摘要:
Disclosed is a catalyst capable of producing an olefin from an alkyl halide, the catalyst comprising a silicoaluminophosphate (SAPO) having a chabazite zeolite structure with the following chemical composition (SixAlyPz)O2, where x, y, and z represent the mole fractions of silicon, aluminum, and phosphorus, respectively, present as tetrahedral oxides, x is 0.01 to 0.30 and the sum of x + y + z is 1, and where the catalyst comprises silicon tetrahedral oxides that are connected with three or less aluminum tetrahedral oxide as shown by 29Si magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy peak(s) with peak(s) maxima between -93 ppm and -115 ppm.
摘要翻译:公开了能够由烷基卤生产烯烃的催化剂,所述催化剂包含具有以下化学组成(SixAlyPz)O 2的菱沸石沸石结构的硅铝磷酸盐(SAPO),其中x,y和z代表硅的摩尔分数 ,铝和磷,分别以四面体氧化物存在,x为0.01至0.30,x + y + z之和为1,并且其中催化剂包含如图所示与三个或更少的铝四面体氧化物连接的硅四面体氧化物 通过具有在-93ppm和-115ppm之间的峰值最大值的29Si魔角旋转(MAS)核磁共振(NMR)光谱峰来确定。
摘要:
Disclosed is a catalyst capable of producing an olefin from an alkyl halide, the catalyst comprising a silicoaluminophosphate (SAPO) having a chabazite zeolite structure with the following chemical composition (Si x Al y P z )O 2 , where x, y, and z represent the mole fractions of silicon, aluminum, and phosphorus, respectively, present as tetrahedral oxides, x is 0.01 to 0.30 and the sum of x + y + z is 1, and where the catalyst comprises silicon tetrahedral oxides that are connected with three or less aluminum tetrahedral oxide as shown by 29 Si magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy peak(s) with peak(s) maxima between -93 ppm and -115 ppm.
摘要翻译:公开了一种能够由烷基卤化物生产烯烃的催化剂,该催化剂包含具有以下化学成分(SixAlyPz)O 2的菱沸石沸石结构的硅铝磷酸盐(SAPO),其中x,y和z表示硅的摩尔分数 ,铝和磷分别以四面体氧化物存在,x为0.01〜0.30,x + y + z的和为1,其中催化剂包含四面体氧化物,其与三个或更少的四面体氧化铝连接,如图所示 通过29Si魔角旋转(MAS)核磁共振(NMR)光谱峰(s),峰(s)最大值在-93ppm和-115ppm之间。
摘要:
A method for synthesizing an aluminophosphate based molecular sieve is described. The method may include the steps of: (a) preparing an aqueous mixture comprising water, a substituted hydrocarbon, and a 1-oxa-4-azacyclohexane derivative; (b) reacting the aqueous mixture; (c) obtaining a solution comprising an organo-1-oxa-4-azoniumcyclohexane compound; (d) forming a reaction mixture comprising reactive sources of Al, and P, and the solution; and (e) heating the reaction mixture to form the molecular sieve.
摘要:
提供一种SAPO-34分子筛及其合成方法,该分子筛无水化学组成为:mDIPA·(Si x Al y P z )O 2 ,其中,DIPA为二异丙胺,分布于分子筛笼及孔道中;m为每摩尔(Si x Al y P z )O 2 中二异丙胺的摩尔数,m=0.03-0.25;x、y、z分别表示Si、Al、P的摩尔分数,其范围分别是x=0.01-0.30,y=0.40-0.60,z=0.25-0.49,且x+y+z=1。该SAPO-34分子筛可应用在酸催化反应和含氧化合物转化制低碳烯烃反应中。
摘要:
A new family of crystalline microporous metallophosphates designated AlPO-59 has been synthesized. These metallophosphates are represented by the empirical formula R + r M m 2+ EP x Si y O z where R is an organoammonium cation such as the ETMA + , M is a framework metal alkaline earth or transition metal of valence 2+, and E is a trivalent framework element such as aluminum or gallium. The AlPO-59 compositions are characterized by a new unique ABC-6 net structure and compositions and have catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for separating at least one component.
摘要:
TThere is disclosed a microporous crystalline material having pore opening ranging from 3 to 5 Angstroms, where the material comprises a first metal chosen from alkali earth group, rare earth group, alkali group, or mixtures thereof, and a second metal chosen from iron, copper or mixtures thereof; and has a molar silica to alumina ratio (SAR) from 3 to 10. The microporous crystalline material disclosed herein may comprise a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings as exemplified with framework types defined by the Structure Commission of the International Zeolite Association having structural codes of CHA, LEV, AEI, AFT, AFX, EAB, ERI, KFI, SAT, TSC, and SAV. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material.
摘要:
A method including preparing a molecular sieve material in a first chamber; transferring the molecular sieve material from the first chamber to a second chamber comprising at least one support; in the second chamber, contacting the at least one support with the molecular sieve material under conditions that promote the crystallization of molecular sieve material on the at least one support; and synthesizing crystals of molecular sieve material on the at least one support. A system including a first chamber defining a volume sufficient to accommodate a volume of molecular sieve material, an inlet and an outlet; a heating element coupled to the first chamber; and a second chamber comprising a pair of inlets and defining a volume sufficient to accommodate a support.
摘要:
A method including preparing a molecular sieve material in a first chamber; transferring the molecular sieve material from the first chamber to a second chamber comprising at least one support; in the second chamber, contacting the at least one support with the molecular sieve material under conditions that promote the crystallization of molecular sieve material on the at least one support; and synthesizing crystals of molecular sieve material on the at least one support. A system including a first chamber defining a volume sufficient to accommodate a volume of molecular sieve material, an inlet and an outlet; a heating element coupled to the first chamber; and a second chamber comprising a pair of inlets and defining a volume sufficient to accommodate a support.