Disclosed are a heteropolyacid catalyst for producing gamma-valerolactone, which is supported on M-Beta zeolite (M=Sn, Ti, Zr or Hf), and a method for preparing the same and a method for manufacturing gamma-valerolactone using the catalyst. The catalyst has an effect of producing gamma-valerolactone from biomass-derived furfural at a high yield through a one-pot process.

Provided is a catalyst composition for treating exhaust gas comprising a blend of a first component and second component, wherein the first component is an aluminosilicate or ferrosilicate molecular sieve component wherein the molecular sieve is either in H+ form or is ion exchanged with one or more transition metals, and the second component is a vanadium oxide supported on a metal oxide support selected from alumina, titania, zirconia, cella, silica, and combinations thereof. Also provided are methods, systems, and catalytic articles incorporating or utilizing such catalyst blends.

A catalyst system comprises an activated solid support material and having, on its surface, one or more catalytic transition metal complexes.

To be able to produce an SCR catalyst (2), in particular one having a zeolite fraction (Z) as catalytically active fraction, in a reliable process and at the same time achieve good catalytic activity of the catalyst (2), an inorganic binder fraction (B) which is catalytically inactive in the starting state and has been treated to develop catalytic activity is mixed into a catalyst composition (4). The inorganic binder component for the binder fraction (B) is, in the starting state, preferably porous particles (10), in particular diatomaceous earth, which display mesoporosity. To effect catalytic activation, the individual particles (10) are either coated with a catalytically active layer (12) or transformed into a catalytically active zeolite (14) with maintenance of the mesoporosity.

A NO.sub.x absorber catalyst for treating an exhaust gas from a lean burn engine. The NO.sub.x absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.

Disclosed is a preparation method for a molecular sieve-multiple oxide composite integral extrusion type denitration catalyst, belonging to the technical fields of atmosphere pollution control and environment-friendly catalytic materials. The preparation method comprises: constructing an organic structure coating on the surface of a metal ion-exchanged molecular sieves and synchronously adding multiple oxide components, thus obtaining an ion-exchanged molecular sieve-multiple oxide composite denitration catalyst active component; and then mixing, kneading into paste, staling, carrying out integral extrusion forming, drying, and calcining, thus obtaining the integral extrusion type denitration catalyst. The molecular sieve-multiple oxide composite integral extraction type denitration catalyst has a denitration efficiency more than 80% at the temperature ranging from 250 C. to 420 C. in the presence of 10% steam and 500 ppm sulfuric dioxide. According to the present invention, the application field of metal-loaded molecular sieve denitration catalysts is widened, and thus the metal-loaded molecular sieve denitration catalysts can be widely applied to the flue gas denitration of stationary sources.

A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.

The present invention describes a process for hydrocracking at least one hydrocarbon feed in which at least 50% by weight of the compounds have an initial boiling point of more than 300 C. and a final boiling point of less than 540 C. using at least one catalyst comprising at least one metal from group VIB and/or at least one metal from group VIII of the periodic classification of the elements and a support comprising at least one zeolite containing at least one series of channels the opening of which is defined by a ring containing 12 oxygen atoms (12MR), and at least one binder, said support being prepared from a highly dispersible alumina gel, said hydrocracking process being operated at a temperature in the range 200 C. to 480 C., at a total pressure in the range 1 MPa to 25 MPa, with a ratio of the volume of hydrogen to the volume of hydrocarbon feed in the range 80 to 5000 litres per litre and with an hourly space velocity (HSV), defined as the ratio of the volume flow rate of liquid hydrocarbon feed to the volume of catalyst charged into the reactor, in the range 0.1 to 50 h.sup.1.

A hydrocracking catalyst comprising a zeolite beta having an average domain size from 800 to 1500 nm.sup.2; a zeolite USY; a catalyst support; and at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table. The zeolite beta has an OD acidity of 20 to 50 ?mol/g and the catalyst support comprises an amorphous silica aluminate and a second support material when the weight percentage content of the zeolite beta is less than the weight percentage of the zeolite USY, and, when the weight percentage content of the zeolite beta is greater than the weight percentage of the zeolite USY, the zeolite beta has an OD acidity of 20 to 400 ?mol/g, the zeolite beta content is from 0.5 to 10 wt. % and the zeolite USY has an ASDI between 0.05 and 0.12 with a corresponding zeolite USY content of from 0 to 5 wt. %. A process for hydrocracking a hydrocarbonaceous feedstock using the catalyst is also described as is a method for making the hydrocracking catalyst.

Embodiments of zeolite composite catalysts and methods of producing the zeolite composite catalysts are provided, where the methods comprise dissolving in an alkaline solution a catalyst precursor comprising at least one mesoporous zeolite while heating, stirring, or both to yield a dissolved zeolite solution, where the mesoporous zeolite has a molar ratio of SiO.sub.2/Al.sub.2O.sub.3 of at least 30, where the mesoporous zeolite comprises zeolite beta, adjusting the pH of the dissolved zeolite solution, aging the pH adjusted dissolved zeolite solution to yield solid zeolite composite from the dissolved zeolite solution, and calcining the solid zeolite composite to produce the zeolite composite catalyst, where the zeolite composite catalyst has a mesostructure comprising at least one disordered mesophase and at least one ordered mesophase, and where the zeolite composite catalyst has a surface area defined by the BrunauerEmmettTeller (BET) analysis of at least 600 m.sup.2/g.