摘要:
Desulfurization of hydrocarbon feeds is achieved by first contacting the entire feed with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone operating under mild conditions; a flashing column downstream of the hydrodesulfurization reaction zone fractionates the effluent to obtain a first fraction which contains refractory organosulfur compounds and a second fraction that is substantially free of organosulfur compounds, since the organosulfur compounds boiling in the range of this fraction were the labile organosulfur compounds which were initially removed by mild hydrodesulfurization. The first fraction is contacted with a gaseous oxidizing agent over an oxidation catalyst having a formula CuxZn1-xAl2O4 in a gas phase catalytic oxidation reaction zone to convert the refractory organosulfur compounds to SOx and low sulfur hydrocarbons. The by-product SOx is subsequently removed, producing a stream containing a reduced level of organosulfur compounds.
摘要:
A modified catalyst is described which can be used as a dehydration/hydrogenation catalyst in a multistage catalyst system for the catalysed production of saturated hydrocarbons from carbon oxides and hydrogen. The modified catalyst comprises: an acidic substrate comprising an M1-zeolite or M1-silicoalumino phosphate (SAPO) catalyst, where M1 is a metal; and a modifier including a metal M2. M2 comprises an alkali metal or alkaline earth metal. In examples described the modifier includes a Group II metal, for example Ca.
摘要:
A process for depositing nanostructured material onto a particulate substrate material comprising the steps of: a) preparing a precursor material; b) forming an atomized dispersion containing nanophased material when subjecting said precursor material to elevated temperature; and c) contacting the atomized dispersion with the substrate material to deposit the nanophased material on the substrate material. The substrate material is in mobile and particulate form for contacting step (c). An apparatus for carrying out the process is also disclosed.
摘要:
A method of catalytically preparing a fluid product from solid carbonaceous material is described. In the method, at least one of the following equilibria is established by one or more catalysts: a) CH3OH=CO+2H2, b) CO+H2O=CO2+H2. In some versions, the solid carbonaceous material is woody biomass. Components of the fluid product can include one or a combination of C5-C9 alcohols. In certain versions, the method can be practiced with substantially all of the carbon in the carbonaceous material being converted to the fluid product. Also, in some versions, the fluid product can be prepared with substantially no char formation. The fluid product of various versions can be used directly as fuel or as a reagent for preparing commodity chemicals without the need for separating the fluid product components.
摘要翻译:描述了从固体碳质材料催化制备流体产物的方法。 在该方法中,通过一种或多种催化剂建立以下平衡中的至少一种:a)CH 3 OH = CO + 2H 2,b)CO + H 2 O = CO 2 + H 2。 在一些版本中,固体含碳材料是木质生物质。 流体产物的组分可以包括一种或其组合的C5-C9醇。 在某些形式中,该方法可以用碳质材料中的基本上所有碳转化为流体产物来实施。 而且,在一些形式中,流体产品可以基本上不形成炭黑来制备。 各种形式的流体产品可以直接用作燃料或用作制备商品化学品的试剂,而不需要分离流体产物组分。
摘要:
This invention relates to a mesoporous carbon supported copper based catalyst comprising mesoporous carbon, a copper component and an auxiliary element supported on said mesoporous carbon, production and use thereof. The catalyst is cheap in cost, friendly to the environment, and satisfactory in high temperature resistance to sintering, with a highly improved and a relatively stable catalytic activity.
摘要:
The disclosure provides a photocatalyst material and a method for fabricating the same. The photocatalyst material includes a zinc oxide material doped with metal, wherein the zinc oxide material has a lattice structure including a plurality of defects. A part of the defects are filled with a metal,
摘要:
A process for hydrogenating acetic acid to form of ethyl acetate and mixtures of ethyl acetate and ethanol. The hydrogenation is done in the presence of catalyst, preferably on a support that optionally includes a support modifier.
摘要:
The present disclosure provides a catalyst for oxidative dehydrogenation of butene to butadiene, comprising at least one compound of formula ZnaAlbMcFeeOf.Z(α-Fe2O3), wherein M is at least one element chosen from Be, Mg, Ca, Sr, Mn, Ba, Cu, Co, and Ni, Z represents the percentage by weight of α-Fe2O3 in the catalyst and ranges from 10% to 70%. Also provided herein is a process of preparing said catalyst and the use of said catalyst in an oxidative dehydrogenation of butene to butadiene processes.
摘要翻译:本公开内容提供了一种用于将丁烯氧化脱氢成丁二烯的催化剂,其包含至少一种式ZnaAlbMcFeeOf.Z(α-Fe2O3)化合物,其中M为选自Be,Mg,Ca,Sr,Mn,Ba ,Cu,Co和Ni中,Z表示催化剂中α-Fe 2 O 3的重量百分数,为10〜70%。 本文还提供了制备所述催化剂的方法和所述催化剂在丁烯到丁二烯过程的氧化脱氢中的用途。
摘要:
A simple, room-temperature method of producing CuO-doped zinc oxide nanoparticles was established by reacting zinc nitrate hexahydrate, copper nitrate trihydrate and cyclohexylamine (CHA) at room temperature. These nanoparticles may be used for photocatalytic degradation of cyanide in aqueous solutions. The degradation of cyanide is effective because electrons transfer from the p-type copper oxide to the n-type zinc oxide.
摘要:
The present invention relates to a method for producing a cyclic compound that has high selectivity, high yield, and stability over a long period of time depending on a metal content ratio of a catalyst, specifically a lactone compound or a heterocyclic compound including oxygen, which includes hydrogenating an organic acid, organic acid ester, or a mixture of the organic acid and organic acid ester, which are having 4 to 6 carbon atoms, by using a selective hydrogenated catalyst.