Heterogeneous catalyst and process for its manufacture
US4472533A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1982 |
| Grant date | Sep 18, 1984 |
| Priority date | — |
| Expiry date | Dec 15, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/348
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalysts for use in promoting heterogeneous chemical reactions, such as hydrogenation, cracking, dehydrogenation and Fischer-Tropsch reactions, are prepared by depositing a catalytically active metal such as nickel electrolytically onto an aluminum substrate in such a manner that the metal particles are deposited in micro-particulate form to enhance their catalytic activity. The aluminum substrate is prepared by cleaning and anodizing it, so as to deposit thereon an aluminum oxide surface film having micro porosity. Then the substrate is immersed into an electrolysis bath of solution of salt of the metal to be deposited, and subjected to alternating current electrolysis to cause the required deposition. Prior to use, the catalysts so prepared should be heated to remove absorbed gases from their porous surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.