TW200609212A - Process for making dialkyl carbonates - Google Patents

Process for making dialkyl carbonates

Info

Publication number
TW200609212A
TW200609212A TW094107161A TW94107161A TW200609212A TW 200609212 A TW200609212 A TW 200609212A TW 094107161 A TW094107161 A TW 094107161A TW 94107161 A TW94107161 A TW 94107161A TW 200609212 A TW200609212 A TW 200609212A
Authority
TW
Taiwan
Prior art keywords
alkyl
dialkyl carbonates
carbamates
urea
alcohol
Prior art date
Application number
TW094107161A
Other languages
Chinese (zh)
Other versions
TWI328003B (en
Inventor
J Yong Ryu
Abraham P Gelbein
Original Assignee
Catalytic Distillation Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/821,225 external-priority patent/US7074951B2/en
Application filed by Catalytic Distillation Tech filed Critical Catalytic Distillation Tech
Publication of TW200609212A publication Critical patent/TW200609212A/en
Application granted granted Critical
Publication of TWI328003B publication Critical patent/TWI328003B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/96—Esters of carbonic or haloformic acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C68/00—Preparation of esters of carbonic or haloformic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

A process for the production of dialkyl carbonates from the reaction of alcohol, for example C1-C3 alcohols, with urea is disclosed wherein the water and ammonium carbamates impurities in the feed are removed in a prereactor. The water is reacted with urea in the feed to produce ammonium carbamate which is decomposed along with the ammonium carbamates originally in the feed to ammonia and carbon dioxide. In addition some of the urea is reacted with the alcohol in the first reactor to produce alkyl carbamate which is a precursor to dialkyl carbonate. Dialkyl carbonates are produced in the second reaction zone. The undesired by-product N-alkyl alkyl carbamates are continuously distilled off from the second reaction zone along with ammonia, alcohol and dialkyl carbonates under the steady state reactor operation. N-alkyl alkyl carbamates can be converted to heterocyclic compounds in a third reaction zone to remove as solids from the system.
TW094107161A 2004-04-08 2005-03-09 Process for making dialkyl carbonates TWI328003B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/821,225 US7074951B2 (en) 2004-03-12 2004-04-08 Process for making dialkyl carbonates

Publications (2)

Publication Number Publication Date
TW200609212A true TW200609212A (en) 2006-03-16
TWI328003B TWI328003B (en) 2010-08-01

Family

ID=35197533

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094107161A TWI328003B (en) 2004-04-08 2005-03-09 Process for making dialkyl carbonates

Country Status (10)

Country Link
EP (1) EP1740529A4 (en)
JP (1) JP4904258B2 (en)
KR (1) KR100899058B1 (en)
CN (1) CN101084179B (en)
AR (1) AR047904A1 (en)
EG (1) EG23642A (en)
RU (1) RU2367648C2 (en)
TW (1) TWI328003B (en)
WO (1) WO2005102986A2 (en)
ZA (1) ZA200606920B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI762704B (en) * 2017-08-21 2022-05-01 日商三菱瓦斯化學股份有限公司 Production method of dialkyl carbonate

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101044393B1 (en) * 2007-12-27 2011-06-27 주식회사 엘지화학 Catalyst composition comprising zirconium compounds for esterfication reaction and method for preparing ester compounds
US7851645B2 (en) * 2008-02-11 2010-12-14 Catalytic Distillation Technologies Process for continuous production of organic carbonates or organic carbamates and solid catalysts therefore
US8110698B2 (en) * 2008-02-11 2012-02-07 Shell Oil Company Process for producing diphenyl carbonate
JP2010168365A (en) * 2008-12-26 2010-08-05 Mitsubishi Chemicals Corp Method for producing symmetric dialkyl carbonate and asymmetric dialkyl carbonate
CN101781202B (en) * 2009-01-16 2014-04-23 亚申科技研发中心（上海）有限公司 Reaction process and system for preparing organic carbonic ester by catalytic alcoholysis of urea
KR101429834B1 (en) 2009-12-24 2014-08-12 미쓰이 가가쿠 가부시키가이샤 Method for treatment of isocyanate residue, and method for treatment of carbonate
CN102212009B (en) * 2010-04-09 2014-09-03 亚申科技研发中心（上海）有限公司 Process for co-producing dimethyl carbonate and dimethyl ether by urea alcoholysis method
CN103288645B (en) * 2012-02-23 2016-03-16 亚申科技研发中心（上海）有限公司 Separation of dimethyl ether in the technique of alcoholysis of urea co-producing dimethyl carbonate and dme also reclaims the method for ammonia
EP2917172B1 (en) * 2012-11-09 2019-06-19 Council of Scientific & Industrial Research Synthesis of methyl carbamate and dimethyl carbonate (dmc) in presence of stripping with inert gas or superheated vapours and a reactor for the same
CN105218306B (en) * 2014-07-03 2019-07-09 中国石油化工股份有限公司 Methanol Recovery method during coal based synthetic gas preparing ethylene glycol
JP6661305B2 (en) * 2014-09-22 2020-03-11 ダウ グローバル テクノロジーズ エルエルシー Carbamylation composition of monovalent metal-containing catalyst, polyol and urea compound, and carbamylation process using the same
CN104744247B (en) * 2015-03-13 2016-06-22 中国科学院化学研究所 A kind of preparation method of alkyl carbonate
CN107771174A (en) * 2015-03-13 2018-03-06 科学与工业研究委员会 New configuration and its in tubular reactor by the method for alkylol and urea synthesizing amino alkyl formate in purposes
TWI601571B (en) 2016-12-07 2017-10-11 財團法人工業技術研究院 Catalyst and method for synthesizing cyclic carbonate by the same
CN109422650B (en) * 2017-08-28 2021-08-03 中国石油化工股份有限公司 Continuous separation method of dimethyl carbonate and methanol mixture
KR102611842B1 (en) * 2017-08-28 2023-12-07 차이나 페트로리움 앤드 케미컬 코포레이션 Method for separating dimethyl carbonate from methanol
RU2665681C1 (en) * 2017-11-28 2018-09-04 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Catalyst and method for producing dimethyl carbonate therewith
KR20210144649A (en) * 2019-03-29 2021-11-30 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 Method for producing nitrile compound

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3881386B2 (en) * 1994-10-21 2007-02-14 多摩化学工業株式会社 Process for producing dialkyl carbonate
JP3968534B2 (en) * 1997-08-18 2007-08-29 三菱瓦斯化学株式会社 Method for producing dialkyl carbonate
JP3876939B2 (en) * 1997-03-17 2007-02-07 三菱瓦斯化学株式会社 Method for producing dialkyl carbonate
JPH10279536A (en) * 1997-04-03 1998-10-20 Mitsubishi Gas Chem Co Inc Production of dialkyl carbonate
US6031122A (en) * 1997-03-17 2000-02-29 Mitsubishi Gas Chemical Company, Inc. Process for producing dialkyl carbonate
US5902894A (en) * 1998-08-26 1999-05-11 Catalytic Distillation Technologies Process for making dialkyl carbonates
JP2000128834A (en) * 1998-10-20 2000-05-09 Mitsubishi Gas Chem Co Inc Production of dialkyl carbonate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI762704B (en) * 2017-08-21 2022-05-01 日商三菱瓦斯化學股份有限公司 Production method of dialkyl carbonate

Also Published As

Publication number Publication date
WO2005102986A2 (en) 2005-11-03
JP2007534674A (en) 2007-11-29
ZA200606920B (en) 2008-05-28
EP1740529A2 (en) 2007-01-10
AR047904A1 (en) 2006-03-01
KR100899058B1 (en) 2009-05-25
JP4904258B2 (en) 2012-03-28
KR20070000484A (en) 2007-01-02
WO2005102986A3 (en) 2007-08-09
RU2367648C2 (en) 2009-09-20
RU2006139133A (en) 2008-05-20
TWI328003B (en) 2010-08-01
EG23642A (en) 2007-03-07
CN101084179A (en) 2007-12-05
EP1740529A4 (en) 2008-02-20
CN101084179B (en) 2012-07-04

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