Abstract: Provided are a thermal siphon reactor and a hydrogen generator including the same. The hydrogen generator including the thermal siphon reactor includes: a housing; a reaction source container disposed in the housing; a reactor tube connected to the reaction source container in which a catalytic reaction of a reaction source provided from the reaction source container occurs; a catalyst layer which is porous, facilitates gas generation by being contacted with the reaction source, and is disposed in the reactor tube; and a product container which is connected to the reactor tube and collects a reaction product generated in the reactor tube, wherein in the reactor tube, a convection channel through which the reaction product is discharged passes through the reactor tube in the lengthwise direction of the reactor tube. The thermal siphon reactor and the hydrogen generator including the same have a self-operating ability, operate at low costs, and have small installment volume.

Abstract: Provided is a method of preparing hydrogen using an amino acid. The method of preparing hydrogen using an amino acid includes: (a) mixing a metal borohydride and a zwitterionic material; (b) adding a solvent thereto to dissolve the mixture; and (c) generating hydrogen from the solution. The provided method of preparing hydrogen using an amino acid can reduce manufacturing costs, reduce a heating value of hydrogen during hydrolysis, increase a hydrogen generation rate, and allow a hydrogen generating apparatus to be small in size.

Abstract: Provided are an ionic liquid and a method of preparing the same. The ionic liquid includes at least one type of compound represented by (Cat+)(R?COO?). Here, the Cat+ is a cation selected from the group consisting of quaternary ammonium, quaternary phosphonium, sulfonium, imidazolium, pyridinium, pyrazolium, piperidinium, pyrrolium, pyrrolidinium, triazolium, and a mixture of two or more thereof, and R? is a hydrocarbon comprising at least one unsaturated bond, and having 4 to 30 carbon atoms. The ionic liquid is partially or completely miscible with various polar and/or non-polar solvents, and may be used as a solvent, a solvent additive, an electrolyte, a heat carrier, a charge carrier, a heat carrier additive, a charge career additive, or a phase transfer catalyst, at room temperatures and below. Furthermore, the cost of manufacturing the ionic liquid can be reduced.

Abstract: Provided are an ionic liquid and a method of preparing the same. The ionic liquid includes at least one type of compound represented by (Cat+)(R?COO?). Here, the Cat+ is a cation selected from the group consisting of quaternary ammonium, quaternary phosphonium, sulfonium, imidazolium, pyridinium, pyrazolium, piperidinium, pyrrolium, pyrrolidinium, triazolium, and a mixture of two or more thereof, and R? is a hydrocarbon comprising at least one unsaturated bond, and having 4 to 30 carbon atoms. The ionic liquid is partially or completely miscible with various polar and/or non-polar solvents, and may be used as a solvent, a solvent additive, an electrolyte, a heat carrier, a charge carrier, a heat carrier additive, a charge career additive, or a phase transfer catalyst, at room temperatures and below. Furthermore, the cost of manufacturing the ionic liquid can be reduced.

Abstract: The present invention provides metal oxide catalysts and preparation method thereof, and its application for hydrogen generation from a metal borohydride solution. More particularly, provided are an activation method of a newly prepared catalyst and a regeneration method of a deactivated metal oxide catalyst.

Abstract: Provided is a method of preparing hydrogen using an amino acid. The method of preparing hydrogen using an amino acid includes: (a) mixing a metal borohydride and a zwitterionic material; (b) adding a solvent thereto to dissolve the mixture; and (c) generating hydrogen from the solution. The provided method of preparing hydrogen using an amino acid can reduce manufacturing costs, reduce a heating value of hydrogen during hydrolysis, increase a hydrogen generation rate, and allow a hydrogen generating apparatus to be small in size.

Abstract: The present invention provides unsupported and supported cobalt oxide catalysts and preparation method thereof, and its application for hydrogen generation from a metal borohydride solution. More particularly, provided are an activation method of a newly prepared catalyst and a regeneration method of a deactivated cobalt oxide catalyst.

Abstract: Provided are a thermal siphon reactor and a hydrogen generator including the same. The hydrogen generator including the thermal siphon reactor includes: a housing; a reaction source container disposed in the housing; a reactor tube connected to the reaction source container in which a catalytic reaction of a reaction source provided from the reaction source container occurs; a catalyst layer which is porous, facilitates gas generation by being contacted with the reaction source, and is disposed in the reactor tube; and a product container which is connected to the reactor tube and collects a reaction product generated in the reactor tube, wherein in the reactor tube, a convection channel through which the reaction product is discharged passes through the reactor tube in the lengthwise direction of the reactor tube. The thermal siphon reactor and the hydrogen generator including the same have a self-operating ability, operate at low costs, and have small installment volume.

Abstract: The present invention provides unsupported and supported cobalt oxide catalysts and preparation method thereof, and its application for hydrogen generation from a metal borohydride solution. More particularly, provided are an activation method of a newly prepared catalyst and a regeneration method of a deactivated cobalt oxide catalyst.

Abstract: The present invention provides metal oxide catalysts and preparation method thereof, and its application for hydrogen generation from a metal borohydride solution. More particularly, provided are an activation method of a newly prepared catalyst and a regeneration method of a deactivated metal oxide catalyst.