FI119046B - Katalyt för avhalogenisering av alfahalogenerade karboxylsyror, samt användning av den för rening monoklorätiksyra - Google Patents
Katalyt för avhalogenisering av alfahalogenerade karboxylsyror, samt användning av den för rening monoklorätiksyra Download PDFInfo
- Publication number
- FI119046B FI119046B FI930713A FI930713A FI119046B FI 119046 B FI119046 B FI 119046B FI 930713 A FI930713 A FI 930713A FI 930713 A FI930713 A FI 930713A FI 119046 B FI119046 B FI 119046B
- Authority
- FI
- Finland
- Prior art keywords
- catalyst
- acid
- acids
- purification
- alpha
- Prior art date
Links
- 150000001735 carboxylic acids Chemical class 0.000 title claims description 8
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 title description 19
- 238000000746 purification Methods 0.000 title description 11
- 230000003197 catalytic effect Effects 0.000 title 1
- 239000003054 catalyst Substances 0.000 claims description 43
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 26
- 239000002253 acid Substances 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 150000007513 acids Chemical class 0.000 claims description 14
- 229910052763 palladium Inorganic materials 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052794 bromium Inorganic materials 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 235000015895 biscuits Nutrition 0.000 claims 2
- 238000005695 dehalogenation reaction Methods 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 17
- 229960005215 dichloroacetic acid Drugs 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- 150000001299 aldehydes Chemical class 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000002367 halogens Chemical class 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 4
- 241000534944 Thia Species 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 230000026030 halogenation Effects 0.000 description 3
- 238000005658 halogenation reaction Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 229940106681 chloroacetic acid Drugs 0.000 description 2
- 238000010511 deprotection reaction Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000011863 silicon-based powder Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- LQFWLHZPMSHIRE-UHFFFAOYSA-N 2-chloroacetic acid;2-hydroxyacetic acid Chemical compound OCC(O)=O.OC(=O)CCl LQFWLHZPMSHIRE-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- -1 high surface carbon Chemical compound 0.000 description 1
- ORTFAQDWJHRMNX-UHFFFAOYSA-N hydroxidooxidocarbon(.) Chemical compound O[C]=O ORTFAQDWJHRMNX-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- KINULKKPVJYRON-PVNXHVEDSA-N n-[(e)-[10-[(e)-(4,5-dihydro-1h-imidazol-2-ylhydrazinylidene)methyl]anthracen-9-yl]methylideneamino]-4,5-dihydro-1h-imidazol-2-amine;hydron;dichloride Chemical compound Cl.Cl.N1CCN=C1N\N=C\C(C1=CC=CC=C11)=C(C=CC=C2)C2=C1\C=N\NC1=NCCN1 KINULKKPVJYRON-PVNXHVEDSA-N 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 208000007442 rickets Diseases 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000012808 vapor phase Substances 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
- C07C51/377—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Claims (7)
1. Katalysator, som bestär av en bärare av aktivt koi i form av cylindriska partiklar, kännetecknacl av att minst 85 5 vikt-% av hela katalysatorns partiklar har en diameter mellan 0,3-1,5 mm och en längd mellan 0,3-5 mm, varvid partiklarna innehäller en ädelmetall frän grupp 8 i det periodiska systemet. 10
2. Ämne enligt patentkrav 1, käxmetecknat av att ädelmetallen Sr palladium.
3. Ämne enligt patentkrav 1 eller 2, kännetecknat av att, att partiklarnas diameter är 0,7-1,2 mm. 15
4. Förfarande för dehalogenering av ·-halogenerade karboxylsyror eller deras estrar med väte, kännetecknat av att man opererar i närvaro av en katalysator enligt patentkraven 1-3. 20 ...
5. Förfarande enligt patentkrav 4, kännetecknat av att • · Φ • \ syrorna har formeln RjCHXCOOH, där X representerar klor eller M» · brom, R, representerar klor, brom, H eller en rak eller ·· 1 i ’** förgrenad alkylradikal med 1-12 kolatomer eller en ·«· *...125 cykloalkylradikal med 3-13 kolatomer. ·· · • · · • a • « ··1 V 1
6. Förfarande enligt patentkrav 4 eller 5, kännetecknat av att syrorna är i vätskefas. « m • · e • 1 i ♦ · ··· *...130
7. Förfarande enligt nSgot av patentkraven 4-6, käxmetecknat av att man Sven anvSnder en katalysator med ···1 ,···. större storlek i serie. • · • · « * * · · • · « ··· i t • · • »I • 1
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9201876 | 1992-02-19 | ||
FR9201876 | 1992-02-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI930713A0 FI930713A0 (fi) | 1993-02-18 |
FI930713A FI930713A (fi) | 1993-08-20 |
FI119046B true FI119046B (sv) | 2008-07-15 |
Family
ID=9426794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI930713A FI119046B (sv) | 1992-02-19 | 1993-02-18 | Katalyt för avhalogenisering av alfahalogenerade karboxylsyror, samt användning av den för rening monoklorätiksyra |
Country Status (9)
Country | Link |
---|---|
US (2) | US5414116A (sv) |
EP (1) | EP0557169B1 (sv) |
JP (1) | JPH088990B2 (sv) |
KR (1) | KR960016684B1 (sv) |
CN (1) | CN1042199C (sv) |
CA (1) | CA2089850C (sv) |
DE (1) | DE69306826T2 (sv) |
ES (1) | ES2095589T3 (sv) |
FI (1) | FI119046B (sv) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100341179C (zh) * | 2004-08-17 | 2007-10-03 | 中国电子科技集团公司第十八研究所 | 一种锌-空气电池用正电极及其制造方法 |
EP1900719A1 (en) * | 2006-09-01 | 2008-03-19 | BUSS ChemTech AG | Manufacture of substantially pure monochloroacetic acid |
JP4659056B2 (ja) * | 2008-03-04 | 2011-03-30 | ダイセル化学工業株式会社 | 脱ハロゲン化触媒の製造方法 |
MX351566B (es) | 2011-06-21 | 2017-10-19 | Akzo Nobel Chemicals Int Bv | Proceso para separar acido monocloroacetico y acido dicloroacetico mediante destilacion extractiva. |
BR112014008207B1 (pt) | 2011-10-20 | 2019-09-10 | Akzo Nobel Chemicals Int Bv | processo para a purificação de uma alimentação líquida |
AU2012324958B2 (en) | 2011-10-20 | 2016-03-17 | Akzo Nobel Chemicals International B.V. | Process for the hydrodechlorination of a liquid feed comprising dichloroacetic acid |
CN102553584B (zh) * | 2011-12-26 | 2013-10-16 | 西安凯立化工有限公司 | 氯乙酸生产用改性钯炭催化剂及其制备方法 |
JP5978386B2 (ja) | 2012-04-06 | 2016-08-24 | アクゾ ノーベル ケミカルズ インターナショナル ベスローテン フエンノートシャップAkzo Nobel Chemicals International B.V. | モノクロロ酢酸およびジクロロ酢酸を抽出蒸留により有機溶媒を使用して分離する方法 |
RU2711661C2 (ru) | 2015-03-17 | 2020-01-20 | Акцо Нобель Кемикалз Интернэшнл Б.В. | Способ очистки монохлороуксусной кислоты |
AR104892A1 (es) | 2015-06-12 | 2017-08-23 | Akzo Nobel Chemicals Int Bv | Proceso para la hidrodecloración de una alimentación que comprende ácido dicloroacético |
PL230378B1 (pl) * | 2016-02-04 | 2018-10-31 | Pcc Mcaa Spolka Z Ograniczona Odpowiedzialnoscia | Sposób produkcji wysokiej czystości kwasu monochlorooctowego |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3841381A (en) * | 1969-11-06 | 1974-10-15 | Solvay | Apparatus for producing and recovering rubbery or sticky polymers |
US3901660A (en) * | 1970-10-29 | 1975-08-26 | Hoechst Ag | Apparatus for the continuous carrying out heterogeneous catalytic reaction in liquid phase |
DE2053115C3 (de) * | 1970-10-29 | 1978-08-31 | Hoechst Ag, 6000 Frankfurt | Verfahren zur kontinuierlichen Durchführung heterogener katalytischer Reaktionen in flüssiger Phase im Fließbett |
FR2176196A5 (sv) * | 1972-03-14 | 1973-10-26 | Heurtey Sa | |
SE392045B (sv) * | 1972-08-17 | 1977-03-14 | Hoechst Ag | Sett att framstella en av finkornigt berarmaterial och palladium bestaende katalysator |
DE2323777C2 (de) * | 1973-05-11 | 1975-01-16 | Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt | Verfahren zur kontinuierlichen Reinigung von roher Monochloressigsäure |
DE2432587C3 (de) * | 1974-07-06 | 1980-01-10 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Herstellung pulverförmiger Katalysatorträger oder Katalysatoren für Umsetzungen im Fließbett in flüssiger Phase |
US4476242A (en) * | 1981-10-29 | 1984-10-09 | Standard Oil Company (Indiana) | Process for preparing palladium on carbon catalysts for purification of crude terephthalic acid |
FR2645531B1 (fr) * | 1989-04-07 | 1991-06-07 | Atochem | Procede et catalyseur de deshalogenation d'acides carboxyliques alphahalogenes |
-
1993
- 1993-02-12 DE DE69306826T patent/DE69306826T2/de not_active Expired - Lifetime
- 1993-02-12 EP EP93400364A patent/EP0557169B1/fr not_active Expired - Lifetime
- 1993-02-12 ES ES93400364T patent/ES2095589T3/es not_active Expired - Lifetime
- 1993-02-18 FI FI930713A patent/FI119046B/sv not_active IP Right Cessation
- 1993-02-18 CA CA002089850A patent/CA2089850C/fr not_active Expired - Lifetime
- 1993-02-19 KR KR93002346A patent/KR960016684B1/ko not_active IP Right Cessation
- 1993-02-19 CN CN93103171A patent/CN1042199C/zh not_active Expired - Lifetime
- 1993-02-19 JP JP5030787A patent/JPH088990B2/ja not_active Expired - Fee Related
- 1993-02-19 US US08/020,944 patent/US5414116A/en not_active Expired - Lifetime
-
1994
- 1994-09-02 US US08/300,247 patent/US5466650A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH05345132A (ja) | 1993-12-27 |
CN1079416A (zh) | 1993-12-15 |
US5466650A (en) | 1995-11-14 |
EP0557169B1 (fr) | 1996-12-27 |
DE69306826D1 (de) | 1997-02-06 |
US5414116A (en) | 1995-05-09 |
KR930017615A (ko) | 1993-09-20 |
JPH088990B2 (ja) | 1996-01-31 |
CA2089850C (fr) | 2001-11-20 |
ES2095589T3 (es) | 1997-02-16 |
FI930713A0 (fi) | 1993-02-18 |
DE69306826T2 (de) | 1997-05-28 |
FI930713A (fi) | 1993-08-20 |
CN1042199C (zh) | 1999-02-24 |
CA2089850A1 (fr) | 1993-08-20 |
KR960016684B1 (en) | 1996-12-20 |
EP0557169A1 (fr) | 1993-08-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI119046B (sv) | Katalyt för avhalogenisering av alfahalogenerade karboxylsyror, samt användning av den för rening monoklorätiksyra | |
MXPA04010370A (es) | Metodo para quitar contaminantes de hierro de corrientes liquidas durante la produccion y purificacion de acidos aromaticos. | |
JP2003506344A (ja) | 3−ヒドロキシプロパナールの調製方法 | |
WO1998024743A1 (en) | Tfpx synthesis | |
EP2748139B1 (en) | Process for the hydrodechlorination of a liquid feed comprising dichloroacetic acid | |
AU770554B2 (en) | Low pressure amine reactor | |
JP3852972B2 (ja) | 飽和エステルの製造方法 | |
KR100242369B1 (ko) | 알파-할로겐화 카르복실산의 탈할로겐화를 위한 촉매 | |
US5434322A (en) | Process for preparing 1,1-dichloro-2,2,2-trifluoroethane | |
JP3035641B2 (ja) | メタノールのカルボニル化による酢酸の製造方法 | |
KR0130195B1 (ko) | 에틸아민의 합성 방법 | |
US6232488B1 (en) | Method for hydrogenating dinitriles | |
EP1127865B1 (en) | Process for producing 1,1,1-Trifluoroacetone | |
FR2711365A1 (fr) | Procédé d'hydroxycarbonylation du butadiène. | |
JPS5888330A (ja) | 1,1,1,3,3,3‐ヘキサフルオロ‐2‐プロパノールの製法 | |
WO2002028525A1 (en) | PROCESS FOR THE PREPARATION OF A MIXTURE OF ε-CAPROLACTAM AND/OR ε-CAPROLACTAM PRECURSORS | |
JP3995493B2 (ja) | 1,1,1−トリフルオロアセトンの製造方法 | |
EP0365403B1 (fr) | Procédé de préparation de trifluoroethanol | |
JPS6351351A (ja) | モノクロル酢酸の製造方法 | |
JPH05140047A (ja) | 炭酸エステルの製造法 | |
FR2701944A1 (fr) | Procédé d'hydroxycarbonylation de lactones en acides dicarboxyliques aliphatiques. | |
EP0326456B1 (fr) | Procédé de préparation de chloranil | |
KR930005305B1 (ko) | 디메틸카보네이트 제조용 무기체담지 촉매, 그 제조방법 및 이를 이용한 디메틸카보네이트의 제조방법 | |
JPH07258122A (ja) | 低次ハロゲン化炭化水素の製造方法 | |
WO2013153419A1 (en) | An efficient continuous process for manufacturing of 4-aminodiphenylamine from aniline and nitrobenzene |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MA | Patent expired |