Abstract:
In an embodiment, a method for making a catalyst, comprises: forming a mixture comprising a germanium source, an alkali metal source, an aluminum source, and a silica source, wherein the mixture has a pH; adjusting the pH of the mixture to a value of greater than or equal to 9.5; crystallizing and calcining the mixture to form a zeolite; depositing platinum on the zeolite; and calcining the zeolite to form the final catalyst. The final catalyst is non-acidic and has an aluminum content of less than or equal to 0.75 wt % based on the total weight of the final catalyst excluding any binder and extrusion aide and a Si:Al2 mole ratio of greater than or equal to 125.
Abstract:
A method of making a catalyst comprises: mixing three or more catalytically active components with water to form an impregnating solution; contacting a support with the impregnating solution; impregnating the catalytically active components onto the support to form an impregnated support; and calcining the impregnated support to form a catalyst. Another method of making a catalyst comprises: co-impregnating a support with three or more catalytically active components in an impregnating solution to form an impregnated support; and calcining the impregnated support to form the catalyst.
Abstract:
In an embodiment, a photocatalyst for the generation of diatomic hydrogen from a hydrogen containing precursor under the influence of actinic radiation comprises: a semiconductor support of SrTiO3 and TiO2, wherein a molar ratio of SrTiO3 and TiO2 in the semiconductor support is at least 0.01; and a gold and palladium alloy on said semiconductor support. Included herein are embodiments of a photocatalyst system, methods of making diatomic hydrogen, and methods of making the photocatalyst.
Abstract:
The present disclosures and inventions relate to a method comprising: a) introducing a natural gas; b) reforming the natural gas; wherein the reforming step comprises contacting the natural gas with steam to produce a syngas; c) converting the syngas to a product mixture comprising at least one olefin and a byproduct comprising a paraffin and a gasoline; wherein the converting step comprises contacting the syngas with a Co/Mn catalyst; and d) converting the byproduct to syngas.
Abstract:
The invention is directed to foamed caps and closure seals comprising as one of the layers polyethylene foam. The polyethylene foam is obtained by foaming of low density polyethylene copolymer obtained by a high pressure polymerisation process in the presence of 1,4-butanediol dimethacrylate.
Abstract:
The present disclosures and inventions relate to a catalyst or catalyst composition and the methods of making and using the catalyst or catalyst composition. In one aspect, the present disclosure relates to a catalyst composition that includes a catalyst having the formula CA CB Ox and a catalyst support; a) CA is CoaMnbXd, wherein X comprises Si, Ti, Cu, Zns Pd, or La or a combination thereof; a ranges from 0.8 to 1.2; b ranges from 0.1 to 1; and d ranges from 0 to 0.5; and b) CB is NieCufMghSim, wherein e ranges from about 0.8 to 1.2; f ranges from 0 to 1; h ranges from 0 to 0.5; and m ranges from 0 to 0.5; wherein Ox is determined by the valence requirements of the other elements present, wherein in the catalyst support consists essentially of magnesia, alumina, silica, titanic, carbon, or zeolite, or a combination thereof; and wherein the catalyst composition converts synthesis gas to at least one olefin.
Abstract:
A metallocene complex according to formula 1 wherein M is a metal selected from lanthanides or transition metals from group 3, 4, 5, or 6, Q is an anionic ligand to M, k is the number of Q groups and equals the valence of M minus 2, X is a cyclic bridging group that is bonded to a carbon atom of the cyclopentadienyl ligand and to nitrogen, Z1, and Z4 are hydrogen or a hydrocarbon radical with 1-20 carbon atoms; adjacent substituents Z2 and Z3 and are connected to form an indenyl or tetrahydroindenyl ring system and R is hydrogen or a hydrocarbon radical with 1-20 carbon atoms. Also described is a composition comprising the metallocene complex, a process for the preparation of the complex, and a process for the polymerization of olefin polymers in the presence of the metallocene complex.
Abstract:
A method for recovering a dihydroxy aromatic compound and urea from a polycarbonate-containing composition comprising a polycarbonate and a phosphorus-containing flame retardant, comprising contacting the composition with ammonia in the presence of a swelling solvent for a time sufficient to depolymerize the polycarbonate producing a dihydroxy aromatic compound and urea.
Abstract:
A method of forming a dehydrogenation catalyst support is carried out by forming a mixture comprising a bayerite aluminum hydroxide (Al(OH)3) and water into a support material. The support material is particulized. The particulized support material is compressed to a pressure of at least 5,000 psig to form a shaped body. The shaped body is calcined in pure steam at a temperature of at least 750° C. for at least 0.25 hours to form a catalyst support having an average pore diameter of 200 Å or greater. The catalyst support can then be treated with a dehydrogenation catalyst component so that the catalyst support contains the dehydrogenation catalyst component to form a dehydrogenation catalyst that can then be used by contacting a hydrocarbon feed with the catalyst within a reactor in the presence of steam under dehydrogenation reaction conditions suitable to form dehydrogenated hydrocarbon products.