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. 24, 1991
Filed:
Aug. 24, 1990
Akira Saiai, Ooi, JP;
Yasuharu Yokoyama, Ooi, JP;
Satoshi Sakurada, Ooi, JP;
Takao Hashimoto, Ooi, JP;
Tomoko Segawa, Ooi, JP;
Fumiya Ishizaki, Ooi, JP;
Tonen Corporation, Tokyo, JP;
Petroleum Energy Center, Tokyo, JP;
Abstract
In the steam reforming catalyst for hydrocarbon according to the present invention, catalyst metal is supported on or in the surface layer of a zirconia carrier containing yttria and having a crystal structure primarily consisting of tetragonal system or tetragonal and cubic systems. Compared with conventional steam reforming catalyst, it has higher reaction efficiency and suppresses carbon deposition extensively even when steam/carbon ratio is low and exhibits higher hydrogen generation efficiency and higher catalyst strength. Particularly, it is suitable as a catalyst for internal reforming type fuel cell. In the steam reforming catalyst of hydrocarbon of this invention, metal catalyst can be effectively utilized by supporting metal catalyst only on surface layer of zirconia carrier.