发明名称 |
Method of preparing a xylene product |
摘要 |
A method of modifying a zeolite catalyst to increase para-xylene selectivity of the zeolite catalyst in toluene methylation reactions is provided. The method includes forming a slurry of a ZSM-5-type zeolite and an aqueous solution of a phosphorus compound. Water is removed from the slurry to provide a non-steamed, phosphorus treated ZSM-5 zeolite catalyst without deposition of phosphorus onto the catalyst by organophosphorus vapor deposition. The resulting non-steamed, phosphorus treated ZSM-5 zeolite catalyst has a pore volume of from 0.2 ml/g or less and provides greater than 80% para-xylene selectivity of mixed xylenes when used in toluene methylation.
|
申请公布号 |
US7560608(B2) |
申请公布日期 |
2009.07.14 |
申请号 |
US20070876259 |
申请日期 |
2007.10.22 |
申请人 |
SAUDI BASIC INDUSTRIES CORPORATION |
发明人 |
GHOSH ASHIM KUMAR;JUTTU GOPALAKRISHNAN;HARVEY PAMELA;KULKARNI NEETA |
分类号 |
C07C2/66;B01J27/16;B01J29/40;C07C2/86 |
主分类号 |
C07C2/66 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|