摘要:
The disclosed invention describes an apparatus comprising a process microchannel, a heat exchange channel and a heat transfer wall positioned between the process microchannel and the heat exchange channel, the heat transfer wall comprising at least one thermal resistance layer.
摘要:
A process for the regeneration of a deactivated zeolite beta catalyst such as rare earth promoted zeolite beta catalyst deactivated in the course of an aromatic alkylation reaction. A zeolite beta conversion catalyst deactivated with the deposition of coke is heated to a temperature in excess of 300° C. in an oxygen-free environment. An oxidative regeneration gas is supplied to the catalyst bed with oxidation of a portion of a relatively porous coke component to produce an exotherm moving through the catalyst bed. At least one of the temperature and oxygen content of the gas is progressively increased to oxidize a porous component of the coke. Regeneration gas is supplied having at least one of an increased oxygen content or increased temperature to oxidize a less porous refractory component of the coke. The regeneration process is completed by passing an inert gas through the catalyst bed at a reduced temperature.
摘要:
A catalyst comprising a dehydrogenation catalyst and a water gas shift co-catalyst can be used for the dehydrogenation of alkylaromatic hydrocarbons to alkenylaromatic hydrocarbons. For instance, the catalyst can be used for the dehydrogenation of ethylbenzene to styrene. The catalyst can include an iron compound, a potassium compound, and a cerium compound.
摘要:
A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane to toluene, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5 - 15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen.
摘要:
[Object] It is an object of the present invention to provide a method for manufacturing an olefin, wherein side reactions of a metathesis reaction are suppressed and the selectivity of a desired product is increased by facilitating double bond isomerization of raw material olefins. Furthermore, it is an object to provide a method for manufacturing an olefin, wherein a desired product can be obtained efficiently at a high productivity by maintaining the activity of a metathesis catalyst for a long term and suppressing deterioration of performance of a catalyst (isomerization catalyst) for facilitating double bond isomerization of the raw material olefins. [Solution] A method for manufacturing an olefin according to the present invention is a method for manufacturing an olefin through reaction between the same type of or different types of raw material olefins to obtain an olefin having a structure different from the structure of the raw material olefins, the method including using a catalyst containing at least one type of metal element selected from the group consisting of tungsten, molybdenum, and rhenium together with other specific catalysts.
摘要:
A dehydrogenation catalyst is described comprising an iron oxide, an alkali metal or compound thereof, and silver or a compound thereof. Further a process is described for preparing a dehydrogenation catalyst that comprises preparing a mixture of iron oxide, an alkali metal or compound thereof, and silver or a compound thereof and calcining the mixture. A process for dehydrogenating a dehydrogenatable hydrocarbon and a process for polymerizing the dehydrogenated hydrocarbon are also described.
摘要:
The invention relates to a method for the production of 1-olefins from 2-hydroxyalkanes by means of catalytic dehydration in non-isomerising conditions. The invention also relates to a catalyst which is particularly suitable for said method, said catalyst comprising formal yttrium oxide (y2O3), zirconium dioxide (ZrO2) and an alkali oxide and/or alkaline-earth oxide.
摘要:
Catalyst composition comprising a zeolite and a binder, wherein the zeolite is a Ga containing zeolite and the binder is a La modified kaolin and process for converting lower alkanes to aromatic hydrocarbons, using said catalyst composition. Preferably the aromatic hydrocarbons consist of at least 45 wt% of benzene, toluene and xylenes.