Abstract: A catalyst according to an embodiment is a catalyst for synthesizing 1,3-butadiene from ethanol. The catalyst contains a porous silica support made of crystalline silica, Zn, and Zr, and has a multimodal pore size distribution with a peak pore size (Dmicro) of 2 nm or less and a peak pore size (Dmeso+macro) of more than 2 nm.

Abstract: A hydrocarbon synthesis catalyst is for reacting a raw material gas including hydrogen and carbon dioxide to convert to hydrocarbons, wherein when elemental analysis of a surface of the hydrocarbon synthesis catalyst to be brought into contact with the raw material gas is performed by energy dispersive X-ray spectroscopy (SEM-EDX), 15 to 65% by mass of Fe, 10 to 40% by mass of O, 0.04 to 30% by mass of Na, 0 to 15% by mass of Ni, and 5 to 30% by mass of Cr are detected.

Abstract: Embodiments of the present disclosure provide a marker ink and a method for preparing thereof. The marker ink comprises a water-based acrylic resin, a pigment paste, a cross-linking agent, and water. A mean diameter of a pigment in the pigment paste is less than 150 nm.

Abstract: The present disclosure provides a mark ink and a method for preparing the marker ink. The mark ink includes an azo-metal complex dye, a film-forming resin, and ethanol. The azo-metal complex dye is represented by a formula: where, R1, R2, and R5 are polar groups, M is a metal ion, mXn? is an anion, and n and m are positive integers.

Abstract: Embodiments of the present disclosure provide a marker ink and a method for preparing thereof. The marker ink comprises a water-based acrylic resin, a pigment paste, a cross-linking agent, and water. A mean diameter of a pigment in the pigment paste is less than 150 nm.

Abstract: The present disclosure provides a mark ink and a method for preparing the marker ink. The mark ink includes an azo-metal complex dye, a film-forming resin, and ethanol. The azo-metal complex dye is represented by a formula: where, R1, R2, and R5 are polar groups, M is a metal ion, mXn? is an anion, and n and m are positive integers.

Abstract: A catalyst according to an embodiment is a catalyst for synthesizing 1,3 -butadiene from ethanol. The catalyst contains a porous silica support made of crystalline silica, Zn, and Zr, and has a multimodal pore size distribution with a peak pore size (Dmicro) of 2 in or less and a peak pore size (Dmeso+macro) of more than 2 nm.

Abstract: A catalyst according to an embodiment is a catalyst for synthesizing 1,3-butadiene from ethanol. The catalyst contains a porous silica support made of crystalline silica, ZnO supported on the silica support, and Zr that has interacted with silanol groups of the silica support.

Abstract: The ethanol synthesis catalyst is a catalyst for synthesizing ethanol from carbon dioxide, and includes at least one carrier selected from the group consisting of ZrO2, Al2O3, and TiO2; Fe and Cu supported on the carrier; and Na and/or K supported on the carrier. In one embodiment, the catalyst including iron oxide and copper oxide as the Fe and Cu supported on the carrier can be used, hydrogen can be supplied to the catalyst to reduce iron oxide and copper oxide, and a reaction gas containing CO2 can be supplied to the catalyst after reduction to obtain ethanol from CO2.

Abstract: The present invention relates to a core-shell composite catalyst, wherein the core is a spinel-structure XYaOb catalyst, wherein X and Y, being different from each other, are metal elements selected from main group II, transition elements and main group III of the Periodic Table of Elements; a is a number between 1-15, preferably between 1-5; b is the number of oxygen atoms required to satisfy the valence of the elements; the shell is a molecular sieve catalyst, preferably selected from one or more of ZSM-5, ZSM-11, ZSM-35 and MOR, more preferably selected from ZSM-5 and ZSM-11. When the core-shell composite catalyst is used for preparing p-xylene directly from syngas in one step, the process is simple and easy to operate; the selectivity toward p-xylene in xylene products is high; the conversion of syngas is high; and the service life of the catalyst is long.

Abstract: A hydrocarbon synthesis catalyst is for reacting a raw material gas including hydrogen and carbon dioxide to convert to hydrocarbons, wherein when elemental analysis of a surface of the hydrocarbon synthesis catalyst to be brought into contact with the raw material gas is performed by energy dispersive X-ray spectroscopy (SEM-EDX), 15 to 65% by mass of Fe, 10 to 40% by mass of O, 0.04 to 30% by mass of Na, 0 to 15% by mass of Ni, and 5 to 30% by mass of Cr are detected.