发明名称 |
METHOD OF MODIFYING ZEOLITE CATALYST |
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 |
KR20060047329(A) |
申请公布日期 |
2006.05.18 |
申请号 |
KR20050033086 |
申请日期 |
2005.04.21 |
申请人 |
SAUDI BASIC INDUSTRIES CORPORATION |
发明人 |
GHOSH ASHIM KUMAR;JUTTU GOPALAKRISHNAN;HARVEY PAMELA;KULKARNI NEETA |
分类号 |
B01J29/40;B01J27/16;B01J29/04;C01B39/36;C07C2/86 |
主分类号 |
B01J29/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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