发明名称 |
Silicon substituted zeolite compositions and process for preparing same |
摘要 |
Aluminum from AlO4-tetrahedra of as-synthesized zeolites is extracted and substituted with silicon to form zeolite compositions having higher SiO2/Al2O3 molar ratios and exhibiting distinctive chemical and physical properties. The preparative procedure involves contact of the starting zeolite with an aqueous solution of a fluorosilicate salt using controlled proportions and temperature and pH conditions which avoid aluminum extraction without silicon substitution.
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申请公布号 |
US4503023(A) |
申请公布日期 |
1985.03.05 |
申请号 |
US19810315853 |
申请日期 |
1981.10.28 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
BRECK, DECEASED, DONALD W.;BLASS, EXECUTOR, BY HAROLD;SKEELS, GARY W. |
分类号 |
B01J29/06;B01J29/08;B01J29/18;B01J29/70;C01B39/02;(IPC1-7):C01B33/28 |
主分类号 |
B01J29/06 |
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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