A heterogeneous catalyst comprising a support and a noble metal, wherein said support comprises silicon, and wherein said catalyst comprises from 0.1 to 40 mol % titanium and from 0.1 to 10 mol % of at least one noble metal.

A heterogeneous catalyst comprising a support and a noble metal, wherein said support comprises silicon, and wherein said catalyst comprises from 0.1 to 40 mol % titanium and from 0.1 to 10 mol % of at least one noble metal.

Methods and apparatuses for highly sensitive detection of analytes using redox reactions. A library of heat reactions of analytes of interest with a variety of catalysts at a variety of temperatures is prepared. An array of sensors with low thermal mass heating elements is prepared, depositing the same or different catalysts, such as metal oxide catalysts that have multiple oxidation states, on each heating element. The low thermal mass heating elements are preferably not in thermal contact with a substrate, or a low mass substrate is used. The array is exposed to a sample at various temperatures. The sign and magnitude of the heat effect of the redox reaction of compounds in the sample or their decomposition products with each catalyst is measured and compared with the library. The catalysts and temperatures are chosen so that the desired analytes have a unique pattern of heat effect signs and magnitudes when reacted with those catalysts at those temperatures. The resulting detector is highly selective and sensitive to the analytes of interest.

Methods and apparatuses for highly sensitive detection of analytes using redox reactions. A library of heat reactions of analytes of interest with a variety of catalysts at a variety of temperatures is prepared. An array of sensors with low thermal mass heating elements is prepared, depositing the same or different catalysts, such as metal oxide catalysts that have multiple oxidation states, on each heating element. The low thermal mass heating elements are preferably not in thermal contact with a substrate, or a low mass substrate is used. The array is exposed to a sample at various temperatures. The sign and magnitude of the heat effect of the redox reaction of compounds in the sample or their decomposition products with each catalyst is measured and compared with the library. The catalysts and temperatures are chosen so that the desired analytes have a unique pattern of heat effect signs and magnitudes when reacted with those catalysts at those temperatures. The resulting detector is highly selective and sensitive to the analytes of interest.

Catalysts for oxidative esterification can be used, for example, fro converting (meth)acrolein to methyl (meth)acrylate. The catalysts are especially notable for high mechanical and chemical stability even over very long time periods, including activity and/or selectivity relatively in continuous operation in media having even a small water content.

Catalysts for oxidative esterification can be used, for example, fro converting (meth)acrolein to methyl (meth)acrylate. The catalysts are especially notable for high mechanical and chemical stability even over very long time periods, including activity and/or selectivity relatively in continuous operation in media having even a small water content.

The present invention relates to a catalyst composition comprising a gold nanoparticle superlattice embedded in hierarchical porous silica and a method for manufacturing the same. The catalyst composition comprising a gold nanoparticle superlattice embedded in hierarchical porous silica according to the present invention comprises micropores and mesopores in the superlattice, so that these pores are channelized to allow the rapid access of reactants to surfaces of gold nanoparticles, and the catalyst composition is very structurally stable and has excellent catalytic activity, and thus has an effect of exhibiting a CO conversion rate of 100% at room temperature.

A photocatalytically active particulate material includes a particle core of ZnS, particles of a nanoscale metal selected from Au, Ag, Pt, Pd, Cu or an alloy thereof loaded on the particle core, and a layer of Al2O3, SiO2, TiO2 or mixtures thereof on the loaded particle core.

A photocatalytically active particulate material includes a particle core of ZnS, particles of a nanoscale metal selected from Au, Ag, Pt, Pd, Cu or an alloy thereof loaded on the particle core, and a layer of Al2O3, SiO2, TiO2 or mixtures thereof on the loaded particle core.

Disclosed are a catalyst for preparing a synthetic gas through dry reforming, a method preparing the catalyst, and a method using the catalyst for preparing the synthetic gas. The catalyst may include: a support including regularly distributed mesopores; metal nanoparticles supported on the support; and a metal oxide coating layer coated on a surface of the support.