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1. 发明申请

US20070049780A1 Methods of making xylene isomers 审中-公开
标题翻译：制备二甲苯异构体的方法
公开(公告)号：US20070049780A1
公开(公告)日：2007-03-01
申请号：US11215272
申请日：2005-08-30
申请人： Hilary Schwartz , Jeffrey Miller , Brian Henley , George Huff
发明人： Hilary Schwartz , Jeffrey Miller , Brian Henley , George Huff
IPC分类号： C07C4/12
CPC分类号： C07C6/00 , C07C5/2708 , C07C6/126 , C07C2529/26 , Y02P20/52 , C07C15/08
摘要： Disclosed herein are methods of making xylene isomers. The methods generally include contacting an aromatics-comprising feed with a non-sulfided catalyst under conditions suitable for converting the feed to a product comprising xylene isomers. The catalyst includes a support impregnated with a hydrogenation component. The support includes a macroporous binder and a sieve selected from the group consisting of a medium pore sieve, a large pore sieve, and mixtures thereof. The selection of the sieve will depend upon the size of the molecules in the feed, intermediate, and product that can be expected from the catalytic reactions. When the molecules are expected to be large, a large pore sieve should be used. In contrast, when the molecules are expected to be smaller, either a large pore sieve, a medium pore sieve, or a mixture thereof may be used. The macropores within the support have been found to be especially beneficial because they help to overcome diffusional limitations observed when utilizing highly-active catalysts lacking such macropores.
摘要翻译：本文公开了制备二甲苯异构体的方法。所述方法通常包括在适于将进料转化为包含二甲苯异构体的产物的条件下使包含芳烃的进料与非硫化催化剂接触。催化剂包括浸渍有氢化组分的载体。载体包括大孔粘合剂和选自中孔筛，大孔筛及其混合物的筛子。筛子的选择将取决于催化反应可以预期的进料，中间体和产物中分子的大小。当分子预期较大时，应使用大孔隙筛。相反，当分子预期更小时，可以使用大孔隙筛孔，中孔筛或其混合物。发现载体中的大孔是特别有益的，因为它们有助于克服当使用缺乏这种大孔的高活性催化剂时观察到的扩散限制。

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