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:
Apr. 11, 2000
Filed:
Mar. 09, 1998
Masami Takeuchi, Tokyo, JP;
Hirotaka Mabuse, Tokyo, JP;
Taiki Watanabe, Tokyo, JP;
Michiaki Umeno, Tokyo, JP;
Takashi Matsuda, Tokyo, JP;
Kozo Mori, Tokyo, JP;
Kenji Ushikoshi, Tokyo, JP;
Jamil Toyir, Tokyo, JP;
Shengcheng Luo, Tokyo, JP;
Jingang Wu, Tokyo, JP;
Masahiro Saito, Tsukuba, JP;
Abstract
The invention relates to a copper-based catalyst with high activity and a long catalyst life and to a method of producing the catalyst. This catalyst essentially comprises copper oxide, zinc oxide, aluminum oxide, and silicon oxide and optionally containing zirconium oxide, gallium oxide, and palladium oxide, wherein with the total weight of the catalyst being taken as 100%, the above oxides account for, in the order mentioned, 20-60 weight %, 10-50 weight %, 2-10 weight %, 0.3-0.9 weight %, 0-40 weight %, 0-10 weight %, and 0-10 weight %, respectively, and the silicon oxide mentioned above has been derived from colloidal silica or dissolved silica in water, which catalyst has been subjected to calcination at 480-690.degree. C.