摘要:
Provided are a novel synthesis technique for producing a metal promoted aluminosilicate zeolite have a small pore framework and methods of using the same.
摘要:
The invention relates to a process for preparing a hydrocracking catalyst, comprising (i) contacting a shaped body comprising a zeolite and a binder with an aqueous solution of a hydrogenation metal compound which is a complex or a salt of a hydrogenation metal to deposit the hydrogenation metal onto the shaped body, wherein the aqueous solution comprises an ammonium salt and (ii) calcining the shaped body obtained by step (i).
摘要:
Disclosed is a method for converting an alkyl halide to an olefin. The method can include contacting a zeolite catalyst having a chemical formula of M y/n „H (x-y) Al x Si (96-x) O 192 , where M is a metal cation having a valence of n under reaction conditions sufficient to produce an olefin hydrocarbon product comprising C 2 to C 4 olefins. M can include cations of metals from Groups IA, IIA, IIIA. IVB, VB, VIB VIIB, IB, IIB, IIIA or IVA, or any combination of metal cations thereof and y is 0.4 ≤ y ≤ 5.0.
摘要翻译:公开了将烷基卤转化为烯烃的方法。 该方法可以包括使化学式为M y / n“H(xy)Al x Si(96-x)O192的沸石催化剂接触,其中M是在足以产生 包括C2-C4烯烃的烯烃烃产物。 M可以包括IA,IIA,IIIA族金属的阳离子。 IVB,VB,VIB VIIB,IB,IIB,IIIA或IVA,或其金属阳离子的任何组合,y为0.4≤y≤5.0。
摘要:
Disclosed is a catalyst composition and its use in a process for the conversion of a feedstock containing Cs+ aromatic hydrocarbons to produce light aromatic products, comprising benzene, toluene and xylene. The catalyst composition comprises a mordenite zeolite synthesized from TEA or MTEA, optionally at least one first metal of Group 10 of the IUPAC Periodic Table, and optionally at least one second metal of Group 11 to 15 of the IUPAC Periodic Table, wherein said mordenite zeolite has a mesopore surface area of greater than 30 m 2 /g and said mordenite zeolite comprises agglomerates composed of primary crystallites, wherein said primary crystallites have an average primary crystal size as measured by TEM of less than 80 nm and an aspect ratio of less than 2.
摘要:
The present invention relates to a process for the production of a zeolitic material having a BEA-type framework structure comprising YO 2 and X2O 3 , wherein said process comprises the steps of (1)preparing a mixture comprising one or more sources for YO 2 and one or more sources for X 2 O 3 ; (2)crystallizing the mixture obtained in step (1); (3)subjecting the zeolitic material having a BEA-type framework structure obtained in step (2) to an ion-exchange procedure with Cu; and (4) subjecting the Cu ion-exchanged zeolitic material obtained in step (3) to an ion-exchange procedure with Fe; wherein Y is a tetravalent element, and X is a trivalent element, wherein the mixture provided in step (1) and crystallized in step (2) further comprises seed crystals comprising one or more zeolitic materials having a BEA-type framework structure, and wherein the mixture provided in step (1) and crystallized in step (2) does not contain an organotemplate as a structure-directing agent, as well as to the zeolitic material having a BEA framework structure per se, and to its use, in particular in a method for the treatment of NO x by selective catalytic reduction (SCR).
摘要:
A method for forming a catalyst can comprise: heating a Ge-ZSM-5 zeolite powder at a temperature of 400 to 600C; ion-exchanging the heat-treated zeolite powder with an alkali metal and impregnating the heat-treated zeolite powder with noble metal; heating the ion-exchanged, impregnated zeolite powder to a temperature of 250 to 350C; mixing the second heat-treated zeolite powder with a solid silica binder and a colloidal silica binder to form a mixture, wherein if the solid silica has a purity of less than or equal to 66 wt% of silica oxide based on the total weight of the solid silica, then the mixture is free of an extrusion aide and the colloidal silica has a particle size of less than 20 nm as measured along a major axis; forming the mixture into a shaped body; and heating the shaped body to result in the catalyst.
摘要:
A method of preparing a crystalline STT-type zeolite, which has a mole ratio greater than about 15:1 of an oxide of a tetravalent element to an oxide of a trivalent element, is disclosed along with a gas treatment system that incorporates the STT-type zeolite and a process for treating a gas using the STT-type zeolite. The method generally comprises forming an aqueous reaction mixture comprising a source of an oxide of the tetravalent element, a source of an oxide of the trivalent element, a source of alkali metal, and an organic structure directing agent comprising N,N,N-trimethyl-1-adamantamonium hydroxide; maintaining the aqueous mixture under crystallization conditions sufficient to crystallize crystals of a STT-type zeolite; and recovering the STT-type zeolite crystals The STT-type zeolite crystals exhibit an x-ray diffraction pattern with 2 theta degree peaks at: 8.26, 8.58, 9.28, 9.54, 10.58, 14.52, 15.60, 16.43, 17.13, 17.74, 18.08, 18.46, 19.01, 19.70, 20.12, 20.38, 20.68, 21.10, 21.56, 22.20, 22.50, 22.78, 23.36, 23.76, 23.99, 24.54, 24.92, 25.16, 25.58, 25.80, 26.12, 26.94, 27.38, 27.92, 28.30, 28.60, 29.24, 29.48, 30.08, 30.64, 31.20, 31.46, 31.80, 32.02, 32.60, 33.60, and 34.43.