Abstract: A hydrogenolysis/hydrogenation catalyst includes copper oxide, calcium oxide, silicon dioxide, and sodium oxide, wherein the hydrogenolysis/hydrogenation catalyst is a powder, tablet, or extrudate, the hydrogenolysis/hydrogenation catalyst is substantially free of chromium, the hydrogenolysis/hydrogenation catalyst exhibits a crystallite phase of CuO and an additional crystallite phase selected from the group consisting of cubic SiO2, rhombohedral calcium carbonate CaCO3, anorthic calcium silicate CaCO3, calcium silicate hydroxide hydrate (Ca14Si24O58(OH)8·5H2O), calcium silicate hydrate 4CaO·5 SiO2·5H2O, alumina, and combinations of two or more thereof.

Abstract: A method of preparing a calcined hydrogenolysis/hydrogenation catalyst includes mixing a copper-containing material, manganese-containing material, sodium aluminate, and water to obtain an aqueous slurry; contacting the aqueous slurry with a caustic material to form a precipitate in a caustic aqueous slurry; removing the precipitate from the caustic aqueous slurry; and removing residual water from the precipitate to form a dried precipitate; calcining the dried precipitate to form the calcined hydrogenolysis/hydrogenation catalyst exhibiting a Brunauer-Emmett-Teller (“BET”) surface area of about 5 m2/g to about 75 m2/g. The calcined hydrogenolysis/hydrogenation catalyst may include a spinel structure crystallite size of about 15 nm or less. The calcined hydrogenolysis/hydrogenation catalyst may include a tenorite crystallite size of about 20 nm to 30 nm.

Abstract: A hydrogenolysis catalyst comprises a catalytic component that includes copper oxide, manganese oxide, and aluminum oxide, and a binder that includes a zirconium component, wherein the catalyst comprises at least about 30.0 wt % copper oxide, and the catalyst is substantially free of silicon or an oxide thereof. The hydrogenolysis catalysts are effective for converting fatty acid esters to fatty alcohols.

Abstract: A catalyst includes a mixed metal oxide; an alumina; silica, and calcium, where the mixed metal oxide includes Cu and at least one of Mn, Zn, Ni, or Co. Such catalysts exhibit enhanced tolerance sulfur-containing compounds and free fatty acids.

Abstract: A catalyst includes a mixed metal oxide; an alumina; silica, and calcium, where the mixed metal oxide includes Cu and at least one of Mn, Zn, Ni, or Co. Such catalysts exhibit enhanced tolerance sulfur-containing compounds and free fatty acids.

Abstract: A catalyst includes a mixed metal oxide; an alumina; silica, and calcium, where the mixed metal oxide includes Cu and at least one of Mn, Zn, Ni, or Co. Such catalysts exhibit enhanced tolerance sulfur-containing compounds and free fatty acids.

Abstract: A catalyst includes a mixed metal oxide; an alumina; silica, and calcium, where the mixed metal oxide includes Cu and at least one of Mn, Zn, Ni, or Co. Such catalysts exhibit enhanced tolerance sulfur-containing compounds and free fatty acids.

Abstract: Hydrogen generating apparatus that is capable of controlling the amount of hydrogen generation. The hydrogen generating apparatus has an electrolyzer, a first electrode, a second electrode, a switch, which is located between the first electrode and the second electrode, a flow rate meter, which measures an amount of hydrogen generation in the second electrode, and a switch controller, which receives a set value, compares the amount of hydrogen generation measured by the flow rate meter with the set value, and controls an on/off status of the switch. The amount of hydrogen generation can be controlled by use of on/off time and/or on/of frequency of the switch.

Abstract: A fuel cell power generation system including: a hydrogen generating apparatus, controlling an amount of hydrogen generation by controlling an on/off status of a switch connected between electrodes; and a fuel cell, being supplied with hydrogen generated by the hydrogen generating apparatus and producing a direct current by converting chemical energy of the hydrogen to electrical energy.

Abstract: A hydrogen generating apparatus, capable of controlling the amount of hydrogen generation, has an electrolyzer, which is filled with an aqueous electrolyte solution containing hydrogen ions, a first electrode, which is accommodated in the electrolyzer, is submerged in the aqueous electrolyte solution, and generates electrons, a second electrode, which is accommodated in the electrolyzer, is submerged in the aqueous electrolyte solution, and receives the electrons to generate hydrogen, a switch, which is located between the first electrode and the second electrode, a flow rate meter, which measures an amount of hydrogen generation in the second electrode, and a switch controller, which receives a set value, compares the amount of hydrogen generation measured by the flow rate meter with the set value, and controls an on/off status of the switch. The amount of hydrogen generation can be controlled by use of on/off time and/or on/of frequency of the switch.

Abstract: One aspect of the invention provides an electrolyte solution for a hydrogen generating apparatus that includes water, at least one metal borohydride, at least one ionic compound, and at least one chelating agent, as well as a hydrogen generating apparatus that includes the electrolyte solution. With an electrolyte solution for a hydrogen generating apparatus based on an embodiment of the invention, it is possible to regulate the rate at which the hydrogen is generated and increase the amount and time of hydrogen generation.

Abstract: The invention provides an electrolyte solution for hydrogen generating apparatus including water; at least one ionizing compound; and at least one chelating agent. The electrolyte solution for hydrogen generating apparatus according to the invention can increase hydrogen generation time and an amount of hydrogen generation by controlling hydrogen generation rate and by reducing an amount of metal hydroxide generation.

Abstract: Hydrogen generating apparatus that is capable of controlling the amount of hydrogen generation. The hydrogen generating apparatus in accordance with an embodiment of the present invention has an electrolyzer, a first electrode, a second electrode, a variable resistance, which is located between the first electrode and the second electrode, a flow rate meter, which measures an amount of hydrogen generation in the second electrode, and a variable resistance controller, which receives a set value, compares the amount of hydrogen generation measured by the flow rate meter with the set value, and controls a resistance value of the variable resistance. The amount of hydrogen generation can be controlled by use of variable resistance.

Abstract: The present invention discloses a hydrogen generating apparatus that is capable of controlling the amount of hydrogen generation.

Abstract: Hydrogen generating apparatus that is capable of controlling the amount of hydrogen generation. The hydrogen generating apparatus has an electrolyzer, a first electrode, a second electrode, a switch, which is located between the first electrode and the second electrode, a flow rate meter, which measures an amount of hydrogen generation in the second electrode, and a switch controller, which receives a set value, compares the amount of hydrogen generation measured by the flow rate meter with the set value, and controls an on/off status of the switch. The amount of hydrogen generation can be controlled by use of on/off time and/or on/of frequency of the switch.

Abstract: There is provided a hydrogen generator having a porous electrode plate. The hydrogen generator including: an electrolytic bath having an electrolyte of a predetermined amount filled therein; a cover hermetically covering an open top of the electrolytic bath and having at least one hydrogen outlet; an electrode part fixed to the cover and having a porous structure formed on a body portion thereof to allow the electrolyte of the electrolytic bath to pass freely there through, the body portion of the electrode part immersed in the electrolytic bath; and a power supply supplying current to the electrode part.

Abstract: The present invention discloses a hydrogen generating apparatus that is capable of controlling the amount of hydrogen generation. The hydrogen generating apparatus in accordance with an embodiment of the present invention has an electrolyzer, which is filled with an aqueous electrolyte solution containing hydrogen ions, a first electrode, which is accommodated in the electrolyzer, is submerged in the aqueous electrolyte solution, and generates electrons, a second electrode, which is accommodated in the electrolyzer, is submerged in the aqueous electrolyte solution, and receives the electrons to generate hydrogen, a switch, which is located between the first electrode and the second electrode, a flow rate meter, which measures an amount of hydrogen generation in the second electrode, and a switch controller, which receives a set value, compares the amount of hydrogen generation measured by the flow rate meter with the set value, and controls an on/off status of the switch.