The invention relates to a method of preparing titanium dioxide-coated nanostars. Titanium precursors are hydrolyzed into crystalline TiO.sub.2 polymorphs at low temperatures, allowing the delicate morphology of the nanostars to be preserved while maintaining their desirable photocatalytic properties.

A catalyst comprising a noble metal disposed on a support. The noble metal is present in an amount ranging from 0.1 wt % to 10 wt % relative to the total weight of the catalyst. The support comprises at least 50 wt % silicon carbide relative to the total weight of the support. The silicon carbide has a surface area of at least 5 m.sup.2/g. A method for preparing methyl methacrylate from methacrolein and methanol using the catalyst is also disclosed.

A catalyst comprising a noble metal disposed on a support. The noble metal is present in an amount ranging from 0.1 wt % to 10 wt % relative to the total weight of the catalyst. The support comprises at least 50 wt % silicon carbide relative to the total weight of the support. The silicon carbide has a surface area of at least 5 m.sup.2/g. A method for preparing methyl methacrylate from methacrolein and methanol using the catalyst is also disclosed.

A method for manufacturing a catalysis reactant having high efficiency catalysis for thermal reaction primarily includes: preparing a three-dimensional catalysis carrier; preparing at least one aqueous-phase nanometer metallic particle solution; soaking the catalysis carrier in a methanol solution containing a silane group compound and removing and subjecting the catalysis carrier to drying and freezing for surface modification; soaking the catalysis carrier in the aqueous-phase nanometer metallic particle solution and removing and subjecting the catalysis carrier to blow-drying to have the surface of the catalysis carrier combined with a first layer of nanometer metallic particles; soaking the catalysis carrier in a methanol solution containing 1,12-dodecaneamino to carry out surface modification and removing and subjecting the catalysis carrier to drying, followed by soaking in the aqueous-phase nanometer metallic particle solution and then blow-drying to have the surface of the catalysis carrier further combined with a second layer of nanometer metallic particles.

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 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 nanocomposite photocatalyst is provided. The nanocomposite photocatalyst contains carbon nitride particles, a polymer composite comprising a conducting polymer and a carbon nanomaterial, the polymer composite being disposed on the carbon nitride particles, and noble metal nanoparticles disposed on both the polymer composite and the carbon nitride particles. Also provided is a method of forming the nanocomposite photocatalyst and a method of photodegrading an organic pollutant in water using the nanocomposite photocatalyst and visible light irradiation.

A nanocomposite photocatalyst is provided. The nanocomposite photocatalyst contains carbon nitride particles, a polymer composite comprising a conducting polymer and a carbon nanomaterial, the polymer composite being disposed on the carbon nitride particles, and noble metal nanoparticles disposed on both the polymer composite and the carbon nitride particles. Also provided is a method of forming the nanocomposite photocatalyst and a method of photodegrading an organic pollutant in water using the nanocomposite photocatalyst and visible light irradiation.

The present disclosure provides catalyst compositions and processes for the conversion of low-cost short chain alkanes to high value liquid transportation fuels and chemicals. The present disclosure provides methods of making said catalyst compositions.

The present disclosure provides catalyst compositions and processes for the conversion of low-cost short chain alkanes to high value liquid transportation fuels and chemicals. The present disclosure provides methods of making said catalyst compositions.