Process for manufacturing catalysts containing copper, zinc, aluminum and at least one metal from the group formed of rare earths and zirconium and the resultant catalysts for reactions involving a synthesis gas
US4552861A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1985 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Mar 1, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Manufacture of catalysts containing at least four essential metals: copper, zinc, aluminum and at least one metal selected from the group formed of rare earths and zirconium. The process comprises the formation of a crystallized precipitate of the above-mentioned metals by intimate mixture of a crystallized precipitate of copper, zinc and aluminum, containing less than 0.06% by weight of sodium after washing, with a precipitate of at least one metal of the rare earths group and/or zirconium, containing less than 3% of nitrogen after washing. The catalysts are used in balanced reactions involving alcohols and synthesis gases, and particularly for methanol synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.