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 paraxylene using a zeolitic catalyst system based on MTW-type zeolite that is substantially free of mordenite. The invention obtains an improved yield of paraxylene without excess benzene production by dealkylation. The zeolitic silica-to-alumina ratio ranges from 20 to 45. Elimination of mordenite in the catalyst improves yields and integrated aromatics complex economics by reducing undesirable aromatic ring-loss reactions as well.
摘要:
A mobile payment system and method are described that facilitates the secure and real time user authentication and activation of a mobile payment account for a user portable electronic device over a communications network.
摘要:
An information handling system housing is manufactured from a laminate material having a stainless steel exterior and magnesium interior that are encapsulated with injection molding. A thin sheet of stainless steel is formed to have a lip that meets against the magnesium and is secured in place with injection molding material. In one embodiment, an injection molding tool holds the laminate material in place to encapsulate the perimeter of the material with injection molding material and also activates an adhesive that holds the laminate material together, such as by applying pressure and heat to the laminate material.
摘要:
A shutter assembly includes a main body having a first side member and a second side member. Each of the first side member and the second side member has a first attachment feature. The shutter assembly also includes at least one cap. The cap has a pair of spaced apart second attachment features. The first attachment features of the first side member and the second side member of the main body and the second attachment features of the cap cooperate with one another to selectively secure the cap to the main body.
摘要:
A system and method for automatically targeting Web-based advertisements is described. Advertisements are identified relative to a query, wherein identified advertisements describe characteristics relative to at least one of a product and a service. The advertisements are scored according to match between the query and the characteristics of the identified advertisements. At least some of the advertisements are provided as Web-based content.
摘要:
A mobile payment system is described that facilitates efficient and secured payment transactions from an electronic wallet on a user portable electronic device with a merchant point of sale terminal over a communication link. In one aspect, a mobile device is configured for transaction operations from a plurality of mobile transaction accounts in an electronic wallet. The mobile device includes a plurality of transaction modules operable to process transaction operations with a respective mobile transaction account, each transaction module configured for transaction operations to be completed after an authentication process using a central authentication module coupled to the plurality of transaction modules, operable to verify a user input passcode and to respond to authentication requests from the plurality of transaction module after the user input passcode is verified. Preferably, at least one of the transaction modules is configured for contactless transaction operations over a contactless communication link.
摘要:
A shutter assembly includes a main body having a first side member and a second side member. Each of the first side member and the second side member has a first attachment feature. The shutter assembly also includes at least one cap. The cap has a pair of spaced apart second attachment features. The first attachment features of the first side member and the second side member of the main body and the second attachment features of the cap cooperate with one another to selectively secure the cap to the main body.