Disclosed herein is a fluid catalyst cracking (FCC) catalyst composition that includes a first component and a second component. The first component includes zeolite Y and a first matrix that includes a metal passivating constituent. The second component includes beta zeolite and a second matrix. Also disclosed herein are methods of preparing the FCC catalyst composition and method of using the FCC catalyst composition.

The present disclosure relates to a surface comprising a photocatalyst affixed thereupon via an adhesive layer and methods for affixing the photocatalyst to the surface via the adhesive layer. The present disclosure also provides a purifier comprising the photocatalyst affixed surface and a purifier system comprising such purifier.

The present disclosure relates to a surface comprising a photocatalyst affixed thereupon via an adhesive layer and methods for affixing the photocatalyst to the surface via the adhesive layer. The present disclosure also provides a purifier comprising the photocatalyst affixed surface and a purifier system comprising such purifier.

The present invention relates to novel methods for the preparation of 1,3-benzodioxole heterocyclic compounds of formula (I). The compounds are useful as PDE4 inhibitors. ##STR00001##

The present invention relates to novel methods for the preparation of 1,3-benzodioxole heterocyclic compounds of formula (I). The compounds are useful as PDE4 inhibitors. ##STR00001##

A nanomaterial catalyst comprising a partially crystalline porous magnesium silicate support and gold nanoparticles, the catalyst being useful for oxidative cracking of hydrocarbons, specifically the production of light olefins from propane. Methods of producing the nanomaterial catalyst as well as a method of oxidative cracking of a hydrocarbon to produce light olefins are provided.

A catalytic cracking additive, its preparation and application thereof are provided. The catalytic cracking additive contains 10-50 wt % of a modified β zeolite, 20-85 wt % of a clay and 5-35 wt % of a boron-containing binder, based on the total weight of the catalytic cracking additive. The modified β zeolite comprises 0.1-1 wt % of CuO and 1-15 wt % of P.sub.2O.sub.5, and has a micro-activity index of at least 58; the boron-containing binder comprises 70-97 wt % of Al.sub.2O.sub.3 and 3-30 wt % of B.sub.2O.sub.3, and has a pH value of 1.0-3.5. The catalytic cracking additive can significantly improve the yield of C4 olefins and the concentration of C4 olefins in liquefied gas.

A catalytic cracking additive, its preparation and application thereof are provided. The catalytic cracking additive contains 10-50 wt % of a modified β zeolite, 20-85 wt % of a clay and 5-35 wt % of a boron-containing binder, based on the total weight of the catalytic cracking additive. The modified β zeolite comprises 0.1-1 wt % of CuO and 1-15 wt % of P.sub.2O.sub.5, and has a micro-activity index of at least 58; the boron-containing binder comprises 70-97 wt % of Al.sub.2O.sub.3 and 3-30 wt % of B.sub.2O.sub.3, and has a pH value of 1.0-3.5. The catalytic cracking additive can significantly improve the yield of C4 olefins and the concentration of C4 olefins in liquefied gas.

The present invention pertains to a catalyst for use in the selective catalytic reduction (SCR) of nitrogen oxides comprising a monolithic substrate and a coating A, which comprises an oxidic metal carrier comprising an oxide of titanium and a catalytic metal oxide which comprises an oxide of vanadium wherein the mass ratio vanadium/titanium is 0.07 to 0.26.

The present invention pertains to a catalyst for use in the selective catalytic reduction (SCR) of nitrogen oxides comprising a monolithic substrate and a coating A, which comprises an oxidic metal carrier comprising an oxide of titanium and a catalytic metal oxide which comprises an oxide of vanadium wherein the mass ratio vanadium/titanium is 0.07 to 0.26.