Provided here are nano-sized mesoporous zeolite compositions and the methods of synthesis and use of these compositions. These nano-sized mesoporous zeolite compositions are synthesized from a mixture of silicon source and an aluminum source fumed or colloidal silica with aluminum powder or aluminum oxide. Also provided are methods for hydrocracking a hydrocarbon feedstock by using catalysts containing the nano-sized mesoporous zeolite composition.

The present invention relates to a method for the preparation of a synthetic crystalline zeolite material, to said synthetic crystalline zeolite material, and to the uses of said method and said synthetic crystalline zeolite material in various applications.

A functional structural body that can realize a prolonged life time by suppressing the decrease in function and that can fulfill resource saving without requiring a complicated replacement operation is provided. A functional structural body includes a skeletal body of a porous structure composed of a zeolite-type compound; and at least one solid acid present in the skeletal body, the skeletal body has channels connecting with each other, and the solid acid is present at least in the channels of the skeletal body.

To provide a highly active structured catalyst for methanol reforming that suppresses the decline in catalytic function and has excellent catalytic function, and a methanol reforming device. A structured catalyst for methanol reforming, including: a support of a porous structure composed of a zeolite-type compound; and a catalytic substance present in the support, in which the support has channels communicating with each other, and the catalytic substance is present at least in the channels of the support.

Catalysts are disclosed having metal oxide support structures and acidic reaction sites. Those reaction sites may have multiple bromine atoms bound to an aluminum atom with that aluminum-bromine group having an associated hydrogen ion. Additional structural features of the reaction sites are dictated by the aluminum oxide based catalysts and a silicon oxide based catalyst selected.

Processes are provided for preparing molecular sieves for use as catalysts. The process involves preparing a synthesis mixture for the molecular sieve wherein the synthesis mixture includes a morphology modifier which may be selected from cationic surfactants having a single quaternary ammonium group comprising at least one hydrocarbyl group having at least 12 carbon atoms, nonionic surfactants, anionic surfactants, sugars, and combinations thereof.

Methods of forming mesoporous zeolites with tunable pore widths are provided. In some embodiments, the method includes mixing a silicon-containing material, an aluminum-containing material, and at least a quaternary amine to produce a zeolite precursor solution. The zeolite precursor solution is pre-crystallized at a pre-crystallization temperature of greater than 125 C. and autogenous pressure to form a pre-crystallized zeolite precursor solution and combined with an organosilane mesopore template to produce a zeolite precursor gel. The zeolite precursor gel is crystallized without a previous discrete functionalization step to produce a crystalline zeolite intermediate and the crystalline zeolite intermediate is calcined to produce the mesoporous zeolite. An organosilane mesopore template in accordance with

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is also provided, where R is an aliphatic, aromatic, or heteroatom-containing group.

Methods for producing lactams from oximes by performing a Beckmann rearrangement using a hierarchical porous aluminophosphate catalyst having interconnected microporous and mesoporous networks are provided. Exemplary catalysts include a plurality of weak Brnsted acid active sites, including silicon-containing aluminophosphates having the IZA framework code AFI, such as SAPO-5, CHA, such as SAPO-34, and FAU, such as SAPO-37.

A method of reducing nitrogen oxides in exhaust gas of an internal combustion engine by selective catalytic reduction (SCR) comprises contacting the exhaust gas also containing ammonia and oxygen with a catalytic converter comprising a catalyst (2) comprising at least one crystalline small-pore molecular sieve catalytically active component (Z.sub.M,I) having a maximum ring opening of eight tetrahedral basic building blocks, which crystalline small-pore molecular sieve catalytically active component (Z.sub.M,I) comprising mesopores.

The objective of the invention is to provide an MSE-type zeolite production method such that an MSE-type zeolite can be produced in a comparatively short heating time by using inexpensive tetraethylammonium ion. The production method of the present invention comprises steps of: (1) mixing a silica source, an alumina source, an alkali source, tetraethylammonium ion, and water in such a manner as to yield a reaction mixture of the composition represented by the molar ratios indicated below: SiO.sub.2/Al.sub.2O.sub.3=between 10 and 100 inclusive (Na.sub.2O+K.sub.2O)/SiO.sub.2=between 0.15 and 0.50 inclusive K.sub.2O/(Na.sub.2O+K.sub.2O)=between 0.05 and 0.7 inclusive TEA.sub.2O/SiO.sub.2=between 0.08 and 0.20 inclusive H.sub.2O/SiO.sub.2=between 5 and 50 inclusive; (2) using the MSE-type zeolite as a seed crystal, and adding this seed crystal to the mixture at a proportion of 5 to 30% by mass with respect to the silica component in the reaction mixture; and (3) heating, under hermetic seal at a temperature of 100 to 200 C., the reaction mixture whereto the seed crystal has been added.