发明名称 |
DOUBLE-COMPONENT MODIFIED MOLECULAR SIEVE WITH IMPROVED HYDROTHERMAL STABILITY AND PRODUCTION METHOD THEREOF |
摘要 |
A method for producing double-component modified molecular sieve comprises adding molecular sieve to an aqueous solution containing phosphorus to form a mixture, allowing the mixture to react at pH of 1-10, temperature of 70-200°C and pressure of 0.2-1.2 MPa for 10-200 min, and then filtering, drying and baking the resultant to obtain phosphorus-modified molecular sieve, and then adding the phosphorus-modified molecular sieve to an aqueous solution containing silver ions, allowing the phosphorus-modified molecular sieve to react with silver ions at 0-100°C in dark condition for 30-150 min, and then filtering, drying and baking. The obtained double-component modified molecular sieve contains 88-99 wt% molecular sieve with a ratio of silica to alumina between 15 and 60, 0.5-10 wt% phosphorus (based on oxides) and 0.01-2 wt% silver (based on oxides), all based on dry matter. A catalyst produced from the double-component modified molecular sieve has improved hydrothermal stability and microactivity. |
申请公布号 |
CA2779312(C) |
申请公布日期 |
2016.09.20 |
申请号 |
CA20092779312 |
申请日期 |
2009.12.01 |
申请人 |
PETROCHINA COMPANY LIMITED |
发明人 |
GAO, XIONGHOU;JI, DONG;ZHANG, HAITAO;DUAN, HONGCHANG;LI, DI;TAN, ZHENGGUO;SU, YI;TANG, ZHICHENG;WANG, YI;MA, YANQING;SUN, YANBO |
分类号 |
C01B39/38;B01J29/08;B01J29/44;B01J29/70;B01J37/02;B01J37/28;C01B39/24;C01B39/46;C07C11/04;C07C11/06;C10G11/05 |
主分类号 |
C01B39/38 |
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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