A catalyst composition suitable for the ethanol reforming process at low temperature with enhanced stability on long term, comprises a noble metal, such as platinum or rhodium, and a transition non-noble metal, such as nickel or cobalt, supported by a carrier comprising, cerium, zirconium, optionally aluminium, supplemented with potassium. It is provided also a method for the stable production of hydrogen from an ethanol containing gas stream, comprising subjecting the gas stream to catalytic ethanol reforming as to form a rich H2 stream, using the catalyst as defined above.

A method for preparing a compound of formula RSH where R represents an alkyl group, by gas-phase catalytic reaction of hydrogen sulfide with a compound of formula ROH, in the presence of a solid catalyst, according to which method the reaction is performed in the presence of a catalyst which includes one or several pure or mixed rare-earth oxide(s), one or several pure or mixed rare-earth sulfide(s), or one or several pure or mixed rare-earth oxysulfide(s). When the rare earth is lanthanum, the catalyst is a mixed oxide of lanthanum and of at least one metal selected from rare earths or not and when the rare earth is cerium, the catalyst is supported on an alumina.

A method for preparing a compound of formula RSH where R represents an alkyl group, by gas-phase catalytic reaction of hydrogen sulfide with a compound of formula ROH, in the presence of a solid catalyst, according to which method the reaction is performed in the presence of a catalyst which includes one or several pure or mixed rare-earth oxide(s), one or several pure or mixed rare-earth sulfide(s), or one or several pure or mixed rare-earth oxysulfide(s). When the rare earth is lanthanum, the catalyst is a mixed oxide of lanthanum and of at least one metal selected from rare earths or not and when the rare earth is cerium, the catalyst is supported on an alumina.

There are provided an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, according to one embodiment of the invention, a catalyst is realized with a structure in which metal oxide is supported on a silica carrier, and thus, using mesopores useful for adsorption and desorption of gas, a high reaction surface area can be provided, and ultimately, ammoxidation of propylene can be increased.

There are provided an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, according to one embodiment of the invention, a catalyst is realized with a structure in which metal oxide is supported on a silica carrier, and thus, using mesopores useful for adsorption and desorption of gas, a high reaction surface area can be provided, and ultimately, ammoxidation of propylene can be increased.

A method of loading granules into reaction tubes of a vertical multitube reactor installed in a vertical direction by dropping the granules from above each of the reaction tubes in a state that a linear member is inserted and suspended in the reaction tube. The reaction tube has an effective length of 1000 mm or more. The linear member includes a small-diameter portion positioned on an upper side and a large-diameter portion continuously extending from the small-diameter portion. The small-diameter portion has an outer diameter (Ra) of 5.0 mm or less, and the large-diameter portion has an outer diameter (Rb) of 5.0 to 15.0 mm larger than the outer diameter (Ra). A length of the small-diameter portion from an upper end of the reaction tube is 10.0 mm or more. A distance between an upper surface of a granule loaded layer formed inside the reaction tube and a lower end of the linear member inserted in the reaction tube is 100 mm or more.

A method of loading granules into reaction tubes of a vertical multitube reactor installed in a vertical direction by dropping the granules from above each of the reaction tubes in a state that a linear member is inserted and suspended in the reaction tube. The reaction tube has an effective length of 1000 mm or more. The linear member includes a small-diameter portion positioned on an upper side and a large-diameter portion continuously extending from the small-diameter portion. The small-diameter portion has an outer diameter (Ra) of 5.0 mm or less, and the large-diameter portion has an outer diameter (Rb) of 5.0 to 15.0 mm larger than the outer diameter (Ra). A length of the small-diameter portion from an upper end of the reaction tube is 10.0 mm or more. A distance between an upper surface of a granule loaded layer formed inside the reaction tube and a lower end of the linear member inserted in the reaction tube is 100 mm or more.

The present invention refers to catalysts that are selective for the reaction of ODH of propane to propene. Said catalysts are potassium salts of the dodecatungstophosphate ion partially substituted with vanadium and niobium, or mixed oxides of W, V, and Nb, with a tungsten bronze structure, obtained by thermal decomposition of polyoxometalate salts with a Keggin structure.

The present invention refers to catalysts that are selective for the reaction of ODH of propane to propene. Said catalysts are potassium salts of the dodecatungstophosphate ion partially substituted with vanadium and niobium, or mixed oxides of W, V, and Nb, with a tungsten bronze structure, obtained by thermal decomposition of polyoxometalate salts with a Keggin structure.

Disclosed herein are catalyst devices for removing formaldehyde, volatile organic compounds, and other pollutants from an air flow stream, A catalyst device includes a housing, a solid substrate disposed within the housing, and a catalyst layer disposed on the substrate. The catalyst layer includes a base metal catalyst at a first mass percent and a rare earth metal catalyst at a second mass percent.