摘要:
Ternary oxide phases, including copper oxide, which exhibit unusal electronic properties, have been determined to exhibit catalytic function for the oxidiation of carbon monoxide, the hydrogenation of ethylene and the cracking of hydrocarbons.
摘要:
Organic-swelled layered metal chalcogenides, e.g., titanometallates or silicotitanates, are intercalated with polymeric chalcogenide, e.g., polymeric silica by treatment with organic hydrolyzable polymeric chalcogenide precursor wherein hydrolysis to polymeric chalcogenide is enhanced by removal of organic hydrolysis by-products, during hydrolysis, e.g., by exposure of the reaction mixture to elevated temperatures.
摘要:
This invention relates to a process for producing a nonequilibrium distribution of methylamines by the catalyzed reaction of methanol and/or dimethyl ether with ammonia and by the catalytic reforming of a methylamine containing feedstock. One process selectively affords a reaction product enriched in mono and dimethylamines and low in trimethylamine, at high conversion of methanol or dimethylether. A variation of the process effects reforming a methylamine containing feedstock, optionally containing ammonia over a catalyst. The key to achieving this low TMA selectivity at high conversion resides in the use of a microporous zeolite, preferably chabazite, catalyst having a geometric selectivity index (GSI) less about 3, a shape selectivity index (SSI) greater than about 5 and a sorption capacity for 1-PrOH of at least 0.5 mmol/g.
摘要:
There is provided a catalyst comprising nickel supported on a pillared (e.g., silica pillared) vacancy titanate material. There is also provided a method for preparing this catalyst. This method may involve impregnating a pillared vacancy titanate material with a nickel nitrate solution. There is further provided a process for oligomerizing ethylene using this catalyst.
摘要:
A layered product comprises a layered metal oxide and pillars of an oxide of at least one element selected from Groups IB, IIB, IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIIA and VIIIA of the Periodic Table of the Elements separating the layers of the metal oxide. Each layer of the metal oxide has the general formula[M.sub.x .quadrature..sub.y Z.sub.2-(x+y) O.sub.4 ].sup.q-wherein M is at least one metal of valence n wherein n is an integer between 0 and 7, .quadrature. represents a vacancy site, Z is a tetravalent metal, and whereinq=4y-x(n-4)O
摘要:
There is provided a sulfated layered titanium oxide catalyst. Relatively long chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively long chain alkylating agent under alkylation reaction conditions in the presence of this sulfated layered material as alkylation catalyst. The layered material contains titanium oxide in the layers and oxide pillars separating the layers. The alkylation activity of the catalyst is increased by including sulfate ions in the layered material. This increased alkylation activity may be obtained by contacting the layered material with an aqueous solution of a sulfate compound such as sulfuric acid.
摘要:
Perovskite related materials of high thermal stability and surface area which contain interspathic polymeric chalcogenides such as polymeric silica are prepared by ion exchanging a layered metal oxide, such as layered titanium oxide, with organic cation, to spread the layers apart. A compound such as tetraethylorthosilicate, capable of forming a polymeric oxide, is thereafter introduced between the layers. The resulting product is treated to form polymeric oxide, e.g. by hydrolysis, to produce the layered oxide material. The resulting product may be employed as catalyst material in the conversion of organic compounds.
摘要:
A catalyst composition suitable for use in aromatization of non-aromatic hydrocarbons comprises a shape-selective crystalline slicate such as ZSM-5 and a titanometallate-type layered metal oxide comprising a layered metal oxide and pillars of an oxide of at least one element selected from Groups IB, IIB, IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIIA and VIIIA of the Periodic Table of the Elements separating the layers of the metal oxide where each layer of the metal oxide has the general formula[M.sub.x .sub.y Z.sub.2-(x+y) O.sub.4 ].sup.q-wherein M is at least one metal of valence n wherein is an integer between 0 and 7, represents a vacancy site, Z is a tetravalent metal, and whereinq=4y-x(n-4)0
摘要翻译:适合用于非芳族烃芳构化的催化剂组合物包括形状选择性晶体切片如ZSM-5和金属金属盐型层状金属氧化物,其包含层状金属氧化物和选自以下的至少一种元素的氧化物柱 分离金属氧化物层的元素周期表的IB,IIB,IIIA,IIIB,IVA,IVB,VA,VB,VIA,VIIA和VIIIA,其中每层金属氧化物具有通式[M x y Z2-(x + y)O4] q-其中M是价数n的至少一种金属,其中0和7之间的整数表示空位,Z是四价金属,并且其中q = 4y-x(n -4)0
摘要:
Layered chalcogenide materials of high thermal stability and surface area which contain interspathic polymeric chalcogenides such as polymeric silica are prepared by ion exchanging a layered metal oxide, such as layered titanium oxide, with organic cation, to spread the layers apart. A compound such as tetraethylorthosilicate, capable of forming a polymeric oxide, is thereafter introduced between the layers. The resulting product is treated to form polymeric oxide, e.g. by hydrolysis, to produce the layered oxide material. The resulting product may be employed as catalyst material in the conversion of organic compounds.
摘要:
Organic-swelled layered metal chalcogenides, e.g., titanometallates or silicotitanates, are intercalated with polymeric chalcogenide by plural treatments with hydrolyzable, electrically neutral polymeric chalcogenide precursor, e.g., tetraethylorthosilicate, to provide products of improved surface area.