Patent · US Active

Processes for producing an oxalate by coupling of CO

US8269036B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignees

CHINA PETROLEUM & CHEMICAL CORPORATION · CN
SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC · CN

Inventors

Juntao Liu · Lo Wu, CN
Zhiyan Zhu · Shanghai, CN
Wanmin Wang · Shanghai, CN
Lei Li · Zhengzhou, CN

Key dates

Filing date	Dec 18, 2009
Grant date	Sep 18, 2012
Priority date	—
Expiry date	Nov 25, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/36
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Provided are processes for producing an oxalate by coupling of CO in the presence of a nitrite, wherein two or more reaction zones in series are used, and at least a portion of the oxalate as reaction product is separated between the reaction zones, and/or the nitrite is fed stagewise. The processes described herein can effectively enhance the selectivity to the oxalate and the single-pass conversion of the feedstock.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.