Processes for dehydrogenation of a hydrocarbon feedstock are described. The process can be run at lower H.sub.2/HC ratios and lower RITs while maintaining coke production at the same level as operation at higher H.sub.2/HC ratios and higher RITs without decreasing the yield per pass. Acceptable levels of coke were achieved when operating the process at low hydrogen to hydrocarbon molar ratio in the range of 0.01 to 0.40 and reactor inlet temperatures in the range of 500-645 C.

A process for preparing a zeolitic material having a framework structure type RTH and having a framework structure comprising a tetravalent element Y, a trivalent element X and oxygen, said process comprising (i) preparing a synthesis mixture comprising a zeolitic material having a framework structure type FAU and having a framework structure comprising the tetravalent element Y, the trivalent element X and oxygen, water, a source of a base, and an RTH framework structure type directing agent comprising a N-methyl-2, 6-dimethylpyridinium cation containing compound; (ii) subjecting the mixture obtained in (i) to hydrothermal crystallization conditions, obtaining the zeolitic material having a framework structure type RTH

The present disclosure relates to a composition that includes a first oxide having a phosphate, a ratio of Brnsted acid sites to Lewis acid sites between 0.05 and 1.00, and a total acidity between 50 mol/g and 300 mol/g, where the phosphate is at least one of a functional group covalently bonded to the first oxide and/or an anion ionically bonded to the first oxide.

The Invention describes photocatalytic reactor systems that employ fluidization of the photocatalyst. These systems are useful for performing chemical transformations on a chemical containing fluid, including for VOCs. Aspects of the invention include non-imaging optics, abrasion resistant coatings and photoreactor designs.

The present invention provides a porous metal-containing carbon-based material that is stable at high temperatures under aqueous conditions. The porous metal-containing carbon-based materials are particularly useful in catalytic applications. Also provided, are methods for making and using porous shaped metal-carbon products prepared from these materials.

Porous, extruded titania-based materials further comprising one or more quaternary ammonium compounds and/or prepared using one or more quaternary ammonium compounds, Fischer-Tropsch catalysts comprising them, uses of the foregoing, processes for making and using the same and products obtained from such processes.

Disclosed herein are catalyst compositions for removing formaldehyde, volatile organic compounds, and other pollutants from an air flow stream. In one embodiment, a catalyst composition comprises manganese oxide particles and rare earth metal catalyst particles.

A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.

Disclosed herein is a photocatalytic filter, which includes a plurality of cross-linked polymethyl methacrylate (PMMA)/ionic liquid (IL)/TiO.sub.2 nanocomposite pellets, and a photocatalytic vessel. The plurality of cross-linked PMMA/IL/TiO.sub.2 nanocomposite pellets is placed within the photocatalytic vessel. Each cross-linked PMMA/IL/TiO.sub.2 nanocomposite pellet includes a PMMA polymeric matrix, and a plurality of IL/TiO.sub.2 core-shell microspheres dispersed within the PMMA polymeric matrix. Moreover, each IL/TiO.sub.2 core-shell microsphere includes a core of IL and a shell of TiO.sub.2 nanoparticles.

A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 50% of catalyst volume.