Preparation of improved catalyst composition
US4386017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1980 |
| Grant date | May 31, 1983 |
| Priority date | — |
| Expiry date | Nov 10, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a catalyst composition comprising copper oxide, zinc oxide and aluminum oxide as essential ingredients and optionally containing boron oxide, which comprises PA1 (a) a step of precipitating from an aqueous solution of a water-soluble copper salt optionally containing a water-soluble boron compound the copper component, together with the boron component if it is present, using an alkaline substance selected from alkali carbonates and alkali bicarbonates as a precipitant; PA1 (b) a step of blowing carbon dioxide gas into an aqueous dispersion of a zinc compound selected from zinc oxide and zinc hydroxide optionally containing a water-soluble boron compound to convert the zinc compound to basic zinc carbonate and simultaneously precipitate the boron component if it is present; and PA1 (c) a step of calcining a mixture of the solid products obtained in steps (a) and (b) in the presence of an alumina precursor compound. The resulting catalyst is useful for synthesizing methanol from a gaseous mixture of carbon monoxide and/or carbon dioxide and hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.