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.
Patent No.:
Date of Patent:
Dec. 15, 1998
Filed:
Mar. 31, 1997
Kenji Fujiwara, Kanagawa-ken, JP;
Hideaki Nakamura, Osaka-fu, JP;
Hiroshi Kato, Osaka-fu, JP;
Susumu Yoshinaga, Osaka-fu, JP;
Kazuo Wakimura, Osaka-fu, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A process for preparation of nitrous oxide, wherein ammonia is reacted with oxygen in the presence of steam using a copper-manganese oxide catalyst having diffraction angles measured by X-ray diffraction analysis of about 36.degree., about 58.degree. and about 64.degree.; a copper-manganese oxide catalyst suitable for the process. The catalyst is highly active and selective, has a long catalyst-lifetime, gives a non-condensable gas comprising nitrogen, oxygen and nitrous oxide which contains nitrous oxide in a high concentration, and is less deteriorative. The catalyst can be used in a process for preparation of nitrous oxide in which formation of NOx as by-products is reduced; and a process for stably recovering nitrous oxide.