US EPA

1153308 

Journal Article 

How dimethyl carbonate is synthesized from methyl carbamate and methanol via catalysis 

Wu, TH; Zheng, ZQ; Liu, Y; Mao, FL; Zhang, QN; Chen, F 

2004 

0 

Abstracts of Papers of the American Chemical Society
ISSN: 0065-7727 

AMER CHEMICAL SOC 

Philadelphia, PA 

Abstracts of Papers - 228th ACS National Meeting 

228 

1 

U762-U762 

English 

WOS:000223712803000 

When dibutyl tin oxide was used as catalyst, the effects of several factors on the conversion and selectivity of the synthesis in which methyl carbamate reacted with methanol to produce dimethyl carbonate were intensively investigated. Particularly, the influences of reaction temperature, reaction time, initial pressure, mole ratio of methyl carbamate to methanol, and mass ratio of dibutyl tin oxide to methyl carbamate on the catalytic properties of dibutyl tin oxide were evaluated. The optimum operating conditions were obtained: reaction temperature of 200°C, reaction time of 4 hr, initial pressure of 1.4 MPa, mole ratio of methanol to methyl carbamate 9:1, mass ratio of dibutyl tin oxide to methyl carbamate 1:10. The yield of carbonate reached 38.1%. The industrializing production of dimethyl carbonate with reliable data was also presented. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA, 8/22-26/2004).