DEG C
Lower reaction 4h；After reaction, it is cooled to room temperature respectively, takes supernatant respectively, GC tests are carried out after membrane filtration.As a result such as Figure 25
Shown, the yield of No. 3 reactions is maximum, i.e., optimal reaction sequence is：First plus 1- hexenes after activation of catalyst 30min with adding
Allyl chloride reacts.Related catalyst SiO2- NTA-Pt and SiO2The influence experiment of the catalysis material addition sequence of-SA-Pt
With SiO2The experimental procedure of-DTPA-Pt is essentially identical, the difference is that only SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt- 3Mmol), SiO2(amount containing Pt is 2.9 × 10 to-SA-Pt-3mmol).The optimal reaction sequence of three kinds of catalyst for first plus 1- oneself
Alkene is with adding allyl chloride reaction after activation of catalyst 30min.
Theoretical according to Chalk-Harrod theories and this experimental result and Chalk-Harrod, the present invention proposes polyamino
More carboxyl load platinum catalyst SiO2- APCAs-Pt is catalyzed n-hexylene and the possibility mechanism of allyl chloride reaction, such as Figure 26
It is shown, mainly there are 4 steps：(1) n-hexylene is adsorbed onto platinum grain surface and forms Pt- n-hexylene ligands；(2) allyl chloride to
Ligand attack carries out oxidation addition；(3) n-hexylene double bond is inserted into Pt-H keys (4) reduction elimination reaction, generates and discharges
Go out Si―H addition reaction final product.
Embodiment 9：
SiO2The preparation of-DTPA-Pt catalyst, step is substantially the same manner as Example 1, is different only in that, step 5 platinum
It is immobilized in, immobilized temperature is changed to 25 DEG C, 43 DEG C, 62 DEG C, 75 DEG C, 78 DEG C.
Embodiment 10：
Measure the loaded platinum catalyst SiO at different immobilized temperature in embodiment 9 respectively using AAS2- DTPA-Pt's
Platinum content.5 parts of 0.01mol 1- hexenes are measured respectively to be placed in centrifuge tube, and are separately added into what is obtained in above-described embodiment 9
SiO2(amount containing Pt is 2.8 × 10 to-DTPA-Pt-3Mmol), 0.018mol methyl dichloros are separately added into after activating 30min at 60 DEG C
Hydrogen silicon seals and adds condensing unit.60 DEG C of the reaction was continued 0.5h, 1h, 2h, 3h, 4h.After reaction, it is cooled to room temperature, takes
Clear liquid, membrane filtration, GC tests.The results are shown in Table 2, according to result immobilized temperature can be drawn to catalyst SiO2- DTPA-Pt's
Catalytic effect has a certain impact, the immobilized SiO at 78 DEG C2- DTPA-Pt is urged with shortest induction period and with highest
Change yield and maximum TOF values.
The immobilized liquid of platinum under different temperatures is measured using UV, as a result as shown in figure 27, with the liter of immobilized temperature
Height, maximum absorption wavelength can change, and when immobilized temperature is to be raised by 25 DEG C to 78 DEG C, platinum is from+4 valencys to 0 valence transition
It is more and more.It can be drawn according to result：Higher immobilized temperature is conducive to high price platinum and is reduced to lower valency, so as to improve catalysis
The catalytic effect of agent.
Embodiment 11：
SiO2The preparation of-DTPA-Pt catalyst, step is substantially the same manner as Example 10, is different only in that, step 5 platinum
It is immobilized in, for solvent by being changed to ethyl alcohol with isopropanol, immobilized temperature is 78 DEG C, and after reaction, the washing of product is by with second
Alcohol washing is changed to be washed with isopropanol.
Embodiment 12：
SiO2The preparation of-DTPA-Pt catalyst, step is substantially the same manner as Example 10, is different only in that, step 5 platinum
It is immobilized in, for solvent by being changed to ethyl alcohol with n-butanol, immobilized temperature is 78 DEG C, and after reaction, the washing of product is by with second
Alcohol washing is changed to be washed with n-butanol.
Embodiment 13：
SiO2The preparation of-DTPA-Pt catalyst, step is substantially the same manner as Example 10, is different only in that, step 5 platinum
It is immobilized in, for solvent by being changed to ethyl alcohol with n-hexyl alcohol, immobilized temperature is 78 DEG C, and after reaction, the washing of product is by with second
Alcohol washing is changed to be washed with n-hexyl alcohol.
Embodiment 14：
It measures the platinum containing amount that solid-carrying type platinum catalyst is obtained in above-described embodiment 11 to 13 respectively using AAS, and adds respectively
Enter the SiO obtained in above-described embodiment 11 to 132(amount containing Pt is 2.8 × 10 to-DTPA-Pt-3Mmol), 30min is activated at 60 DEG C
After be separately added into 0.018mol allyl chlorides, seal simultaneously plus condensing unit.60 DEG C of the reaction was continued 0.5h, 1h, 2h, 3h, 4h.
After reaction, it is cooled to room temperature, takes supernatant, membrane filtration, GC tests.The results are shown in Table 3, can be drawn according to result immobilized
Solvent is to catalyst SiO2The catalytic effect of-DTPA-Pt has a certain impact, using ethyl alcohol as solvent when immobilized SiO2-DTPA-
Pt is with shortest induction period and with highest catalysis yield and maximum TOF values.
Embodiment 15：
Three parts of 0.01mol 1- hexenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.It continues up and states
0.01mol 1- hexenes are separately added into three centrifuge tubes, after 60 DEG C activate 30min, are separately added into 0.018mol methyl dichloro hydrogen
Silicon seals simultaneously plus condensing unit, the reaction was continued 4h, recycling investigation is carried out to three kinds of catalyst.As a result it is as shown in figure 28, with
Ethyl alcohol is solvent, the solid-carried catalyst SiO prepared at 78 DEG C2- DTPA-Pt is being reused 13 times, and yield can still reach
80%；SiO2Yield is still more than 82% after-NTA-Pt is reused 7 times；SiO2- SA-Pt yields after recycling for the second time
Drop to 62%.
Embodiment 16：
Three parts of 0.01mol 1- heptene are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR results
The structure for demonstrating product is n-heptyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.
Embodiment 17：
Three parts of 0.01mol 1- octenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR results
The structure for demonstrating product is n-octyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.
Embodiment 18：
Three parts of 0.01mol 1- decene are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR results
The structure for demonstrating product is positive decyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.
Embodiment 19：
Three parts of 0.005mol 1- laurylenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation side of the invention
Method, platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-
(amount containing Pt is 2.8 × 10 to DTPA-Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (contains
Pt amounts are 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and is added
Condensing unit, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR
The structure of result verification product is positive dodecyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.
Embodiment 20：
Three parts of 0.005mol 1-tetradecylenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation side of the invention
Method, platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-
(amount containing Pt is 2.8 × 10 to DTPA-Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (contains
Pt amounts are 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and is added
Condensing unit, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR
The structure of result verification product is positive tetradecyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.
Embodiment 21：
Three parts of 0.005mol 1- hexadecylenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation side of the invention
Method, platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-
(amount containing Pt is 2.8 × 10 to DTPA-Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (contains
Pt amounts are 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and is added
Condensing unit, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR
The structure of result verification product is positive palmityl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.
Embodiment 22：
Three parts of 0.005mol 1- octadecylenes are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation side of the invention
Method, platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-
(amount containing Pt is 2.8 × 10 to DTPA-Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (contains
Pt amounts are 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and is added
Condensing unit, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR
The structure of result verification product is positive octadecyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.The result of example 16-22 can be with
Draw three kinds of catalyst SiO that the method for the present invention is prepared2-DTPA-Pt,SiO2-NTA-Pt,SiO2- SA-Pt can be preferable
It is catalyzed the hydrosilylation of chain type alkene and allyl chloride.
Embodiment 23：
Three parts of 0.01mol styrene are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention, platinum
It is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-Pt
(amount containing Pt is 2.8 × 10-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2(amount containing Pt is-SA-Pt
2.9×10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation dress
It puts, the reaction was continued 4h, after reaction, is cooled to room temperature, take supernatant, carry out membrane filtration, GC tests.1HNMR results are tested
The structure for having demonstrate,proved product is phenethylmethyldichlorosilane.The results are shown in Table 4.The result shows that the method for the present invention was prepared
Three kinds of catalyst SiO2-DTPA-Pt,SiO2-NTA-Pt,SiO2- SA-Pt is not limited to catalysis chain type alkene and methyl dichloro hydrogen
The hydrosilylation of silicon, also can efficient catalytic styrene and allyl chloride hydrosilylation.
Embodiment 24：
Three parts of 0.01mol norbornene are measured respectively to be placed in centrifuge tube, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR results
The structure for demonstrating product is norbornylmethyl dichlorosilane.The results are shown in Table 4.The result shows that the method for the present invention is prepared into
The three kinds of catalyst SiO arrived2-DTPA-Pt,SiO2-NTA-Pt,SiO2- SA-Pt can efficient catalytic endocyclic alkene norbornene
With the hydrosilylation of allyl chloride.
Embodiment 25：
Three parts of 0.01mol are measured respectively to be placed in centrifuge tube along 2- hexenes, and are separately added into according to preparation method of the present invention,
Platinum it is immobilized during, the lower mechanical agitation of nitrogen protection, solvent is ethyl alcohol, and immobilized temperature is the SiO prepared at 78 DEG C2-DTPA-
(amount containing Pt is 2.8 × 10 to Pt-3Mmol), SiO2(amount containing Pt is 2.3 × 10 to-NTA-Pt-3Mmol), SiO2- SA-Pt (amounts containing Pt
For 2.9 × 10-3Mmol), after activating 30min at 60 DEG C, the allyl chloride of 0.018mol is added in, seal and adds condensation
Device, the reaction was continued 4h, after reaction, are cooled to room temperature, and take supernatant, carry out membrane filtration, GC tests.1HNMR results
The structure for demonstrating product is n-hexyl dimethyl dichlorosilane (DMCS).The results are shown in Table 4.The result shows that the method for the present invention is prepared
Three kinds of catalyst SiO2-DTPA-Pt,SiO2-NTA-Pt,SiO2- SA-Pt is not limited to end position alkene and allyl chloride
Hydrosilylation, also can efficiently be catalyzed the hydrosilylation along 2- hexenes and allyl chloride.
The catalytic effect comparison of 1 different loads platinum catalyst of table
Wherein, a, condition：1- hexenes：10.0mmol；Allyl chloride：18.0mmol；Catalyst amount：SiO2-
DTPA-Pt:2.8×10-3mmol Pt,SiO2-NTA-Pt:2.3×10-3mmol Pt,SiO2-SA-Pt:2.9×10-3mmol
Pt；Reaction temperature：60℃；Reactant addition sequence：1- hexenes are with after activation of catalyst 30min, adding in allyl chloride.
B, conversion frequency (TOF)：The calculating when reaction carries out 0.5h.
2 temperature of table is to SiO2The influence of-DTPA-Pt supported quantities and catalytic effect
Wherein, a, condition：1- hexenes：10.0mmol；Allyl chloride：18.0mmol；Catalyst amount：SiO2-
DTPA-Pt:2.8×10-3mmol Pt；Reaction temperature：60℃；Reactant addition sequence：1- hexenes and activation of catalyst 30min
Afterwards, allyl chloride is added in.
B, conversion frequency (TOF)：The calculating when reaction carries out 0.5h.
The different immobilized solvents of table 3 are to SiO2The influence of-EDTA-Pt supported quantities and catalytic effect
Wherein, a, condition：1- hexenes：10.0mmol；Allyl chloride：18.0mmol；Catalyst amount：SiO2-
DTPA-Pt:2.8×10-3mmol Pt；Reaction temperature：60℃；Reactant addition sequence：1- hexenes and activation of catalyst 30min
Afterwards, allyl chloride is added in.
B, conversion frequency (TOF)：The calculating when reaction carries out 0.5h.
The applicability of 4 three kinds of catalyst of table is investigated
Wherein, a, condition：1- heptene, 1- hexenes, 1- octenes, 1- decene, styrene, norbornene, cis- 2- hexenes：
10.0mmol；1- laurylenes, 1-tetradecylene, 1- hexadecylenes, 1- octadecylenes：5.0mmol；Allyl chloride：18.0mmol；It urges
Agent dosage：SiO2-DTPA-Pt:2.8×10-3mmol Pt,SiO2-NTA-Pt:2.3×10-3mmol Pt,SiO2-SA-Pt:
2.9×10-3mmol Pt；Reaction temperature：60℃；Reactant addition sequence：1- hexenes are with after activation of catalyst 30min, adding in first
Base dichloro hydrogen silicon.
B, conversion frequency (TOF)：The calculating when reaction carries out 0.5h.
C, product utilization1H NMR carry out structural identification.
It should be appreciated that embodiment and example discussed herein simply to illustrate that, to those skilled in the art
For, it can be improved or converted, and all these modifications and variations should all belong to the protection of appended claims of the present invention
Scope.
Claims (8)
1. silica-nitrilotriacetic acid-platinum catalyst, which is characterized in that element contained by the loaded platinum catalyst：C、H、
O, N, Si, Pt, Cl, wherein Pt are present in relatively low reduction-state in catalyst；Wherein Pt contents are 0.150mmol/g.
2. silica-nitrilotriacetic acid-platinum catalyst preparation method, which is characterized in that include the following steps：
1), the silica of functional modification activation, obtains amino bonded silica gel, is denoted as：SiO2-NH2；
2) amino bonded silica, is modified using nitrilotriacetic acid, silica-nitrilotriacetic acid is obtained, is denoted as：
SiO2-NTA；
3) it is, that platinum is immobilized to above-mentioned steps 2) in silica-nitrilotriacetic acid, obtain load platinum catalyst：
(1), compound concentration is chloroplatinic acid-aqueous isopropanol of 0.0386mol/L, by volume 1：10 measure 0.0386mol/L
Chloroplatinic acid-aqueous isopropanol and absolute ethyl alcohol be added separately to obtained solution A in four-hole bottle；
(2), above-mentioned steps 2 are weighed) made from silica-nitrilotriacetic acid be added in above-mentioned solution A, wherein, dioxy
SiClx-nitrilotriacetic acid and the mass ratio of six hydration chloroplatinic acids are 10：1, in 100 DEG C of external temperature, lead to nitrogen, condensation, machine
Tool is stirred to react 9h；
(3), after reaction, centrifuge, 3 are washed with absolute ethyl alcohol~5 times, 60 ± 1 DEG C of dry 12h are to get to load type platinum
Catalyst silica-nitrilotriacetic acid-platinum, is denoted as:SiO2-NTA-Pt。
3. preparation method according to claim 2, which is characterized in that the dioxy that functional modification activates in the step 1)
SiClx, step are as follows：
(1), weigh activated silica to be placed in there-necked flask, sequentially add toluene, 3- aminopropyl triethoxysilanes, 110 ± 1
DEG C 24 ± 1h of mechanical agitation, the molar ratio between silicone hydroxyl and 3- aminopropyl triethoxysilanes that activated silica contains are
1：1.5~2；
(2), solid product B after reaction, is obtained through separation of solid and liquid after suction filtration, washs solid product with toluene, acetone respectively
B, 70 ± 1 DEG C of forced air dryings are for 24 hours to get to aminopropyl bonded silica.
4. preparation method according to claim 2, which is characterized in that modified in the step 2) using nitrilotriacetic acid
Amino bonded silica, it is specific as follows：
(1), amino bonded silica and nitrilotriacetic acid are weighed in step 1) in there-necked flask, wherein, amino bonded two
Silica and the mass ratio of nitrilotriacetic acid are 1：1.2, ethyl alcohol, acetic acid are sequentially added, wherein, the volume ratio of ethyl alcohol and acetic acid
For 1:1,70 ± 1 DEG C of mechanic whirl-nett reaction is for 24 hours；
(2), after reaction, it is cooled to room temperature suction filtration and obtains solid product F, successively with acetone, water washing solid product F,
60 ± 1 DEG C are dried in vacuo for 24 hours, up to silica-nitrilotriacetic acid.
5. silica-nitrilotriacetic acid-platinum catalyst purposes, which is characterized in that applied to alkene and the silicon of silane containing hydrogen
Addition reaction of hydrogen.
6. purposes according to claim 5, which is characterized in that the silicon hydrogen applied to chain type alkene and dimethyl dichlorosilane (DMCS) adds
Si―H addition reaction into the hydrosilylation of reaction, cyclic olefin and dimethyl dichlorosilane (DMCS), styrene and allyl chloride is anti-
Should and the hydrosilylation of 2- hexenes and allyl chloride.
7. purposes according to claim 6, which is characterized in that it is pungent that the chain type alkene includes 1- heptene, 1- hexenes, 1-
Alkene, 1- decene, 1- laurylenes, 1-tetradecylene, 1- hexadecylenes, 1- octadecylenes.
8. purposes according to claim 6, which is characterized in that the cyclic olefin includes norbornene.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201706A (en) * | 2019-06-18 | 2019-09-06 | 仲恺农业工程学院 | Pt/NH2-MCM-41 catalyst, preparation method and application thereof |
| CN112221539A (en) * | 2020-11-17 | 2021-01-15 | 九江学院 | Catalyst for hydrosilylation reaction and preparation method and application thereof |
| CN113893873A (en) * | 2021-11-04 | 2022-01-07 | 枣阳市华威硅氟材料有限公司 | Pt @ zeolite immobilized catalyst and preparation method and application thereof |
-
2017
- 2017-12-20 CN CN201711385845.7A patent/CN108080023A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201706A (en) * | 2019-06-18 | 2019-09-06 | 仲恺农业工程学院 | Pt/NH2-MCM-41 catalyst, preparation method and application thereof |
| CN112221539A (en) * | 2020-11-17 | 2021-01-15 | 九江学院 | Catalyst for hydrosilylation reaction and preparation method and application thereof |
| CN113893873A (en) * | 2021-11-04 | 2022-01-07 | 枣阳市华威硅氟材料有限公司 | Pt @ zeolite immobilized catalyst and preparation method and application thereof |
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