摘要:
This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain an improved yield of para-xylene from the mixture relative to prior art processes.
摘要:
This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain an improved yield of para-xylene from the mixture relative to prior art processes.
摘要:
This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain improved yield of para-xylene from the mixture relative to prior art processes.
摘要:
A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
摘要翻译:使用优选基本上不含丝光沸石的低Si / Al 2 MTW型沸石的沸石催化剂体系将乙苯异构化为二甲苯如对二甲苯的方法。 催化剂可以是双金属的,其中两种金属是铂和锡。
摘要:
A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
摘要翻译:使用优选基本上不含丝光沸石的低Si / Al 2 MTW型沸石的沸石催化剂体系将乙苯异构化为二甲苯如对二甲苯的方法。 催化剂可以是双金属的,其中两种金属是铂和锡。
摘要:
A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
摘要翻译:使用优选基本上不含丝光沸石的低Si / Al 2 MTW型沸石的沸石催化剂体系将乙苯异构化为二甲苯如对二甲苯的方法。 催化剂可以是双金属的,其中两种金属是铂和锡。
摘要:
One exemplary embodiment can be a regeneration process for a C8 alkylaromatic isomerization catalyst. The process can include:contacting the C8 alkylaromatic isomerization catalyst with a first gas stream comprising an oxidizing gas at a first stage for a first time period and a first temperature effective to remove at least a portion of a carbonaceous material from the C8 alkylaromatic isomerization catalyst; andcontacting the C8 alkylaromatic isomerization catalyst with a second gas stream comprising the oxidizing gas at a second stage for a second time period and a second temperature effective to remove another portion of the carbonaceous material from the C8 alkylaromatic isomerization catalyst.
摘要:
A game call striker for frictionally interacting with a prior art game call. The game call striker includes a striker member that outwardly extends from a body portion. The body portion comprising first and second sound chambers, the first sound chamber including an insert sized to frictionally receive a base end of the striker member. In particular, the base end is fixedly secured within the insert with adhesive means such as glue. The striker member extends from the insert, through the first sound chamber, and outwardly extends from the body portion without the outer surface of the striker member touching the side walls of the first sound chamber. As a result, it is as though the striker member is “floating” within the first sound chamber.
摘要:
One exemplary embodiment can be an extruded C8 alkylaromatic isomerization catalyst. The extruded catalyst can include: about 2-about 20%, by weight, of an MTW zeolite; about 80-about 98%, by weight, of a binder including an alumina; about 0.01-about 2.00%, by weight, of a noble group metal calculated on an elemental basis; and about 100 ppm-less than about 1000 ppm, by weight, of at least one alkali metal calculated on an elemental basis. Generally, the weight percents of the MTW zeolite, the binder, the noble group metal, and the at least one alkali metal are based on a weight of the extruded catalyst.
摘要:
A process for isomerizing alkyl aromatic hydrocarbons using a catalyst comprising a zeolite and a platinum group metal component is described. The zeolite comprises a new family of zeolites designated UZM-8HS which are derived from UZM-8 zeolites by treating the UZM-8 with a fluoro-silicate salt, an acid, etc. The UZM-8HS zeolites have unique x-ray diffraction patterns.