Mesoporous crystalline acid composition of a diphosphonate-phosphite of a tetravalent metal which can be used as a catalyst
US5892080A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Oct 2, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2540/525
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Solid mesoporous crystalline composition of diphospho-nate-phosphite of a tetravalent metal, with a limited distribution of mesopores having the formula EQU M(O.sub.3 P--R--PO.sub.3).sub.1-x-y (HPO.sub.3).sub.2x (O.sub.3 P--R--PO.sub.3 H.sub.2).sub.2y ! wherein: M is a tetravalent metal, R is a bivalent organic radical, x varies from 0.3 to 0.6, y varies from 0.05 to 0.3. The process for its production is described, together with its uses and a solid catalyst containing --SO.sub.3 H acid groups, active in the conversion processes of hydrocarbons, which can be obtained from said mesoporous crystalline composition by treatment with a sulfonicphosphonic or arylphosphonic acid, followed, only in the case of treatment with arylphosphonic acid, by sulfonation with a sulfonating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.