A process for producing an eggshell catalyst, comprising the coating of the outer surface of a geometric shaped support body with a catalytically active multielement oxide or a powder P, wherein the powder P, after being coated, is converted by thermal treatment to a catalytically active multielement oxide, and one or more liquid binders, wherein the coating is conducted in a horizontal mixer and the Froude number during the coating in the horizontal mixer is from 0.0160 to 0.1200.

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.

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.

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.

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.

A catalyst material includes molybdenum (Mo): vanadium (V). the molar ratio of Mo:V being between 1:0.12 and 1:0.49; tellurium (Te), the molar ratio of Mo:Te being between 1:0.01 and 1:0.30; niobium (Nb), the molar ratio of Mo:Nb being between 1:0.01 and 1:0.30; and beryllium (Be), the molar ratio of Mo:Be being from 1:1 to 1:50.

The present invention relates to a novel supramolecular self-assembly, a carbon nitride and a photocatalyst using same, and a manufacturing method therefor. The present invention can provide, by using a supramolecular self-assembly, a carbon nitride having a high NC?N bonding ratio, a photocatalyst having excellent photocatalytic activity under visible light, and a manufacturing method therefor, the supramolecular self-assembly comprising: a plurality of complex units formed by hydrogen bonding two or more nitrogen-containing compounds to each other; and linker units connecting the plurality of complex units by hydrogen bonds, wherein the nitrogen-containing compounds and the linker units are each independently a NH group and capable of hydrogen bonding with the NH group, and the supramolecular self-assembly contains one or more heteroatoms selected from the group consisting of N, S, and O.

A zirconia-based porous body including an oxide of a rare earth element, in which when a pore volume in a pore distribution range of 30 nm or more and 200 nm or less after heating at 1150? C. for 12 hours under atmospheric pressure is defined as pore volume A and a pore volume in a pore distribution range of 30 nm or more and 200 nm or less before heating is defined as pore volume B, the pore volume A is 0.10 ml/g or more and 0.40 ml/g or less, and a pore volume retention ratio X in a pore distribution range of 30 nm or more and 200 nm or less represented by a formula [[(pore volume A)/(pore volume B)]?100] is 25% or more and 95% or less.

Bulk catalysts comprised of nickel, molybdenum, tungsten and titanium and methods for synthesizing bulk catalysts are provided. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.