A ZSM-23 zeolite and a process for preparing the same and use thereof are provided. The total acid amount of the ZSM-23 zeolite is 0.05-0.25 mmol/g, preferably 0.06-0.22 mmol/g, more preferably 0.06-0.20 mmol/g. The strong acid content of the ZSM-23 zeolite is 5-33%, preferably 7-33%, more preferably 9-33%, or further preferably 7-31%, further more preferably 10-28% of the total acid amount. The strong acid refers to an acid having a desorption temperature of 350 C. or higher in an NH3 temperature programmed desorption (NH3-TPD). The ZSM-23 zeolite has a low strong acid content.

The present disclosure is directed to a method of manufacture of low silica zeolite having MFI framework, such as ZSM-5. A sol-gel formulation includes a water-soluble fraction of ODSO as an additional component. The resulting products include low silica zeolite having MFI framework, whereas in the absence of the ODSO, the resulting products are zeolite impurities including analcime.

Provided is a methanation catalyst processing method capable of suppressing degradation of a catalyst performance. A methanation catalyst processing method of the present disclosure includes oxidizing nickel through a heat treatment of a methanation catalyst by supplying an oxygen gas containing oxygen to a reactor, the reactor housing the methanation catalyst containing the nickel as a catalyst component. In the oxidizing, the oxygen gas is supplied to the reactor such that the oxygen is supplied to 1 g of the methanation catalyst at a supply rate in a range of from 0.0213 mmol-O.sub.2/sec.Math.g-cat. to 0.0638 mmol-O.sub.2/sec.Math.g-cat., and a time period of the heat treatment of the methanation catalyst by supplying the oxygen gas to the reactor is set to 30 minutes or more.

A process of producing a mesoporous beta zeolite includes mixing a crystalline beta zeolite with one or more solvents, cetyltrimethylammonium bromide, and metal hydroxide to produce a solution, heating the solution at a temperature of from 50? C. to 150? C. to convert the crystalline beta zeolite to a non-crystalline material with reduced silica content relative to the crystalline beta zeolite, cooling the solution to a temperature of from 25? C. to 40? C., adjusting the pH of the solution to from 8 to 10 by adding an acid, and aging the solution at a temperature of from 50? C. to 150? C. for a time period sufficient to crystalize the non-crystalline material to produce beta zeolite particles.

A hydrocarbon reforming catalyst for producing a synthesis gas containing hydrogen and carbon monoxide from a hydrocarbon-based gas, the hydrocarbon reforming catalyst containing a complex oxide having a perovskite structure including at least Ba, Zr, and Ru; and a hydrocarbon reforming apparatus that includes the hydrocarbon-reforming catalyst.

This disclosure relates to an aluminogermanosilicate molecular sieve, designated as SSZ-124, methods for making the same, and uses thereof.

An object of the present invention is to provide an exhaust gas purifying catalyst composition and an exhaust gas purifying catalyst, each of which has improved exhaust gas purification performance, and the present invention provides an exhaust gas purifying catalyst composition containing a Ce-based oxide particle, a CeZr-based composite oxide particle, and a noble metal element, wherein an amount of Ce in terms of CeO.sub.2 in the Ce-based oxide particle is 80% by mass or more based on the mass of the Ce-based oxide particle, wherein an amount of Ce in terms of CeO.sub.2 in the CeZr-based composite oxide particle is 5% by mass or more and 90% by mass or less based on the mass of the CeZr-based composite oxide particle, and wherein a crystallite size of CeO.sub.2 in the Ce-based oxide particle is 10 nm or more.

A method for preparing a supported noble metal catalyst, comprising: i) melting a noble metal sponge, a peroxide, and a support and/or a support precursor together; ii) dispersing the molten mixture in water; and iii) adjusting the pH to 4 to 10, thereby obtaining a supported noble metal catalyst. The method uses a noble metal sponge rather than an intermediate noble metal precursor, such as a noble metal nitrate salt, a noble metal halide salt, a halogenated noble metal acid, or a salt of the halogenated noble metal acid, for example, H.sub.3IrCl.sub.6, H.sub.2IrCl.sub.6, or IrCl.sub.3. The method does not produce any intermediate product, and does not use any chlorine-containing material, thereby avoiding contamination of the final catalyst by chlorine. The catalyst produced by the present invention has high activity, high surface area, and the RDE OER overpotential is less than 230 mV (at 10 mA cm.sup.2).

A catalyst comprising a barium niobate-based cubic perovskite structure where, Mg and Ca has been used to dope the niobium sites along with Fe, Ni, Co, Y, and Pr.

The present disclosure provides a honeycomb catalyst for catalytic oxidative degradation of VOCs prepared by an ultrasonic double-atomization process. The honeycomb catalyst is prepared by performing acidification and performing hydrothermal activation in alcoholic solution for honeycomb to modify a surface; dissolving soluble transition metal inorganic salt in deionized water to obtain precursor solution; performing ultrasonic atomization of the precursor solution and the precipitant solution in the ultrasonic atomization device into droplets; placing the modified honeycomb in a special quartz glass reactor, wherein the droplets enter into the quartz glass reactor through a pipeline to come into contact with a surface of a honeycomb hole and rapidly react to generate a hydroxide precursor on the surface of the honeycomb hole; drying the honeycomb into a drying box after performing the ultrasonic atomization, and calcining the honeycomb into a muffle furnace to obtain the honeycomb catalyst loaded with transition metal oxides.