Synthesis of large crystal size ZSM-5
US5182090A · kind A · utility
7Cited by
7References
1Claims
0Family size
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Key dates
| Filing date | Feb 19, 1992 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Feb 19, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a method for making large crystal size ZSM-5. This method involves the use of two organic cations, specifically tetrapropylammonium (TPA) and tetramethylammonium (TMA) cations, in the reaction mixture. This method further involves the use of a source of deliberately added alumina, such as aluminum sulfate, in the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.