Abstract:
Described are catalyst compositions, catalytic articles, methods of manufacturing catalytic articles and exhaust gas treatment systems and methods that utilize the catalytic articles. The catalytic articles include a washcoat of platinum group metal on refractory oxide support particles, and further including a molecular sieve wherein greater than 90% of the molecular sieve particles have a particle size greater than 1 μm.
Abstract:
A solid phosphoric acid catalyst which, when gas-phase synthesizing trioxane from formaldehyde, results in production of trioxane at a high yield and at a high selection rate by markedly suppressing side reactions, reduces the adhesion of organic matter to the catalyst surface, and achieves a stable and long-term catalyst reaction. This solid phosphoric acid catalyst contains silicon phosphate oxide (SPO) obtained by sintering at a temperature of at least 200° C. a carrier material to which a phosphoric acid component has been added, and the total quantity of acid does not exceed 5 mmol per 1 g of solid phosphoric acid catalyst when calculated as acid quantity determined by NH3-TPD measurement.
Abstract:
Disclosed are hierarchically porous carbon materials with a plurality of discreet nanoparticles dispersed on their carbon phase. The materials possess a continuous network of pores that spans the porous material, permitting the flow of fluids into and through the material. The porous materials can be used as heterogeneous catalysts.
Abstract:
The invention relates to a CO oxidation promoter additive and a method of its preparation. The CO oxidation promoter additive is having improved apparent bulk density and attrition properties for use in hydrocarbon conversion during fluid catalytic cracking. The CO oxidation promoter additive has a better CO to CO2 conversion.
Abstract:
A catalyst for producing butadiene using n-butene as a raw material, a process for producing the same and a process for producing butadiene using the catalyst are provided, and specifically, a catalyst for producing butadiene by gas-phase contact oxidative dehydrogenation of n-butene, which is capable of stably producing butadiene in a high yield from the beginning of the reaction, a process for producing the same and a process for producing butadiene, in which the catalyst is a shaped catalyst containing a complex metal oxide having molybdenum as an essential ingredient, wherein the pore volume of macropores is 80% or more, more preferably 90% or more, based on the total pore volume, are provided.
Abstract:
A Fischer-Tropsch synthesis catalyst containing 10 to 30% by mass, as a metal atom, of metallic cobalt and/or cobalt oxide, based on the mass of the catalyst, supported on a carrier containing silica, in which the carrier has an average pore diameter of 8 to 25 nm and the metallic cobalt and/or cobalt oxide has an average crystallite diameter of not less than the average pore diameter of the carrier and less than 35 nm.
Abstract:
A nanostructured metal oxide composition comprising hydroxides or oxygen vacancies or both hydroxides and oxygen vacancies on its surface is described. A process for preparing the nanostructured metal oxide composition comprising hydroxides or oxygen vacancies or both hydroxides and oxygen vacancies on its surface, which hydroxides and oxygen vacancies can participate in chemical reactions, which composition is prepared by a method selected from the group of methods comprising: i) controlled thermally induced dehydroxylation of nanostructured metal hydroxide precursors; ii) thermochemical reaction of said nanostructured metal oxide with hydrogen gas; iii) vacuum thermal treatment of said nanostructured metal oxide; and iv) aliovalent doping with a lower oxidation state metal. A photocatalyst comprising a nanostructured metal oxide composition comprising an optimal loading of hydroxides or oxygen vacancies or both hydroxides and oxygen vacancies on its surface, which hydroxides and/or oxygen vacancies can participate in chemical or physical reactions.
Abstract:
The present disclosure provides a catalyst composition for conversion of biomass to crude bio oil. The composition comprises at least one metal compound, at least one support and at least one stabilizing/solubilizing agent. Also disclosed are processes for the preparation of catalyst composition, and hydrothermal conversion of biomass to crude bio oil.
Abstract:
The invention relates to pigments with a non-metallic substrate, wherein the pigments have at least one barrier layer that selectively absorbs light and/or electrons and at least one photocatalytically active layer, wherein the at least one barrier layer is arranged between the non-metallic substrate and the at least one photocatalytically active layer. The invention furthermore relates to a method for producing the pigments and to a coating agent.
Abstract:
A structurally promoted precipitated catalyst containing crystalline silica, at least one chemical promoter selected from the group consisting of alkali metals, and iron, the structurally promoted precipitated catalyst comprising maghemite and hematite catalytic phases, and exhibiting a main reduction peak temperature, as determined by TPR, in the range of from about 210° C. to about 350° C. A method of producing the structurally promoted precipitated catalyst is also provided.