Disclosed is a method of synthesizing a molecular sieve of MWW framework type, and molecular sieves so synthesized. The method comprises preparing a synthesis mixture for forming a molecular sieve of MWW framework type, said synthesis mixture comprising water, a silicon source, a source of a trivalent element X, a structure directing agent R, a source of alkali or alkaline earth metal cation M, and a source of poly(diallyldimethyl ammonium) cation (PDDA).

A method of forming a batch of porous catalytic carrier filaments may include providing a precursor mixture, forcing the precursor mixture at a fixed rate through an orifice and then through a multiplicity of perforations in a belt, where the belt moves across and in tight registry with said orifice to form a batch of precursor catalytic carrier filaments, drying the batch of precursor porous catalytic carrier filaments to form the batch of porous catalytic carrier filaments, and firing (i.e. calcining) the batch of greenware porous catalytic carrier filaments to form the batch of porous catalytic carrier filaments. The batch of porous catalytic carrier filaments may have an average pore volume of at least about 0.1 cm.sup.3/g.

A method for selective hydrogenation of a C2 steam cracking fraction comprising acetylene, in the presence of a catalyst comprising an active phase based on at least one group VIII metal and a support provided in the form of a ceramic or metal monolith, characterized in that said support comprises a number of channels per unit length, CPSI, of between 300 and 1200, and in that the active phase is provided in the form of a layer on the walls of said support, the thickness of said layer of active phase being between 30 m and 150 m.

A nanofibrous catalyst for in the electrolyzer and methods of making the catalyst. The catalysts are composed of highly porous transition metal carbonitrides, metal oxides or perovskites derived from the metal-organic frameworks and integrated into a 3D porous nano-network electrode architecture. The catalysts are low-cost, highly active toward OER, with excellent conductivity yet resistant to the oxidation under high potential operable under both acidic and alkaline environments.

Disclosed herein is a YNU-5 zeolite and/or a phosphorus modified YNU-5 zeolite, methods of their preparation, and methods of their use in hydrocarbon conversion processes, e.g., as part of a catalyst component and/or as part of a catalyst composition. Catalyst components with YNU-5 zeolite and/or with phosphorus modified YNU-5 zeolites, their methods of preparation, and their methods of use suitable for petroleum refining applications (e.g., hydrocarbon conversion processes such as fluid catalytic cracking and hydrocracking) are described herein. Also disclosed herein are catalyst compositions, which include YNU-5 zeolites and/or phosphorus modified YNU-5 zeolites and catalyst components thereof along with at least one additional catalyst component.

The present invention relates to a SCR catalytic article, comprising a substrate and a copper-containing small pore zeolite, having a crystal structure characterized by a decrease of unit cell volume upon sulfurization and desulfurization of less than ?.sup.3 as determined by an X-ray powder diffraction, wherein the sulfurization and desulfurization are carried out in accordance with the processes as described in the specification, and to an exhaust treatment system comprising the same. The present invention also relates to a method for determining whether a metal-promoted small pore zeolite is resistant to irreversible sulfur poisoning and a method for evaluating whether a metal-promoted small pore zeolite is qualified for resistance to irreversible sulfur poisoning.

Catalysts and methods for use in conversion of glycerides and free fatty acids to biodiesel are described. A batch or continuous process may be used with the catalysts for transesterification of triglycerides with an alkyl alcohol to produce corresponding mono carboxylic acid esters and glycerol in high yields and purity. Similarly, alkyl and aryl carboxylic acids and free fatty acids are also converted to corresponding alkyl esters. Catalysts are capable of simultaneous esterification and transesterification under same process conditions. The described catalysts are thermostable, long lasting, and highly active.

A catalyst composition for hydrogenating 4,4-methylenedianiline derivatives is provided. The catalyst composition includes a carrier including aluminum oxide and magnesium oxide, a rhodium-ruthenium active layer loaded on the surface of the carrier, and a solvent including an organic amine. The weight percentage of magnesium oxide in the carrier is between 12% and 30%. A method for preparing 4,4-methylene bis(cyclohexylamine) derivatives using the catalyst composition is also provided.

Provided is a catalyst precursor containing a Keggin-type heteropolyacid used for the production of an ,-unsaturated carboxylic acid by oxidation of an ,-unsaturated aldehyde.

The present invention relates to a process for preparing a zeolite ZSM-5 presenting a Si/Al molar ratio comprised between 2 and 8, preferably between 3 and 8, comprising the following steps: a) mixing at least one silicon source, at least one aluminum source, at least one organic template and at least one aqueous solvent, in order to obtain a synthesis mixture in solution or gel form; b) ageing the mixture obtained in step a) at a temperature of between 20? C. and 200? C. during at least 30 minutes; and d) crystallizing the resulting mixture during at least 24 hours, wherein a step c) of adding wood lignin or oxidized wood lignin to the mixture is performed after step a) or after step b). It also relates to a zeolite which is obtainable by such a process, and to its use.