There is described a hydroprocessing process of at least one gas oil cut having a weighted mean temperature (TMP) between 240 C. and 350 C. using a catalyst comprising at least one metal of the group VIB and/or at least one metal of the group VIII of the periodic classification and a support comprising an amorphous mesoporous alumina having a connectivity (Z) greater than 2.7, the hydroprocessing process operating at a temperature between 250 C. and 400 C., at a total pressure between 2 MPa and 10 MPa with a ratio of hydrogen volume to volume of hydrocarbon-containing feedstock between 100 and 800 litres per litre and at an Hourly Volume Rate (HVR) which is defined by the ratio of the volume flow rate of liquid hydrocarbon-containing feedstock to volume of catalyst fed into the reactor between 1 and 10 h.sup.1.

Disclosed are metal oxide catalysts, and methods for their use, that includes a bulk metal oxide catalyst composed of at least two metals and nesosilicate. The catalyst is capable of catalyzing the carbon dioxide reforming of methane to produce hydrogen and carbon monoxide.

Disclosed are metal oxide catalysts, and methods for their use, that includes a bulk metal oxide catalyst composed of at least two metals and nesosilicate. The catalyst is capable of catalyzing the carbon dioxide reforming of methane to produce hydrogen and carbon monoxide.

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided.

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided.

Homogeneous water oxidation catalysts (WOCs) for the oxidation of water to produce hydrogen ions and oxygen, and methods of making and using thereof are described herein. In a preferred embodiment, the WOC is a polyoxometalate WOC which is hydrolytically stable, oxidatively stable, and thermally stable. The WOC oxidized waters in the presence of an oxidant. The oxidant can be generated photochemically, using light, such as sunlight, or electrochemically using a positively biased electrode. The hydrogen ions are subsequently reduced to form hydrogen gas, for example, using a hydrogen evolution catalyst (HEC). The hydrogen gas can be used as a fuel in combustion reactions and/or in hydrogen fuel cells. The catalysts described herein exhibit higher turn over numbers, faster turn over frequencies, and/or higher oxygen yields than prior art catalysts.

Homogeneous water oxidation catalysts (WOCs) for the oxidation of water to produce hydrogen ions and oxygen, and methods of making and using thereof are described herein. In a preferred embodiment, the WOC is a polyoxometalate WOC which is hydrolytically stable, oxidatively stable, and thermally stable. The WOC oxidized waters in the presence of an oxidant. The oxidant can be generated photochemically, using light, such as sunlight, or electrochemically using a positively biased electrode. The hydrogen ions are subsequently reduced to form hydrogen gas, for example, using a hydrogen evolution catalyst (HEC). The hydrogen gas can be used as a fuel in combustion reactions and/or in hydrogen fuel cells. The catalysts described herein exhibit higher turn over numbers, faster turn over frequencies, and/or higher oxygen yields than prior art catalysts.

The present invention provides a catalyst for producing hydrogen and a preparing method thereof. The method includes the steps of adding a first metal source, a second metal source, a third metal source and a cerium source into a first organic solvent containing a surfactant to form a colloidal mixture, wherein a metal of the first metal source is a Group IIIB metal; a metal of the second metal source is selected from the group consisting of alkali metals, alkaline earth metals and Group IIIB metals, and a metal of the third metal source is a transition metal; calcining the colloidal mixture to form a metal solid solution; and allowing the metal solid solution to be carried on a carrier to obtain the catalyst. When the catalyst of the present invention is used for an ethanol oxidation reformation, the reaction temperature of the ethanol oxidation reformation can be significantly decreased. After the catalyst is used for long periods of time, the ethanol oxidation reformation still has high ethanol conversion ratio and hydrogen selection ratio.

The present invention provides a catalyst for producing hydrogen and a preparing method thereof. The method includes the steps of adding a first metal source, a second metal source, a third metal source and a cerium source into a first organic solvent containing a surfactant to form a colloidal mixture, wherein a metal of the first metal source is a Group IIIB metal; a metal of the second metal source is selected from the group consisting of alkali metals, alkaline earth metals and Group IIIB metals, and a metal of the third metal source is a transition metal; calcining the colloidal mixture to form a metal solid solution; and allowing the metal solid solution to be carried on a carrier to obtain the catalyst. When the catalyst of the present invention is used for an ethanol oxidation reformation, the reaction temperature of the ethanol oxidation reformation can be significantly decreased. After the catalyst is used for long periods of time, the ethanol oxidation reformation still has high ethanol conversion ratio and hydrogen selection ratio.

An exhaust gas-purifying catalyst includes a support and a catalytic metal supported thereby. The support includes a composite oxide represented by AO.xB.sub.2-C.sub.O.sub.3, wherein A represents at least one of an element having a valence of 1 and an element having a valence of 2, B represents an element having a valence of 3, C represents one or more elements selected from iridium, ruthenium, tantalum, niobium, molybdenum, and tungsten, x represents a numerical value of 1 to 6, and a represents a numerical value greater than 0 and less than 2. The catalytic metal includes one or more precious metals selected from rhodium, palladium, and platinum.