发明名称 |
Binderless zeolite extrudates and method of producing |
摘要 |
Binderless zeolite sieve extrudates are made by extruding a mixture containing about 40-60% zeolites with the remainder being a metakaolin clay that has mixed with it about 90-120% of the stoichiometric amount of sodium hydroxide to convert the clay to a zeolite. After extrusion the particles are allowed to dry age during which time most of the clay is converted to the zeolite. A further heat treatment in a dilute caustic aqueous solution insures complete crystallization with subsequent washing and calcination to produce an adsorbent product.
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申请公布号 |
US4381255(A) |
申请公布日期 |
1983.04.26 |
申请号 |
US19810225075 |
申请日期 |
1981.01.14 |
申请人 |
W. R. GRACE & CO. |
发明人 |
NOZEMACK, RICHARD J.;CHI, CHANG W.;SCHWONKE, JOHN J. |
分类号 |
B01J20/18;B01J;B01J21/16;B01J29/06;B01J37/00;C01B39/00;C01B39/02;C01B39/18;(IPC1-7):B01J21/16 |
主分类号 |
B01J20/18 |
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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