摘要:
A synthetic zeolite material, designated zeolite EU-4, having a molar composition expressed by the formula:O to M.sub.2 O:aY.sub.2 O.sub.3 :at least 100 XO.sub.2 :0 to 35 H.sub.2 Owherein M is a monovalent cation or 1/n of a cation of valency n, a is from 0 to 9, X is silicon and/or germanium, Y is one or more of aluminum, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron, and H.sub.2 O is water of hydration additional to water notionally present when M is H, and having a defined X-ray diffraction pattern is prepared from an aqueous reaction mixture containing the oxide XO.sub.2, optionally the oxide Y.sub.2 O.sub.3 and an alkyltrimethylammonium or dialkyldimethylammonium compound.Zeolite EU-4 is a useful catalyst for methanol conversion and the like.
摘要翻译:具有由下式表示的摩尔组成的合成沸石材料EU-4:O至M 2 O:aY 2 O 3:至少100XO 2:0至35H 2 O,其中M是一价阳离子或1 / n的化合物阳离子 n,a为0至9,X为硅和/或锗,Y为铝,铁,铬,钒,钼,砷,锑,锰,镓或硼中的一种或多种,H 2 O为水合水 当M为H时,以含有氧化物XO2,任选的氧化物Y 2 O 3和烷基三甲基铵或二烷基二甲基铵化合物的水性反应混合物制备具有规定的X射线衍射图样的水。 沸石EU-4是甲醇转化等的有用催化剂。
摘要:
A process for converting C.sub.2 -C.sub.5 olefins into middle distillates at a temperature of 150.degree.-300.degree. C. over a catalyst which has been prepared by depositing at least 0.1% w Ni or Co by ion exchange onto a crystalline metal silicate having a ZSM-5 structure.
摘要:
A process is disclosed for the preparation of aromatic hydrocarbon mixtures having high benzene content by contacting non-aromatic organic compounds with certain crystalline non-aluminum silicates having a SiO.sub.2 /Fe.sub.2 O.sub.3 molar ratio of 100-300 and A SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of 135-1900.
摘要翻译:公开了通过使非芳族有机化合物与SiO 2 / Fe 2 O 3摩尔比为100-300和A SiO 2 / Al 2 O 3摩尔比为135-150的某些结晶非硅酸铝接触而制备具有高苯含量的芳族烃混合物的方法, 1900年。
摘要:
A process for denitrogenation of high nitrogen content hydrocarbon feeds comprising contacting the feed with hydrogen under denitrogenation conditions in the presence of a catalyst comprising an active metallic component comprising at least one metal having hydrogenation activity and at least one oxygenated phosphorus component and a support component comprising at least one non-zeolitic, porous refractory inorganic oxide matrix component and at least one crystalline molecular sieve zeolite component.
摘要:
A process is disclosed for the preparation of a hydrocarbon mixture by contacting in a first stage a feed mixture of hydrogen and carbon monoxide with an H.sub.2 /CO molar ratio of less than 1.0 with a trifunctional catalyst combination containing (a) at least one metal component having catalytic activity for conversions of a H.sub.2 /CO mixture into acyclic hydrocarbons, and/or acyclic oxygen-containing hydrocarbons, (b) at least one metal component for the conversion of an H.sub.2 O/CO mixture into an H.sub.2 /CO mixture, and (c) a certain crystalline silicate containing at least one trivalent metal selected from aluminum, iron, gallium, rhodium, chromium and scandium, wherein the molar ratio of the trivalent metal oxide to silica is less than 0.1; adjusting the H.sub.2 /CO molar to at least 1.5 by adding H.sub.2 O, if necessary; followed by contacting in a second stage at least the C.sub.2 - fraction of the reaction product from the first stage with a bifunctional catalyst combination containing at least one metal component with catalytic activity for converting an H.sub.2 /CO mixture into acyclic hydrocarbons and also at least one metal component with catalytic activity for converting an H.sub.2 O/CO mixture into an H.sub.2 /CO.sub.2 mixture.
摘要:
Sodium zinco/stanno/titano-silicate is synthesized by mixing a concentrated aqueous sodium zincate, stannate or titanate solution with a source of silica (e.g. powdered glass or sodium metasilicate solution) in the ratio 60 g sodium silicate to sodium zincate equivalent to 8.1 g zinc oxide, keeping the temperature at 40.degree. C. for 1/2 hour, diluting threefold with water of 20.degree. C., allowing a precipitate to form overnight, and filtering and drying the residue at 110.degree. C.The resulting sodium zincosilicate may be used in its own right as a water softener or may be converted by cation exchange into any other desired zincosilicate.
摘要:
A skeletal isomerization process for isomerizing olefins is described. The process includes the steps of feeding an olefin-containing feed to a reactor at a space velocity of 1-100 hr−1 for a first period of time at a first temperature, followed by discontinuing, or stopping, the olefin-containing feed for a second period of time while maintaining the reactor at a second temperature, before resuming the flow of the olefin-containing feed for a third period of time. The methods of this disclosure increase the yield of the skeletal isomers product while reducing the production of C5+ heavy olefins. Additionally, the methods of this disclosure can be applied to feeds containing iso-olefins (for the production of linear olefins) or linear olefins (for the production of iso-olefins).
摘要:
A catalyst washcoat is provided having a molecular sieve with a CHA crystal structure; about 0.5 to about 5.0 mol % phosphorus; and SiO2 and Al2O3 in a mole ratio of about 5 to about 40. The washcoat includes one or more promoters or stabilizers, and may be applied to a monolith substrate to produce a catalytically active article.
摘要:
A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones.
摘要:
Described is a selective catalytic reduction catalyst comprising an iron-promoted 8-ring small pore molecular sieve. Systems and methods for using these iron-promoted 8-ring small molecular sieves as catalysts in a variety of processes such as abating pollutants in exhaust gases and conversion processes are also described.