The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 02, 2001

Filed:

Jan. 14, 1998
Applicant:
Inventors:

Yun Jin, Peking, CN;

Qiquan Yu, Peking, CN;

Shih-Ger Chang, El Cerrito, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/7055 ; B01J 2/7051 ; B01J 2/7049 ; B01J 8/02 ; B01J 8/00 ;
U.S. Cl.
CPC ...
B01J 2/7055 ; B01J 2/7051 ; B01J 2/7049 ; B01J 8/02 ; B01J 8/00 ;
Abstract

A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectivity of elemental sulfur over byproducts and has a high conversion efficiency. Various feed stream contaminants, such as water vapor are well tolerated. Additionally, hydrogen, carbon monoxide, or hydrogen sulfides can be employed as the reducing gases while maintaining high conversion efficiency. This allows a much wider range of uses and higher level of feed stream contaminants than prior art catalysts.


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