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1. 发明申请

WO2006074254A2 TOLUENE DISPROPORTIONATION PROCESS UTILIZING MILD SULFIDING DURING STARTUP 审中-公开
标题翻译：在启动过程中利用牛奶硫化的TOLUENE分解过程
公开(公告)号：WO2006074254A2
公开(公告)日：2006-07-13
申请号：PCT/US2006000232
申请日：2006-01-05
申请人： FINA TECHNOLOGY , XIAO XIN , FUSSELL BECKY , BUTLER JAMES , GOMEZ BRANDI
发明人： XIAO XIN , FUSSELL BECKY , BUTLER JAMES , GOMEZ BRANDI
IPC分类号： C07C5/22
CPC分类号： B01J29/24 , B01J37/20 , C07C6/123 , C07C6/126 , C07C2529/18 , C07C2529/22 , Y02P20/52 , C07C15/08
摘要： A process for the disproportionation of toluene over a nickel-modified mordenite catalyst which has been pretreated with mild sulfiding procedure. The sulfur dose is employed in a minor amount relative to the nickel content of the catalyst. The modified mordenite catalyst is contacted with a sulfur-containing compound such as hydrogen sulfide or dimethyldisulfide (DMDS) under pretreatment conditions involving a temperature of at least 100°C. The sulfur-containing compound is employed in a relatively small amount to passivate only a minor portion of the active nickel sites. A toluene-containing feedstock is brought into contact with the pretreated catalyst under conditions effective for the disproportionation of toluene and a disproportionation product is removed from contact with the catalyst. The mordenite catalyst contains nickel in an amount within the range of 0.1-2 wt.%. The catalyst may contain another metal such as palladium or platinum, or a lanthanide series metal such as lanthanum or cerium. Pretreatment of the catalyst may be carried out by flowing a fluid pretreatment stream having a sulfur component into contact with the catalyst. The pretreatment stream comprises hydrogen sulfide or a thio compound which is converted to hydrogen sulfide under the pretreatment conditions.
摘要翻译：一种已经用轻度硫化方法预处理的镍改性丝光沸石催化剂歧化甲苯的方法。硫剂量相对于催化剂的镍含量少量使用。在涉及至少100℃的温度的预处理条件下，将修饰的丝光沸石催化剂与含硫化合物如硫化氢或二甲基二硫化物（DMDS）接触。含硫化合物的使用量相对较少，仅钝化少部分活性镍部位。使含甲苯的原料在有效用于歧化甲苯的条件下与预处理的催化剂接触，并且歧化产物被除去与催化剂的接触。丝光沸石催化剂含有0.1-2重量％范围内的量的镍。催化剂可以含有另一种金属如钯或铂，或镧系金属如镧或铈。催化剂的预处理可以通过使具有硫成分的流体预处理流与催化剂接触来进行。预处理流包含硫化氢或在预处理条件下转化为硫化氢的硫代化合物。

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