Patent classifications
C01B39/06
Molecular sieve SSZ-114, its synthesis and use
A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-114, is provided. SSZ-114 can be synthesized by treating an aluminogermanosilicate molecular sieve of CTH framework topology with water or an aqueous solution of a mineral acid under conditions sufficient to degermanate at least a portion of aluminogermanosilicate molecular sieve to form a degermanated molecular sieve and calcining the degermanated molecular sieve under conditions sufficient to convert the degermanated molecular sieve to SSZ-114. Molecular sieve SSZ-114 may be used in organic compound conversion reactions and/or sorptive processes.
Methods of making boronated zeolites and processes for cracking butene-containing streams
A method of making a boronated zeolite catalyst includes preparing an initial slurry comprising water, a shape selective zeolite, boric acid, and a weak acid selected from the group consisting of oxalic acid, citric acid, and oxalic acid and citric acid, hydrothermally treating the initial slurry at a temperature of from 70 C. to 90 C. to produce a hydrothermally treated slurry comprising dealuminated zeolite particles, adjusting the pH of the hydrothermally treated slurry to an intermediate pH of from 8 to 9 to produce a basic slurry, after adjusting the pH to the intermediate pH, hydrothermally treating the basic slurry at a temperature of from 70 C. to 90 C. to produce a boronated zeolite slurry, removing liquids from the boronated zeolite slurry to produce a boronated zeolite filtrate, and drying and calcining the boronated zeolite filtrate to produce the boronated zeolite catalyst.
Methods of making boronated zeolites and processes for cracking butene-containing streams
A method of making a boronated zeolite catalyst includes preparing an initial slurry comprising water, a shape selective zeolite, boric acid, and a weak acid selected from the group consisting of oxalic acid, citric acid, and oxalic acid and citric acid, hydrothermally treating the initial slurry at a temperature of from 70 C. to 90 C. to produce a hydrothermally treated slurry comprising dealuminated zeolite particles, adjusting the pH of the hydrothermally treated slurry to an intermediate pH of from 8 to 9 to produce a basic slurry, after adjusting the pH to the intermediate pH, hydrothermally treating the basic slurry at a temperature of from 70 C. to 90 C. to produce a boronated zeolite slurry, removing liquids from the boronated zeolite slurry to produce a boronated zeolite filtrate, and drying and calcining the boronated zeolite filtrate to produce the boronated zeolite catalyst.
Direct synthesis of a microporous aluminosilicate material having an AFX structure and comprising copper, and use of said material
The invention concerns a process for preparing a copper-comprising microporous aluminosilicate material with AFX structure, comprising at least the steps of mixing, in an aqueous medium, at least one aluminum source, at least one silicon source, at least one copper source, a TETA or TEPA organic complexing agent and a DABCO-C4 structuring agent, in order to obtain a gel, and hydrothermal treatment of said gel with stirring in order to obtain crystallization of said copper-comprising microporous aluminosilicate material with AFX structure.
Direct synthesis of a microporous aluminosilicate material having an AFX structure and comprising copper, and use of said material
The invention concerns a process for preparing a copper-comprising microporous aluminosilicate material with AFX structure, comprising at least the steps of mixing, in an aqueous medium, at least one aluminum source, at least one silicon source, at least one copper source, a TETA or TEPA organic complexing agent and a DABCO-C4 structuring agent, in order to obtain a gel, and hydrothermal treatment of said gel with stirring in order to obtain crystallization of said copper-comprising microporous aluminosilicate material with AFX structure.
Zeolite having specific ratio of divalent copper ions supported thereon, and preparation method therefor and catalyst composition comprising same
The present invention relates to zeolite containing Cu2+ () and Cu2+ () having different NO adsorption capacities loaded at a specific ratio, wherein the zeolite is chabazite (CHA)-type zeolite, particularly chabazite (CHA)-type zeolite loaded with divalent copper ions in which the NO adsorption area ratio of Cu2+ ()/Cu2+ () after exposure to NO (nitrogen oxide) for 180 sec is 80% or more. In addition, the present invention relates to a method of preparing zeolite that is ion-exchanged in a slurry state and to a catalyst including the specified chabazite (CHA)-type zeolite.
Zeolite having specific ratio of divalent copper ions supported thereon, and preparation method therefor and catalyst composition comprising same
The present invention relates to zeolite containing Cu2+ () and Cu2+ () having different NO adsorption capacities loaded at a specific ratio, wherein the zeolite is chabazite (CHA)-type zeolite, particularly chabazite (CHA)-type zeolite loaded with divalent copper ions in which the NO adsorption area ratio of Cu2+ ()/Cu2+ () after exposure to NO (nitrogen oxide) for 180 sec is 80% or more. In addition, the present invention relates to a method of preparing zeolite that is ion-exchanged in a slurry state and to a catalyst including the specified chabazite (CHA)-type zeolite.
Molecular sieve catalyst compositions, catalytic composites, systems, and methods
Described is a selective catalytic reduction catalyst comprising a zeolitic framework material of silicon and aluminum atoms, wherein a fraction of the silicon atoms are isomorphously substituted with a tetravalent metal. The catalyst can include a promoter metal such that the catalyst effectively promotes the reaction of ammonia with nitrogen oxides to form nitrogen and H.sub.2O selectively over a temperature range of 150 to 650 C. In another aspect, described is a selective catalytic reduction composite comprising an SCR catalyst material and an ammonia storage material comprising a transition metal having an oxidation state of IV. The SCR catalyst material promotes the reaction of ammonia with nitrogen oxides to form nitrogen and H.sub.2O selectively over a temperature range of 150 C. to 600 C., and the SCR catalyst material is effective to store ammonia at temperatures of 400 C. and above. A method for selectively reducing nitrogen oxides, and a method for simultaneously selectively reducing nitrogen oxide and storing ammonia are also described. Additionally, an exhaust gas treatment system is also described.
Catalytic aromatization
The invention relates to catalytic aromatization, e.g., for the conversion of non-aromatic hydrocarbon to higher-value aromatic hydrocarbon, to catalysts useful for such aromatization, to methods for making such catalysts, and to systems and apparatus for carrying out aromatization in the presence of the catalyst.
Catalytic aromatization
The invention relates to catalytic aromatization, e.g., for the conversion of non-aromatic hydrocarbon to higher-value aromatic hydrocarbon, to catalysts useful for such aromatization, to methods for making such catalysts, and to systems and apparatus for carrying out aromatization in the presence of the catalyst.