Abstract: A gas capture system includes a first heat exchanger that exchanges heat between cold heat of a fuel that is vaporizing and a first gas mixture to cool the first gas mixture, a first dehumidifier that dehumidifies the first gas mixture cooled through the first heat exchanger, a first compressor that presses the first gas mixture passing through the first dehumidifier, a first separation device that separates a second gas mixture including a reference gas from the pressed first gas mixture, and a liquefier that liquefies the reference gas to generate a reference liquid.

Abstract: Provided is a positive electrode active material capable of achieving a lithium secondary battery having excellent initial charge and discharge efficiency, life characteristics, and thermal stability and a preparation method thereof, wherein the positive electrode active material of the present invention includes a core portion including a lithium transition metal oxide wherein a mole ratio of nickel (Ni) in total transition metals is 80 mol % or more, and a layer-structured shell portion formed on the core portion and including a lithium transition metal oxide in which a molar ratio of manganese (Mn) in the total transition metals is 30 mol % or more, and satisfies Equation 1: 0.005 ? Thickness ? of ? the ? shell ? portion ( ?m ) Average ? particle ? diameter ( D 50 ) ? of ? the ? positive ? electrode ? ? active ? material ( ?m ) ? 0.15 .

Abstract: An embodiment of the present specification provides a method for preparing a catalyst for preparing a carbon nanotube, comprising: (a) dissolving a main catalyst precursor, a support precursor, a cocatalyst precursor and a precipitation inhibitor in a solvent to prepare a precursor solution; and (b) pyrolyzing the precursor solution by spraying the precursor solution into a reactor, wherein a mole fraction of the precipitation inhibitor to the cocatalyst precursor is 0.1 to 1.5.

Abstract: Disclosed is an apparatus for producing a hydrogen gas according to the present disclosure includes a desulfurizer, a plasma reactor, a first adsorber, and a heat exchanger. The disclosed apparatus does not require additional purification of hydrogen and has excellent energy efficiency by utilizing wasted heat of the produced hydrogen.

Abstract: Disclosed is an apparatus for producing a hydrogen gas according to the present disclosure includes a desulfurizer, a plasma reactor, a separator, a first heat exchanger, a second heat exchanger, and a first adsorber, and circulates at least a portion of a first off gas to the plasma reactor again.

Abstract: Disclosed is an apparatus for producing a hydrogen gas, the apparatus including a desulfurizer that desulfurizes a hydrocarbon containing gas, a plasma reactor that generates the hydrogen containing gas from the desulfurized hydrocarbon containing gas through plasma based pyrolysis, a separator that separates a hydrogen gas from the hydrogen containing gas, and a heat exchanger that exchanges heat between at least one of the hydrocarbon containing gas at a front end of the desulfurizer and the desulfurized hydrocarbon containing gas at a rear end of the desulfurizer, the hydrogen gas being separated by the separator.

Abstract: A combustion control apparatus of an Liquefied Petroleum Gas (LPG) reforming system and a method for controlling the same may include a burner provided to supply heat to a reformer, a flame temperature analyzer configured to analyze a flame temperature of the burner, an air flow rate calculator configured to determine an initial value of a flow rate of air to be supplied to the burner depending on a flow rate of fuel gas supplied to the burner, and an air flow rate controller electrically connected to the air flow rate calculator and the flame temperature analyzer and configured to select the flow rate of the air at which the flame temperature transmitted by the flame temperature analyzer reaches a maximum while changing the flow rate of the air from the initial value and to control supply of the selected flow rate of the air to the burner.