JP2012012371A - 希土類金属抽出剤の合成方法 - Google Patents
希土類金属抽出剤の合成方法 Download PDFInfo
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 46
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 38
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 20
- QEVGZEDELICMKH-UHFFFAOYSA-N Diglycolic acid Chemical compound OC(=O)COCC(O)=O QEVGZEDELICMKH-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000006243 chemical reaction Methods 0.000 claims abstract description 51
- 239000002253 acid Substances 0.000 claims abstract description 41
- 239000000047 product Substances 0.000 claims abstract description 39
- 239000007806 chemical reaction intermediate Substances 0.000 claims abstract description 27
- 239000007810 chemical reaction solvent Substances 0.000 claims abstract description 25
- 125000005265 dialkylamine group Chemical group 0.000 claims abstract description 21
- 239000002798 polar solvent Substances 0.000 claims abstract description 12
- 230000035484 reaction time Effects 0.000 claims abstract description 7
- 239000012374 esterification agent Substances 0.000 claims abstract description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical group CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 45
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 17
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- QAEDZJGFFMLHHQ-UHFFFAOYSA-N trifluoroacetic anhydride Chemical compound FC(F)(F)C(=O)OC(=O)C(F)(F)F QAEDZJGFFMLHHQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 39
- 239000002184 metal Substances 0.000 abstract description 38
- 239000007795 chemical reaction product Substances 0.000 abstract description 28
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract description 24
- PIYNUZCGMLCXKJ-UHFFFAOYSA-N 1,4-dioxane-2,6-dione Chemical compound O=C1COCC(=O)O1 PIYNUZCGMLCXKJ-UHFFFAOYSA-N 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 7
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000010189 synthetic method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 67
- 238000000605 extraction Methods 0.000 description 30
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 24
- 239000000243 solution Substances 0.000 description 22
- 239000012074 organic phase Substances 0.000 description 21
- 238000005191 phase separation Methods 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- -1 nickel metal hydride Chemical class 0.000 description 17
- 238000000638 solvent extraction Methods 0.000 description 16
- 239000002904 solvent Substances 0.000 description 15
- 239000008346 aqueous phase Substances 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 238000003786 synthesis reaction Methods 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 238000001308 synthesis method Methods 0.000 description 10
- 239000012535 impurity Substances 0.000 description 9
- KOHUSHSNNOEPFN-UHFFFAOYSA-N 2-[2-(dioctylamino)-2-oxoethoxy]acetic acid Chemical compound CCCCCCCCN(C(=O)COCC(O)=O)CCCCCCCC KOHUSHSNNOEPFN-UHFFFAOYSA-N 0.000 description 8
- 229910052779 Neodymium Inorganic materials 0.000 description 8
- 229910052777 Praseodymium Inorganic materials 0.000 description 8
- SAIKULLUBZKPDA-UHFFFAOYSA-N Bis(2-ethylhexyl) amine Chemical compound CCCCC(CC)CNCC(CC)CCCC SAIKULLUBZKPDA-UHFFFAOYSA-N 0.000 description 7
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 7
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 7
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 230000009257 reactivity Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000001953 recrystallisation Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 238000005160 1H NMR spectroscopy Methods 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000010908 decantation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- ATINCSYRHURBSP-UHFFFAOYSA-K neodymium(iii) chloride Chemical compound Cl[Nd](Cl)Cl ATINCSYRHURBSP-UHFFFAOYSA-K 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- LHBNLZDGIPPZLL-UHFFFAOYSA-K praseodymium(iii) chloride Chemical compound Cl[Pr](Cl)Cl LHBNLZDGIPPZLL-UHFFFAOYSA-K 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- ZDFBXXSHBTVQMB-UHFFFAOYSA-N 2-ethylhexoxy(2-ethylhexyl)phosphinic acid Chemical compound CCCCC(CC)COP(O)(=O)CC(CC)CCCC ZDFBXXSHBTVQMB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000012024 dehydrating agents Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- CNDWHJQEGZZDTQ-UHFFFAOYSA-N 2-(2-amino-2-oxoethoxy)acetamide Chemical compound NC(=O)COCC(N)=O CNDWHJQEGZZDTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052772 Samarium Inorganic materials 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 2
- 125000003282 alkyl amino group Chemical group 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 238000000622 liquid--liquid extraction Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000000956 solid--liquid extraction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- VJLDTOPHCSPHKF-UHFFFAOYSA-N 2-(2-amino-2-oxoethoxy)-2-octyldecanoic acid Chemical compound CCCCCCCCC(C(O)=O)(OCC(N)=O)CCCCCCCC VJLDTOPHCSPHKF-UHFFFAOYSA-N 0.000 description 1
- QXCAQVWXGYSKIZ-UHFFFAOYSA-N 2-(2-amino-2-oxoethoxy)-4-ethyl-2-(2-ethylhexyl)octanoic acid Chemical compound C(C)C(CC(C(=O)O)(OCC(=O)N)CC(CCCC)CC)CCCC QXCAQVWXGYSKIZ-UHFFFAOYSA-N 0.000 description 1
- WBZVQGYKIVWFGQ-UHFFFAOYSA-N 2-(2-amino-2-oxoethoxy)acetic acid Chemical compound NC(=O)COCC(O)=O WBZVQGYKIVWFGQ-UHFFFAOYSA-N 0.000 description 1
- SIPNYJMPXHJGBH-UHFFFAOYSA-N 2-[2-[bis(2-ethylhexyl)amino]-2-oxoethoxy]acetamide Chemical compound C(COCC(=O)N)(=O)N(CC(CCCC)CC)CC(CCCC)CC SIPNYJMPXHJGBH-UHFFFAOYSA-N 0.000 description 1
- 239000004808 2-ethylhexylester Substances 0.000 description 1
- MGFUUKQPXCYIJZ-UHFFFAOYSA-N C(CCCCCCC)C(C(=O)N)(OCC(=O)O)CCCCCCCC Chemical compound C(CCCCCCC)C(C(=O)N)(OCC(=O)O)CCCCCCCC MGFUUKQPXCYIJZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- RGZVRADFLSQOLD-UHFFFAOYSA-N bis(2,4,4-trimethylpentyl) hydrogen phosphate Chemical compound CC(C)(C)CC(C)COP(O)(=O)OCC(C)CC(C)(C)C RGZVRADFLSQOLD-UHFFFAOYSA-N 0.000 description 1
- QUXFOKCUIZCKGS-UHFFFAOYSA-N bis(2,4,4-trimethylpentyl)phosphinic acid Chemical compound CC(C)(C)CC(C)CP(O)(=O)CC(C)CC(C)(C)C QUXFOKCUIZCKGS-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- LAWOZCWGWDVVSG-UHFFFAOYSA-N dioctylamine Chemical compound CCCCCCCCNCCCCCCCC LAWOZCWGWDVVSG-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- HCIQUGMKXQZZMG-UHFFFAOYSA-N ethyl hexyl hydrogen phosphate Chemical compound CCCCCCOP(O)(=O)OCC HCIQUGMKXQZZMG-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229960004838 phosphoric acid Drugs 0.000 description 1
- 239000003586 protic polar solvent Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
- C07C271/10—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C271/12—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
- C07C235/02—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C235/04—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C235/06—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B47/00—Obtaining manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
【効果】軽希土類元素の分離に優れたジアルキルジグリコール酸を、高価な無水ジグリコール酸及び有害なジクロロメタンを用いることなく、低コストで、効率よく、かつ高収率で合成できるため、工業的利用価値が高い。
【選択図】なし
Description
請求項1:
下記一般式(1)
で表されるジアルキルジグリコールアミド酸を抽出剤成分とする希土類金属抽出剤を合成する方法であって、
ジグリコール酸Xmolを、エステル化剤Ymol中、モル比Y/Xを2.5以上とし、反応温度70℃以上で、反応時間1時間以上で反応させ、その後、減圧濃縮することで、未反応物及び反応残分を除去して反応中間生成物を得、
更に、前記反応中間生成物に、反応溶媒として、非プロトン性極性溶媒を加え、前記反応中間生成物とジアルキルアミンZmolとを、モル比Z/Xを0.9以上として反応させ、
前記非プロトン性極性溶媒を除去することを特徴とする希土類金属抽出剤の合成方法。
請求項2:
前記エステル化剤が、無水酢酸及び無水トリフルオロ酢酸から選ばれることを特徴とする請求項1記載の希土類金属抽出剤の合成方法。
請求項3:
前記非プロトン性極性溶媒が、アセトン、アセトニトリル、テトラヒドロフラン、N,N−ジメチルホルムアミド、ジメチルスルホキシドから選ばれることを特徴とする請求項1又は2記載の希土類金属抽出剤の合成方法。
請求項4:
ジグリコール酸とエステル化剤との反応において、モル比Y/Xが、2.5≦Y/X≦6.5の範囲であることを特徴とする請求項1乃至3のいずれか1項記載の希土類金属抽出剤の合成方法。
請求項5:
前記ジグリコール酸とエステル化剤との反応中間生成物と、ジアルキルアミンとの反応において、モル比Z/Xが、0.9≦Z/X≦1.2の範囲であることを特徴とする請求項1乃至4のいずれか1項記載の希土類金属抽出剤の合成方法。
ジグリコール酸27g(0.20mol)、無水酢酸130g(1.27mol)の混合溶液を4時間加熱還流し、その後、過剰の無水酢酸及び反応で生成した酢酸を減圧除去した。得られた濃縮物(反応中間生成物)にテトラヒドロフラン150gを加え、次いで、ジ(2−エチルヘキシル)アミン48g(0.20mol)を滴下し、室温で2時間攪拌し、その後、減圧濃縮を行い反応溶媒のテトラヒドロフランを除去することで、反応生成物70gの淡黄色液体を得た(実施例1)。反応式を下記に示す。
ジグリコール酸40g(0.3mol)、無水酢酸180g(1.76mol)の混合溶液を4時間加熱還流し、その後、過剰の無水酢酸及び反応で生成した酢酸を減圧除去した。得られた濃縮物(反応中間生成物)にアセトン200gを加え、次いで、ジオクチルアミン72.5g(0.3mol)を滴下し、室温で2時間攪拌し、その後、減圧濃縮を行い反応溶媒のアセトンを除去することで、反応生成物の白色固体を得た(実施例2)。
ジグリコール酸13.4g(0.1mol)、無水酢酸60g(0.59mol)の混合溶液を、下記表3で示される条件にて加熱還流し、その後、過剰の無水酢酸及び反応で生成した酢酸を減圧除去した。得られた濃縮物(反応中間生成物)にアセトン200gを加え、次いで、ジ(2−エチルヘキシル)アミン24.1g(0.1mol)を滴下し、室温で2時間攪拌し、その後、減圧濃縮を行い反応溶媒のアセトンを除去することで、反応生成物の淡黄色液体を得た。
下記表4中、Xで示される量のジグリコール酸と、下記表4中、Yで示される量の無水酢酸の混合溶液を4時間加熱還流し、その後、過剰の無水酢酸及び反応で生成した酢酸を減圧除去した。得られた濃縮物(反応中間生成物)にTHF400gを加え、次いで、下記表4中、Zで示される量のジ(2−エチルヘキシル)アミンを滴下し、室温で2時間攪拌し、その後、減圧濃縮を行い反応溶媒のTHFを除去することで、反応生成物の淡黄色液体を得た。用いたジグリコール酸の量(Xmol)と、エステル化剤である無水酢酸の量(Ymol)との比であるY/X、及びジグリコール酸の量(Xmol)とジ(2−エチルヘキシル)アミンの量(Zmol)との比であるZ/Xは、表4に示すとおりである。
Claims (5)
- 下記一般式(1)
で表されるジアルキルジグリコールアミド酸を抽出剤成分とする希土類金属抽出剤を合成する方法であって、
ジグリコール酸Xmolを、エステル化剤Ymol中、モル比Y/Xを2.5以上とし、反応温度70℃以上で、反応時間1時間以上で反応させ、その後、減圧濃縮することで、未反応物及び反応残分を除去して反応中間生成物を得、
更に、前記反応中間生成物に、反応溶媒として、非プロトン性極性溶媒を加え、前記反応中間生成物とジアルキルアミンZmolとを、モル比Z/Xを0.9以上として反応させ、
前記非プロトン性極性溶媒を除去することを特徴とする希土類金属抽出剤の合成方法。 - 前記エステル化剤が、無水酢酸及び無水トリフルオロ酢酸から選ばれることを特徴とする請求項1記載の希土類金属抽出剤の合成方法。
- 前記非プロトン性極性溶媒が、アセトン、アセトニトリル、テトラヒドロフラン、N,N−ジメチルホルムアミド、ジメチルスルホキシドから選ばれることを特徴とする請求項1又は2記載の希土類金属抽出剤の合成方法。
- ジグリコール酸とエステル化剤との反応において、モル比Y/Xが、2.5≦Y/X≦6.5の範囲であることを特徴とする請求項1乃至3のいずれか1項記載の希土類金属抽出剤の合成方法。
- 前記ジグリコール酸とエステル化剤との反応中間生成物と、ジアルキルアミンとの反応において、モル比Z/Xが、0.9≦Z/X≦1.2の範囲であることを特徴とする請求項1乃至4のいずれか1項記載の希土類金属抽出剤の合成方法。
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