The present application provides a ZSM-35 molecular sieve and a preparation method thereof. The ZSM-35 molecular sieve is an aggregated ZSM-35 molecular sieve having a hierarchical macro-meso-microporous pore structure. Raw materials for the preparation method do not include an organic template agent and a crystal seed, and the preparation method includes the following steps: preparing a reactant gel where a molar ratio of SiO.sub.2, Al.sub.2O.sub.3, Na.sub.2O, K.sub.2O, oxygen-containing acid radical and H.sub.2O is (20-40):1.0:(1.5-2.0):(4.0-6.5):(1.0-4.0):(600-1200); sequentially performing an aging treatment and a crystallization treatment on the reactant gel, washing and drying a resulting synthetic product. The ZSM-35 molecular sieve provided by the present application may be obtained by synthesizing without using an organic template agent and crystal seed, and because it has a hierarchical pore structure, it is favorable for material diffusion and mass transfer.

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided.

Preparation of a catalyst comprising an oxide matrix and an active phase comprising nickel: a calcined porous aluminium oxide is prepared; the calcined porous aluminium oxide obtained is kneaded with a solution resulting from mixing one or more solution(s) of at least one nickel precursor and at least one solution of at least one organic compound which has at least one carboxylic acid function, or at least one alcohol function, or at least one ester function, or at least one amine function, or at least one amide function, in order to obtain a paste, wherein the mole ratio of said organic compound to the nickel element is between 0.01 and 5.0 mol/mol; the paste obtained is shaped; the shaped paste obtained is dried at a temperature of less than 250 C. in order to obtain a dried catalyst.

The present invention relates to a catalyst for producing olefins from dehydrogenation of alkane having 2 to 5 carbon atoms and a method for producing olefins using said catalyst, wherein said catalyst comprises a hierarchical zeolite nanosheet having a silica to alumina(SiO.sub.2/AI.sub.2O.sub.3) ratio more than 120 and group X metal(s) in a range of 0.3 to 5% by weight. The catalyst according to the conversion of precursor to yields and high olefins selectivity.

Process for the preparation of a catalyst and a catalyst comprising enhanced mesoporosity is provided herein. Thus, in one embodiment, provided is a particulate FCC catalyst comprising 2 to 50 wt % of one or more ultra stabilized high Si02/A1203 ratio large pore faujasite zeolite or a rare earth containing USY, 0 to 50 wt % of one or more rare-earth exchanged large pore faujasite zeolite, 0 to 30 wt % of small to medium pore size zeolites, 5 to 45 wt % quasi-crystalline boehmite 0 to 35 wt % microcrystalline boehmite, 0 to 25 wt % of a first silica, 2 to 30 wt % of a second silica, 0.1 to 10 wt % one or more rare earth components showiomg enhanced mesoporosity in the range of 6-40 nm, the numbering of the silica corresponding to their orders of introduction in the preparation process.

The present invention relates to an amorphous titanium stannate silicate with the general formula: M.sup.v+.sub.wTi.sub.xSi.sub.ySn.sub.zO.sub.2x+2y+2z+0.5vw, wherein M is proton, ammonium, a metal or a mixture of metals, wherein v is the valence of M being a positive integer, and wherein x, y, z and w are molar ratios: x is 1, y is from 0.01 to 99, z is from 0.01 to 99, and w is from 0.01 to 50. The described titanium stannate silicates are particularly useful in catalysis and adsorption.

Disclosed is a method for preparing 2,2-dipyridine and derivatives thereof. The method includes: using pyridine represented by formula I or a derivative thereof as a raw material to generate 2,2-dipyridine represented by formula II by performing dehydrogenative coupling under the action of a supported catalyst in the presence of additives, where R is H, C.sub.1-C.sub.2 alkyl, Cl, or Br. The method of the present invention features wide adaptability to raw materials, high atomic utilization rate, high catalyst activity, long service life, and fewer by-products.

The present invention relates to a new method for creating nanopores in single layer molybdenum disulfide (MoS.sub.2) nanosheets (NSs) by the electrospray deposition (ESD) of silver ions on a water suspension of the former. Electrospray deposited silver ions react with the MoS.sub.2 NSs at the liquid-air interface resulting in Ag.sub.2S nanoparticles (NPs) which goes into the solution leaving the NSs with holes of 3-5 nm diameter. Specific reaction with the S of MoS.sub.2 NSs leads to Mo-rich edges. Such Mo-rich defects are highly efficient for the generation of active oxygen species such as H.sub.2O.sub.2, under visible light, which causes efficient disinfection of water. The holey MoS.sub.2 NSs shows 10.sup.5 times higher efficiency in disinfection compared to normal MoS.sub.2 NSs. Developed a conceptual prototype and tested with multiple bacterial strains and a viral strain, demonstrating the utility of the method for practical applications.

An exhaust gas purification filter that suppresses an increase in pressure loss associated with the formation of a catalyst layer and is excellent in PM burning quality. The exhaust gas purification filter includes a base and a catalyst layer provided on the base. The catalyst layer contains a carrier and a metal catalyst. Large pores having a circle equivalent diameter greater than 5 m occupy, when an area of the catalyst layer is 100% in an electron microscope observation image of a cross section of the catalyst layer, 45% or more of the area.

This application discloses a mesoporous catalyst formed by combining a matrix precursor treated with a polyphosphate, and a metallic oxide treated with a cationic electrolyte. The combined treatment with the polyphosphate and cationic polyelectrolyte yields unexpected improvements in attrition resistance, while maintaining high overall pore volume, even as the ratio of meso pore volume to macro pore volume of the formed FCC catalyst increases.