The disclosure relates to a photocatalytic structure. The photocatalytic structure includes a carbon nanotube structure, a photocatalytic active layer coated on the carbon nanotube structure, and a metal layer including a plurality of nanoparticles located on the surface of the photocatalytic active layer. The carbon nanotube structure comprises a plurality of intersected carbon nanotubes and defines a plurality of openings, and the photocatalytic active layer is coated on the surface of the plurality of carbon nanotubes. The metal layer includes a plurality of nanoparticles located on the surface of the photocatalytic active layer.

A catalyst for the dehydrogenation of alkanes to alkenes comprises a catalytically active material supported on a carrier, wherein the catalytically active material is a metallic sulfide (MeS) comprising Fe, Co, Ni, Cu, Mo or W or any combination of two or more metals selected from Pb, Sn, Zn, Fe, Co, Ni, Cu, Mo and W. The catalyst is regenerated in several steps. The dehydrogenation is carried out at a temperature between 450 and 650 C. and a pressure from 0.9 bar below ambient pressure to 5 bar above ambient pressure.

A catalyst for the dehydrogenation of alkanes to alkenes comprises a catalytically active material supported on a carrier, wherein the catalytically active material is a metallic sulfide (MeS) comprising Fe, Co, Ni, Cu, Mo or W or any combination of two or more metals selected from Pb, Sn, Zn, Fe, Co, Ni, Cu, Mo and W. The catalyst is regenerated in several steps. The dehydrogenation is carried out at a temperature between 450 and 650 C. and a pressure from 0.9 bar below ambient pressure to 5 bar above ambient pressure.

The present disclosure relates to a catalyst for slurry phase hydrocracking of refinery residue and a process for its preparation. The present disclosure provides a very simple method for exfoliation of metal sulphide, and a process of that provides effective slurry phase hydrocracking of refinery residue with a high yield.

A method of making a multicomponent photocatalyst, includes inducing precipitation from a pre-cursor solution comprising a pre-cursor of a plasmonic material and a pre-cursor of a reactive component to form co-precipitated particles; collecting the co-precipitated particles; and annealing the co-precipitated particles to form the multicomponent photocatalyst comprising a reactive component optically, thermally, or electronically coupled to a plasmonic material.

According to an example aspect of the present invention, there is provided a synthesis method for producing furoic acid from a monoacid containing five carbons in the presence of pressure, heat, solvent and catalyst.

According to an example aspect of the present invention, there is provided a synthesis method for producing furoic acid from a monoacid containing five carbons in the presence of pressure, heat, solvent and catalyst.

Present subject matter provides a semiconductor nanocrystal comprises a core and a shell. The core is fabricated from a first semiconductor. The shell is fabricated from a second semiconductor. The optical cross section of the semiconductor nanocrystal is in a range of 10.sup.17 cm.sup.2-10.sup.12 cm.sup.2 in a 2-3 eV region. The core is less than 2 nanometers from an outer surface of the shell in at least one region of the semiconductor nanocrystal. Present subject matter also provides method for preparation of the semiconductor nanocrystals and method for photosynthesis of organic compounds.

A method of sulfurization of fluorine-containing carbon materials obtained by heating of carbon materials in contact with fluorocarbons or fluorine-containing derivatives thereof. Claimed method allows obtaining a wide range of fluorine-containing carbon materials with grafted sulfur functionalities. Claimed materials can be used in industry as novel acid-base catalysts with high stability in any aggressive medium. Another embodiment of the invention can be used for producing electrodes of metal-sulfide batteries or as a specific sorbent, metals or nanoparticles support.

Methods, catalysts, and systems for the production of 1,3-butadiene from a reaction mixture including ethylene and gaseous sulfur are described.