Abstract: The present disclosure relates to a hydrogen gas production method including: a first step of generating a mixed gas containing hydrogen and carbon dioxide from a hydrogen storage agent by dehydrogenation reaction using a catalyst in a reactor; a second step of purifying the generated mixed gas to acquire a gas having a high hydrogen concentration; a third step of separating a solution in the reactor into a solution enriched with the catalyst and a permeate using a separation membrane unit; and a fourth step of supplying the solution enriched with the catalyst to the reactor for reusing in the first step.

Abstract: The present invention relates to a method for producing a formic acid including, a first step of allowing carbon dioxide and hydrogen to react with each other in a solution containing a solvent and a catalyst dissolved in the solvent and in the presence of an amine insoluble in the solvent, and allowing a generated formic acid to adsorb to the amine, in which the catalyst contains at least one metal element selected from the group consisting of metal elements belonging to Groups 8, 9, and 10 of a periodic table and the amine is an amine immobilized on a solid.

Abstract: The purpose of the present invention is to provide a film which enables an oil to be held on a surface of an object over a long period and which makes it possible to reduce work costs and equipment construction costs. The film of the present invention includes a base material having a plurality of voids therein and an oil retained in the voids, wherein the voids on one surface of the base material have an average void diameter which is smaller than an average void diameter of the voids present near a thickness-direction center of the base material.

Abstract: The purpose of the present invention is to provide a product, in particular, a coating material capable of preventing icing and/or snow accretion. This product includes a first oil component, a second oil component, and a first resin precursor, which is a precursor for a resin component. The first resin precursor including the first and second oil components is cured to form an oil-containing resin layer including the first and second oil components and the resin component. The second oil component constitutes a low-temperature phase-separable oil component that may be phase-separated from the first oil component to exude from the oil-containing resin layer when a temperature decreases to a predetermined value or lower.

Abstract: The purpose of the present invention is to provide a sheet body having an improved function of preventing icing and/or snow accretion. At least included are a solid oil-containing resin layer containing an oil and an oil-permeable surface resin layer that has higher wear resistance than the oil-containing resin layer and is layered on one of surfaces of the oil-containing resin layer. The oil included in the oil-containing resin layer includes a low-temperature exuding oil component capable of exuding from the oil-containing resin layer when a temperature decreases to a predetermined value or lower, and the surface resin layer has enough oil permeability to permeate the low-temperature exuding oil component exuding from the oil-containing resin layer to a surface of the surface resin layer that is opposite to a side of the oil-containing resin layer.