Abstract: Ethylene is oligomerized with a catalyst in which nickel is supported on a support containing silica and alumina. The catalyst has little deterioration over long periods and affords oligomers with high productivity. The ethylene oligomerization catalyst includes a support and a nickel compound supported on the support, the support including silica and alumina, and the amount of nickel supported is in the range of 0.0001 to 1 wt % based on the weight of the support, and the molar ratio of silica to alumina in the support (SiO2/Al2O3) is in the range of 100 to 2000. In a process of the invention, ethylene is oligomerized with use of the catalyst.

Abstract: The invention provides a process for producing an unsaturated hydrocarbon by dehydrogenating a hydrocarbon into a corresponding unsaturated hydrocarbon with use of a nontoxic catalyst having a long catalytic life. The process for producing unsaturated hydrocarbons includes a step of dehydrogenating a hydrocarbon into a corresponding unsaturated hydrocarbon by contacting the hydrocarbon with a catalyst A that is obtained by supporting zinc and a Group VIIIA metal on a silicate obtained by removing at least part of the boron atoms from a borosilicate.

Abstract: The invention provides methods for converting hydrocarbons as starting material by industrial fixed-bed reaction processes with a zeolite shaped catalyst which has a low content of inorganic binder and a high pore volume and which shows high catalytic activity, long catalyst life and high crushing strength. A zeolite shaped catalyst used in the methods of the invention includes zeolite and an inorganic binder and is obtained by kneading zeolite, a starting material of an inorganic binder, shaping auxiliary(ies), organic polymer particles having an average diameter of 0.1 to 6 ?m and water into a kneaded product, and extruding, drying and calcining the kneaded product; and the zeolite shaped catalyst has a zeolite component content of not less than 60 wt % relative to the total weight, a pore volume of 0.4 to 1.0 ml/g, a half-volume pore diameter of 80 to 500 nm and a crushing strength of not less than 0.9 kg.

Abstract: Ethylene is oligomerized with a catalyst in which nickel is supported on a support containing silica and alumina. The catalyst has little deterioration over long periods and affords oligomers with high productivity. The ethylene oligomerization catalyst includes a support and a nickel compound supported on the support, the support including silica and alumina, and the amount of nickel supported is in the range of 0.0001 to 1 wt % based on the weight of the support, and the molar ratio of silica to alumina in the support (SiO2/Al2O3) is in the range of 100 to 2000. In a process of the invention, ethylene is oligomerized with use of the catalyst.

Abstract: The invention provides methods for converting hydrocarbons as starting material by industrial fixed-bed reaction processes with a zeolite shaped catalyst which has a low content of inorganic binder and a high pore volume and which shows high catalytic activity, long catalyst life and high crushing strength. A zeolite shaped catalyst used in the methods of the invention includes zeolite and an inorganic binder and is obtained by kneading zeolite, a starting material of an inorganic binder, shaping auxiliary(ies), organic polymer particles having an average diameter of 0.1 to 6 ?m and water into a kneaded product, and extruding, drying and calcining the kneaded product; and the zeolite shaped catalyst has a zeolite component content of not less than 60 wt % relative to the total weight, a pore volume of 0.4 to 1.0 ml/g, a half-volume pore diameter of 80 to 500 nm and a crushing strength of not less than 0.9 kg.