CN107008360A - 臭氧非均相氧化固体催化剂的制备方法 - Google Patents
臭氧非均相氧化固体催化剂的制备方法 Download PDFInfo
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- CN107008360A CN107008360A CN201710274757.3A CN201710274757A CN107008360A CN 107008360 A CN107008360 A CN 107008360A CN 201710274757 A CN201710274757 A CN 201710274757A CN 107008360 A CN107008360 A CN 107008360A
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 230000003647 oxidation Effects 0.000 title claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 27
- 239000011949 solid catalyst Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims abstract description 48
- -1 β hydroxyethyl Chemical group 0.000 claims abstract description 29
- 230000003197 catalytic effect Effects 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 17
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 16
- LWXVCCOAQYNXNX-UHFFFAOYSA-N lithium hypochlorite Chemical compound [Li+].Cl[O-] LWXVCCOAQYNXNX-UHFFFAOYSA-N 0.000 claims abstract description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 11
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 claims abstract description 10
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 9
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 9
- 239000010459 dolomite Substances 0.000 claims abstract description 9
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims abstract description 9
- 235000011151 potassium sulphates Nutrition 0.000 claims abstract description 9
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- XCJXQCUJXDUNDN-UHFFFAOYSA-N chlordene Chemical compound C12C=CCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl XCJXQCUJXDUNDN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 8
- 239000010941 cobalt Substances 0.000 claims abstract description 8
- 125000004494 ethyl ester group Chemical group 0.000 claims abstract description 8
- 229910052741 iridium Inorganic materials 0.000 claims abstract description 8
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052939 potassium sulfate Inorganic materials 0.000 claims abstract description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 8
- 229910021538 borax Inorganic materials 0.000 claims abstract description 7
- 239000010970 precious metal Substances 0.000 claims abstract description 7
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 7
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 claims abstract description 6
- RKKHMLBQJFPHDF-UHFFFAOYSA-N [Os].[K].[K] Chemical compound [Os].[K].[K] RKKHMLBQJFPHDF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 6
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 5
- KIWBPDUYBMNFTB-UHFFFAOYSA-N Ethyl hydrogen sulfate Chemical compound CCOS(O)(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 5
- 238000001354 calcination Methods 0.000 claims abstract description 5
- 229940009662 edetate Drugs 0.000 claims abstract description 5
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 5
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229930195712 glutamate Natural products 0.000 claims abstract description 5
- 229910052773 Promethium Inorganic materials 0.000 claims abstract description 4
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- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000007795 chemical reaction product Substances 0.000 claims abstract 2
- 239000007864 aqueous solution Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000008367 deionised water Substances 0.000 claims description 12
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- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
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- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims 1
- RGHNJXZEOKUKBD-SQOUGZDYSA-N Gluconic acid Natural products OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims 1
- ZDHDJBQWTWIFLR-UHFFFAOYSA-N dodecyl sulfate;methylazanium Chemical compound [NH3+]C.CCCCCCCCCCCCOS([O-])(=O)=O ZDHDJBQWTWIFLR-UHFFFAOYSA-N 0.000 claims 1
- 239000000174 gluconic acid Substances 0.000 claims 1
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- 239000003054 catalyst Substances 0.000 abstract description 17
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- 230000000694 effects Effects 0.000 abstract description 7
- 238000001994 activation Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 229940063953 ammonium lauryl sulfate Drugs 0.000 abstract description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 abstract description 2
- BTBJBAZGXNKLQC-UHFFFAOYSA-N ammonium lauryl sulfate Chemical compound [NH4+].CCCCCCCCCCCCOS([O-])(=O)=O BTBJBAZGXNKLQC-UHFFFAOYSA-N 0.000 abstract 1
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 229910001868 water Inorganic materials 0.000 description 7
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 6
- 235000011130 ammonium sulphate Nutrition 0.000 description 6
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- 150000002910 rare earth metals Chemical class 0.000 description 5
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- 239000007787 solid Substances 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- JZMJDSHXVKJFKW-UHFFFAOYSA-M methyl sulfate(1-) Chemical compound COS([O-])(=O)=O JZMJDSHXVKJFKW-UHFFFAOYSA-M 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OTBXWNIALCJHJT-UHFFFAOYSA-N CCCCCCCCCCCCCCCCC(C)COS(O)(=O)=O Chemical compound CCCCCCCCCCCCCCCCC(C)COS(O)(=O)=O OTBXWNIALCJHJT-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- KNFUDJRDHMKNRO-UHFFFAOYSA-N acetic acid;terbium Chemical compound [Tb].CC(O)=O KNFUDJRDHMKNRO-UHFFFAOYSA-N 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 238000001816 cooling Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- KCIDZIIHRGYJAE-YGFYJFDDSA-L dipotassium;[(2r,3r,4s,5r,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] phosphate Chemical compound [K+].[K+].OC[C@H]1O[C@H](OP([O-])([O-])=O)[C@H](O)[C@@H](O)[C@H]1O KCIDZIIHRGYJAE-YGFYJFDDSA-L 0.000 description 2
- 229940048820 edetates Drugs 0.000 description 2
- 150000002306 glutamic acid derivatives Chemical class 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000007210 heterogeneous catalysis Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000006385 ozonation reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- WYRSGXAIHNMKOL-UHFFFAOYSA-N $l^{1}-sulfanylethane Chemical compound CC[S] WYRSGXAIHNMKOL-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- BAVYZALUXZFZLV-UHFFFAOYSA-O Methylammonium ion Chemical compound [NH3+]C BAVYZALUXZFZLV-UHFFFAOYSA-O 0.000 description 1
- 229910004835 Na2B4O7 Inorganic materials 0.000 description 1
- HVWGGPRWKSHASF-UHFFFAOYSA-N Sulfuric acid, monooctadecyl ester Chemical compound CCCCCCCCCCCCCCCCCCOS(O)(=O)=O HVWGGPRWKSHASF-UHFFFAOYSA-N 0.000 description 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Substances CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
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- 125000002524 organometallic group Chemical group 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
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- 239000000376 reactant Substances 0.000 description 1
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- 238000003746 solid phase reaction Methods 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
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- PWWGCBMGIAPMHQ-UHFFFAOYSA-N thulium(3+) Chemical compound [Tm+3] PWWGCBMGIAPMHQ-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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- B01J23/894—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
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Abstract
本发明涉及一种臭氧非均相氧化固体催化剂的制备方法,属环保和化工催化剂技术领域。该制备方法是用活性炭、光卤石、白云石、方解石、玄武岩和白钠镁矾多孔材料作载体,载体经次氯酸锂和双(乙酰丙酮)铍扩孔改性后,加入表面活性剂β‑羟乙基二甲基十二烷基硫酸铵在超声波作用下进行表面活化处理,然后超声表面活化载体在水热反应釜中与复合矿化剂硼砂和硫酸钾,催化活性助剂前驱物三环戊二烯钷、三(2,2,6,6‑四甲基‑3,5‑庚二酮酸)钆、水合三醋酸铽、三氟甲烷磺酸铥(III)稀土金属有机化合物,催化活性中心组分前驱物普通过渡金属有机化合物葡萄糖酸钴、谷氨酸铜和贵金属化合物六氯锇二钾、四氯二水合铱,在乳化剂二甲基十六烷基乙基硫酸乙酯铵作用下进行水热反应,反应产物烘干除去水分后,在马弗炉内,一定温度下灼烧得到臭氧非均相氧化固体催化剂。
Description
技术领域
本发明涉及一种臭氧非均相氧化固体催化剂的制备方法,属环保和化工催化剂技术领域。
背景技术
臭氧氧化技术利用臭氧氧化能力强的特点,能将许多有机污染物氧化分解,广泛用于废水处理。臭氧催化氧化技术分为臭氧均相催化氧化和臭氧非均相催化氧化,臭氧均相催化氧化存在催化剂较难分离回收重复使用、臭氧利用率低导致水处理运行成本较高,同时有机污染物去除率较低和易造成水体二次污染使其应用受到局限;臭氧非均相催化氧化技术具有催化剂易于分离回收并可重复使用、臭氧利用率高、有机污染物去除率较高,降低了水处理运行成本和不会造成二次污染等优点使其应用受到广泛关注。臭氧非均相催化氧化有机物分解是经过催化剂表面吸附有机物达到局部有机物富集,同时臭氧分子吸附在催化剂表面在催化剂作用下产生高活性的羟基自由基使有机物分解。臭氧非均相催化氧化处理废水技术中,核心技术是臭氧非均相氧化固体催化剂的制备。
臭氧非均相氧化固体催化剂通常由载体、活性中心和助剂组成。由于废水中污染物种类繁多、化学成分复杂的特征,会对催化剂的使用性能如吸附、抗毒性产生不良影响。目前制备臭氧非均相氧化固体催化剂使用的载体结构较单一,吸附性较低;活性中心普遍采用普通过渡金属盐,抗毒性较差;制备方法主要有浸渍法、沉淀法、混合法及溶胶凝胶等方法附着活性中心和助剂组分于载体表面,活性中心和助剂组分容易熔析出,导致催化剂容易失去催化活性。针对目前臭氧非均相氧化固体催化剂制备方法中存在催化剂吸附性较低、抗毒性较差和容易失去催化活性问题,开发采用多组分多孔载体经扩孔、表面活化增强催化剂的吸附性,使用稀土金属有机化合物作催化活性助剂前驱物、普通过渡金属有机化合物和贵金属化合物作催化活性中心前驱物与多组分多孔载体经水热反应、高温灼烧制备含多元金属的臭氧非均相氧化固体催化剂以提高催化剂抗毒性和催化活性的制备方法,具有较大的环境效益和较高的实用价值。
发明内容
针对目前臭氧非均相氧化固体催化剂制备方法中存在催化剂吸附性较低、抗毒性较差和容易失去催化活性问题,开发采用多组分多孔载体经扩孔、表面活化增强催化剂的吸附性,使用稀土金属有机化合物作催化活性助剂前驱物、普通过渡金属有机化合物和贵金属化合物作催化活性中心前驱物与多组分多孔载体经水热反应、高温灼烧制备含多元金属的臭氧非均相氧化固体催化剂以提高催化剂抗毒性和催化活性的制备方法,其特征是在可密闭反应器中加入A组分和去离子水搅拌制备水溶液,控制A组分的重量浓度为2%~6%,溶液制备完成后,在搅拌下加入B组分,升温至35℃~50℃,继续搅拌反应3h~6h,过滤,反应产物在102℃~106℃干燥恒重后得到扩孔改性载体;扩孔改性载体投入超声波反应器,加入由C组分和去离子水配制的水溶液,C组分的重量浓度为3%~8%,搅拌混合均匀,控制超声功率密度为0.3~0.8W/m3、频率20kHz~30kHz、40℃~55℃,超声振荡2h~5h,得到超声表面活化载体混合液;超声表面活化载体混合液转移至水热反应釜中,再加入D组分和去离子水配制的水溶液,D组分的重量浓度为40%~55%,按重量计,D组分去离子水溶液:超声表面活化载体混合液的重量比=1:(1.5~2),控制温度120℃~180℃,水热反应时间为8h~16h,然后烘干得细颗粒物;细颗粒物在马弗炉内,600℃~950℃,灼烧3h~8h,得到臭氧非均相氧化固体催化剂。所述A组分由次氯酸锂、双(乙酰丙酮)铍组成,按重量计,次氯酸锂:双(乙酰丙酮)铍的重量之比=1:(1~1.6),B组分由活性炭、光卤石、白云石、方解石、玄武岩、白钠镁矾组成,按重量计,活性炭:光卤石:白云石:方解石: 玄武岩 :白钠镁矾的重量之比=(5~15):(7~17):(9~19):(11~21):(13~23):(15~25),按重量计,A组分:B组分的重量之比=1:(10~20),C组分是β-羟乙基二甲基十二烷基硫酸铵,按重量计,C组分:扩孔改性载体的重量之比=1:(5~10),D组分由复合矿化剂硼砂、硫酸钾,催化活性助剂前驱物三环戊二烯钷、三(2,2,6,6-四甲基-3,5-庚二酮酸)钆、水合三醋酸铽、三氟甲烷磺酸铥(III)稀土金属有机化合物,催化活性中心前驱物普通过渡金属有机化合物葡萄糖酸钴、谷氨酸铜和贵金属化合物六氯锇二钾、四氯二水合铱,乳化剂二甲基十六烷基乙基硫酸乙酯铵组成,按重量计,硼砂:硫酸钾:三环戊二烯钷:三(2,2,6,6-四甲基-3,5-庚二酮酸)钆:水合三醋酸铽:三氟甲烷磺酸铥(III):葡萄糖酸钴:谷氨酸铜:六氯锇二钾:四氯二水合铱:二甲基十六烷基乙基硫酸乙酯铵的重量之比=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20)。所述B组分的活性炭、光卤石、白云石、方解石、玄武岩 、白钠镁矾分别进行粉碎,去离子水洗涤干燥除去水分后,经标准筛进行-200目、+400目筛分,控制粒径为0.0370mm~0.0750 mm。
本发明的技术方法是这样实现的:在可密闭反应器中加入次氯酸锂LiClO、双(乙酰丙酮)铍C10H14BeO4和去离子水搅拌制备水溶液,加入筛分后粒径为0.0370mm~0.0750mm的活性炭、光卤石、白云石、方解石、玄武岩 和白钠镁矾多孔材料载体,在一定温度和搅拌条件下,水溶液中离子半径小的Be2+(0.31Å)、Li+(0.60Å)置换出多孔材料中部分离子半径大的Ca2+(0.99Å)、K+(1.33Å)、Ba2+(1.35Å)等离子,多孔材料载体的孔径变大、表面粗糙度增加,过滤,干燥恒重后的扩孔改性载体投入超声波反应器,再加入β-羟乙基二甲基十二烷基硫酸铵[C12H25N(CH3)2CH2CH2OH]+CH3SO4 -水溶液,控制超声功率密度、超声波频率、温度和超声振荡时间,在超声波空化作用下,β-羟乙基二甲基十二烷基硫酸铵[C12H25N(CH3)2CH2CH2OH]+CH3SO4 -易于从水溶液逸出进入扩孔改性载体孔道或附着在扩孔改性载体表面,有益于载体孔道的相互连通和载体表面活化,增强了吸附性;超声活化完成后,超声表面活化载体混合液转移至水热反应釜中,与硼砂Na2B4O7·10H2O、硫酸钾K2SO4复合矿化剂,催化活性助剂前驱物三环戊二烯钷Pm(C5H5)3、三(2,2,6,6-四甲基-3,5-庚二酮酸)钆C33H57GdO6、水合三醋酸铽C6H11O7Tb、三氟甲烷磺酸铥(III)C3F9O9S3Tm稀土金属有机化合物,催化活性中心组分前驱物普通过渡金属有机化合物葡萄糖酸钴C12H22O14Co、谷氨酸铜C5H7NO4Cu和六氯锇二钾K2OsCl6、四氯二水合铱Ir(H2O)2Cl4贵金属化合物,在乳化剂二甲基十六烷基乙基硫酸乙酯铵[C16H33N(CH3)2C2H5]+C2H5SO4 -用下进行水热反应,矿化剂加速扩散作用、使反应物晶格活化,促进了固相反应的进行,超声表面活化载体与稀土金属有机化合物、普通过渡金属有机化合物、贵金属化合物均匀掺杂,乳化剂二甲基十六烷基乙基硫酸乙酯铵使反应液形成准稳态的乳液防止了固液分离、沉降,同时对多孔载体进一步表面活化,通过在一定温度、时间的水热反应,烘干得到均匀掺杂的细粉粒物;均匀掺杂的细粉粒物在马弗炉内,经高温灼烧,其中的有机物完全碳化进一步强化了多孔载体的微孔结构,得到多孔载体负载稀土金属氧化物、过渡金属氧化物和贵金属形成的催化活性中心的臭氧非均相氧化固体催化剂,提高了催化剂的抗毒性和催化活性。
相对于现有技术方法,本发明突出特点是制备技术中使用活性炭、光卤石、白云石、方解石、玄武岩 、白钠镁矾多孔材料作载体,由于次氯酸锂LiClO和双(乙酰丙酮)铍C10H14BeO4的扩孔效应,β-羟乙基二甲基十二烷基硫酸铵[C12H25N(CH3)2CH2CH2OH]+CH3SO4 -、二甲基十六烷基乙基硫酸乙酯铵[C16H33N(CH3)2C2H5]+C2H5SO4 -对孔道的相互连通和表面活化作用;通过水热反应使稀土金属有机化合物、普通过渡金属有机化合物和贵金属化合物达到均匀掺杂并附着于载体表面和孔道内,高温灼烧使有机物完全碳化强化和形成了多层次的微孔结构,多孔载体负载稀土金属氧化物、过渡金属氧化物和贵金属形成的多元金属催化活性中心与多孔载体结合更加牢固,制备的臭氧非均相氧化固体催化剂具有更强的吸附性,多元金属的协同效应、特别是掺杂的贵金属具有稳定性和高活性,可以抑制金属催化活性组分的熔析出,提高了催化剂的抗毒性和催化活性,具有良好的环境效益和经济效益。
具体实施方式
实施例1:1.35g次氯酸锂,1.65g双(乙酰丙酮)铍,140ml去离子水,加入到容积为500ml的可密闭反应器中搅拌混合均匀,该水溶液的重量浓度为2.1%,次氯酸锂:双(乙酰丙酮)铍的重量之比=1:1.2;加入去离子水洗涤至中性、103℃干燥除去水分后过筛-200目~+400目标准筛的2.75g活性炭、3.75g光卤石、4.75g白云石、5.75g方解石、6.75g玄武岩 、7.75g白钠镁矾,次氯酸锂和双(乙酰丙酮)铍的重量(3g):多孔材料的重量(31.5g)=1:10.5,升温至36℃,继续搅拌反应3.2h,过滤,103℃干燥恒重后得到扩孔改性载体31g;在500ml超声波反应器中,投入扩孔改性载体31g,再加入3.25gβ-羟乙基二甲基十二烷基硫酸铵溶于100ml去离子水的水溶液,该水溶液的重量浓度为3.1%,搅拌混合均匀,β-羟乙基二甲基十二烷基硫酸铵(3.25g):扩孔改性载体(31g )=1:9.5;控制超声功率密度为0.4 W/m3、超声波频率21kHz、温度41℃,超声振荡2.2h;超声活化完成后,把超声波反应器中的超声表面活化载体混合液转移至500ml水热反应釜中,再加入由2.1g硼砂、3.05g硫酸钾、1.6g三环戊二烯钷、2.05g三(2,2,6,6-四甲基-3,5-庚二酮酸)钆、2.6g水合三醋酸铽、3.05g三氟甲烷磺酸铥(III)、5.05g葡萄糖酸钴、6.1g谷氨酸铜、2.05g 六氯锇二钾、3.1g四氯二水合铱、3.05g二甲基十六烷基乙基硫酸乙酯铵和50ml去离子水配制的水溶液,该水溶液的重量浓度为40.3%,该水溶液的重量:超声表面活化载体混合液的重量=83.8g:134.25g =1:1.6,控制温度125℃,水热反应时间为8.3h,然后105℃烘干得细粉粒物;细粉粒物在马弗炉内,620℃,灼烧3.2h,降温冷却后,可得到细粉颗粒状的臭氧非均相氧化固体催化剂。
实施例2: 0.24g次氯酸锂,0.36g双(乙酰丙酮)铍,10ml去离子水,加入到容积为100ml的可密闭反应器中搅拌混合均匀,该水溶液的重量浓度为5.7%,次氯酸锂:双(乙酰丙酮)铍的重量之比=1:1.5;加入去离子水洗涤至中性、103℃干燥除去水分后过筛-200目~+400目标准筛的1.45g活性炭、1.65g光卤石、1.85g白云石、2.05g方解石、2.25g玄武岩 、2.45g白钠镁矾,次氯酸锂和双(乙酰丙酮)铍的重量(0.6g):多孔材料的重量(11.7g)=1:19.5,升温至48℃,继续搅拌反应5.8h,过滤,105℃干燥恒重后得到扩孔改性载体11.5g;在100ml超声波反应器中,投入扩孔改性载体11.5g,再加入2.2gβ-羟乙基二甲基十二烷基硫酸铵溶于26ml去离子水的水溶液,该水溶液的重量浓度为7.8%,搅拌混合均匀,β-羟乙基二甲基十二烷基硫酸铵(2.2g):扩孔改性载体(11.5g )=1:5.2;控制超声功率密度为0.7 W/m3、超声波频率29kHz、温度54℃,超声振荡4.7h;超声活化完成后,把超声波反应器中的超声表面活化载体混合液转移至100ml水热反应釜中,再加入由0.78g硼砂、0.97g硫酸钾、0.58g三环戊二烯钷、0.67g三(2,2,6,6-四甲基-3,5-庚二酮酸)钆、0.78g水合三醋酸铽、0.87g三氟甲烷磺酸铥(III)、1.48g葡萄糖酸钴、1.77g谷氨酸铜、0.68g 六氯锇二钾、0.87g四氯二水合铱、1.98g二甲基十六烷基乙基硫酸乙酯铵和10ml去离子水配制的水溶液,该水溶液的重量浓度为53.3%,该水溶液的重量:超声表面活化载体混合液的重量=21.43g:39.7g =1:1.9,控制温度175℃,水热反应时间为15.5h,然后105℃烘干得细粉粒物;细粉粒物在马弗炉内,930℃,灼烧7.5h,降温冷却后,可得到细粉颗粒状的臭氧非均相氧化固体催化剂。
比较例1: 制备过程不加次氯酸锂、双(乙酰丙酮)铍、Β-羟乙基二甲基十二烷基硫酸铵、二甲基十六烷基乙基硫酸乙酯铵、硼砂和硫酸钾外,整个制备过程、制备条件和实施例1完全相同。
实施例1、实施例2和比较例1制备的臭氧非均相氧化固体催化剂的参数列入表1。
表1实施例和比较例制备臭氧非均相氧化固体催化剂参数
项目 | 平均孔径(nm) | 孔体积(cm3/g) | BET比表面(m2/g) |
实施例1 | 4.816 | 0.6295 | 740.01 |
实施例2 | 4.358 | 0.5869 | 614.90 |
比较例1 | 2.719 | 0.3760 | 430.54 |
Claims (2)
1.一种臭氧非均相氧化固体催化剂的制备方法,其特征是在可密闭反应器中加入A组分和去离子水搅拌制备水溶液,控制A组分的重量浓度为2%~6%,溶液制备完成后,在搅拌下加入B组分,升温至35℃~50℃,继续搅拌反应3h~6h,过滤,反应产物在102℃~106℃干燥恒重后得到扩孔改性载体,扩孔改性载体投入超声波反应器,加入由C组分和去离子水配制的水溶液,C组分的重量浓度为3%~8%,搅拌混合均匀,控制超声功率密度为0.3~0.8W/m3、频率20kHz~30kHz、40℃~55℃,超声振荡2h~5h,得到超声表面活化载体混合液,转移至水热反应釜中,再加入D组分和去离子水配制的水溶液,D组分的重量浓度为40%~55%,按重量计,D组分去离子水溶液:超声表面活化载体混合液的重量比=1:(1.5~2),控制温度120℃~180℃,水热反应时间为8h~16h,然后烘干得细粉粒物,细粉粒物在马弗炉内,600℃~950℃,灼烧3h~8h,得到臭氧非均相氧化固体催化剂;所述A组分由扩孔剂次氯酸锂、双(乙酰丙酮)铍组成,按重量计,次氯酸锂:双(乙酰丙酮)铍的重量之比=1:(1~1.6),B组分由活性炭、光卤石、白云石、方解石、玄武岩 、白钠镁矾组成,按重量计,活性炭:光卤石:白云石:方解石: 玄武岩 :白钠镁矾的重量之比=(5~15):(7~17):(9~19):(11~21):(13~23):(15~25),按重量计,A组分:B组分的重量之比=1:(10~20),C组分是β-羟乙基二甲基十二烷基硫酸铵,按重量计,C组分:扩孔改性载体的重量之比=1:(5~10),D组分由复合矿化剂硼砂、硫酸钾,催化活性助剂前驱物三环戊二烯钷、三(2,2,6,6-四甲基-3,5-庚二酮酸)钆、水合三醋酸铽、三氟甲烷磺酸铥(III)稀土金属有机化合物,催化活性中心前驱物普通过渡金属有机化合物葡萄糖酸钴、谷氨酸铜和贵金属化合物六氯锇二钾、四氯二水合铱,乳化剂二甲基十六烷基乙基硫酸乙酯铵组成,按重量计,硼砂:硫酸钾:三环戊二烯钷:三(2,2,6,6-四甲基-3,5-庚二酮酸)钆:水合三醋酸铽:三氟甲烷磺酸铥(III):葡萄糖酸钴:谷氨酸铜:六氯锇二钾:四氯二水合铱:二甲基十六烷基乙基硫酸乙酯铵的重量之比=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20)。
2. 根据权利要求1所述B组分由活性炭、光卤石、白云石、方解石、玄武岩 、白钠镁矾组成,活性炭、光卤石、白云石、方解石、玄武岩 、白钠镁矾分别进行粉碎,去离子水洗涤干燥除去水分后,经标准筛进行筛分,控制粒径为0.0370mm~0.0750mm。
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