发明名称 |
FORMSELEKTIVER ZEOLITHKATALYSATOR UND SEINE VERWENDUNG ZUR UMSETZUNG VON AROMATISCHEN KOMPONENTEN |
摘要 |
<p>A shape-selective catalyst comprises a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element, such as aluminum, boron, iron and/or gallium, preferably aluminum; Y is a tetravalent element such as silicon and/or germanium, preferably silicon; and n is greater than about 12, and wherein the crystals have a major dimension of at least about 0.5 micron and a surface YO2/X2O3 ratio which is no more than 20 % less than the bulk YO2/X2O3 ratio of the crystal. The crystals have a diffusion-modifying surface coating of a refractory material such as silica or coke. The catalyst is useful in a wide variety of selective hydrocarbon conversion processes, particularly the selective disproportionation of toluene to para-xylene.</p> |
申请公布号 |
DE69626685(T2) |
申请公布日期 |
2003.08.21 |
申请号 |
DE1996626685T |
申请日期 |
1996.11.05 |
申请人 |
EXXONMOBIL OIL CORP., FAIRFAX |
发明人 |
ABICHANDANI, SAHIB;LISSY, NOWAKIWSKA;RUBIN, KOENIG;SHARMA, BHARDWAJ;SHIHABI, SAID |
分类号 |
B01J29/40;B01J29/04;B01J29/86;B01J29/87;B01J29/88;C07C2/00;C07C2/66;C07C4/06;C07C4/18;C07C5/27;C07C5/41;C07C6/12;C07C15/08;C10G11/02;C10G35/06 |
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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