Abstract: A method for manufacturing a hydrocarbon compound from carbon dioxide, said method including: (a) a step of preparing an absorption-conversion catalyst that includes an oxide carrier, a first component supported on the oxide carrier and including at least one type of metal selected from the group consisting of alkali metals and alkaline earth metals, and a second component supported on the oxide carrier and including at least one type of metal selected from the group consisting of Ni, Fe, Co, Cu, and Ru; (b) a step of bringing the absorption-conversion catalyst and a carbon dioxide-including gas into contact under higher pressure than atmospheric pressure, and causing the carbon dioxide to be stored in the absorption-conversion catalyst; and (c) a step of bringing the absorption-conversion catalyst that has the carbon dioxide stored therein and a reducing gas into contact under higher pressure than atmospheric pressure, and obtaining the hydrocarbon compound.

Abstract: The present invention provides an oxidation inhibitor for diesel that improves the oxidative stability thereof and a diesel fuel composition having an excellent oxidative stability. A diesel fuel composition excellent in oxidative stability and low-temperature fluidity is obtained by adding an oxidation inhibitor that contains a fatty acid methyl ester derived from palm, rapeseed or soybean oil and in which the contents of polyunsaturated and saturated fatty acid methyl esters are each specified.

Abstract: The purpose of the present invention is to provide a method for producing a high quality biodiesel fuel having excellent oxidation stability and few low-temperature deposits. This purpose can be achieved by the following: hydrogenating a biodiesel fuel so as to selectively convert unsaturated fatty acid monoglycerides and then removing fatty acid monoglycerides through precipitation; or using an adsorbent to further remove fatty acid monoglycerides to a high degree from the biodiesel fuel produced using the method mentioned above.

Abstract: An object of the present invention is to provide a method for hydrogenating a biodiesel fuel for producing a biodiesel fuel having an excellent oxidation stability and cold flow property. The present invention serves to produce a biodiesel fuel excellent in oxidation stability, by hydrogenating a biodiesel fuel with oxygen present in the reaction system in the presence of a catalyst containing at least one type of noble metal selected from metals of Groups 8 to 10 in the periodic table.

Abstract: An object of the present invention is to provide a method for hydrogenating a biodiesel fuel for producing a biodiesel fuel having an excellent oxidation stability and cold flow property. The present invention serves to produce a biodiesel fuel excellent in oxidation stability, by hydrogenating a biodiesel fuel with oxygen present in the reaction system in the presence of a catalyst containing at least one type of noble metal selected from metals of Groups 8 to 10 in the periodic table.

Abstract: To provide a catalyst for production of a biodiesel fuel, which is capable of producing a biodiesel fuel with high selectivity, at a high yield, and at a low cost even in the presence of a water content and a free fatty acid, and a biodiesel fuel production method using the catalyst. Use of a titanium-containing mesoporous silica containing Ti and Si as skeleton constituent elements and having a pore diameter of 5 nm or greater as a transesterification catalyst enables a biodiesel fuel to be produced with high selectivity at a high yield through transesterification between an oil and an alcohol.

Abstract: The purpose of the present invention is to provide a method for producing a high quality biodiesel fuel having excellent oxidation stability and few low-temperature deposits. This purpose can be achieved by the following: hydrogenating a biodiesel fuel so as to selectively convert unsaturated fatty acid monoglycerides and then removing fatty acid monoglycerides through precipitation; or using an adsorbent to further remove fatty acid monoglycerides to a high degree from the biodiesel fuel produced using the method mentioned above.

Abstract: [Problem] To provide a catalyst for production of a biodiesel fuel, which is capable of producing a biodiesel fuel with high selectivity, at a high yield, and at a low cost even in the presence of a water content and a free fatty acid, and a biodiesel fuel production method using the catalyst. [Solution] Use of a titanium-containing mesoporous silica containing Ti and Si as skeleton constituent elements and having a pore diameter of 5 nm or greater as a transesterification catalyst enables a biodiesel fuel to be produced with high selectivity at a high yield through transesterification between an oil and an alcohol.

Abstract: A preparation method of catalysts for Fischer-Tropsch synthesis comprises preparing a solution containing a chelate complex having a transition metal capable of hydrogenating carbon monoxide, allowing silica as a carrier to be impregnated with the solution, drying the silica carrier impregnated with the solution, and baking the silica carrier after the drying so as to permit the oxide of the transition metal to be supported by the silica carrier.