Abstract:
The present invention provides a supported metal catalyst, a method for synthesizing ammonia using said catalyst, and a supported metal material in which a transition metal is supported on a support, wherein the support is a metal hydride represented by general formula (1): XHn . . . (1); and in general formula (1), X represents at least one selected from the group consisting of atoms from Groups 2 and 3, and lanthanoid atoms, and n is in a range of 2
Abstract:
An ammonia synthesis catalyst having high activity is obtained by having a two-dimensional electride compound having a lamellar crystal structure such as Ca2N support a transition metal. However, since the two-dimensional electride compound is unstable, the stability of the catalyst is low. In addition, in cases where a two-dimensional electride compound is used as a catalyst support, it is difficult to shape the catalyst depending on reactions since the two-dimensional electride compound has poor processability. A composite which includes a transition metal, a support and a metal amide compound, wherein the support is a metal oxide or a carbonaceous support; and the metal amide compound is a metal amide compound represented by general formula (1). M(NH2)x . . . (1) (In general formula (1), M represents at least one metal atom selected from the group consisting of Li, Na, K, Be, Mg, Ca, Sr, Ba and Eu; and x represents the valence of M.)
Abstract:
A novel catalyst capable of selectively catalyzing conversion from glucose to fructose in water or in an aqueous solution is provided. The catalyst is a solid catalyst for a hydride isomerization reaction from glucose to fructose performed in water or in an aqueous solution, comprising a group 13 element oxide whose surface has been subjected to a phosphoric acid treatment.
Abstract:
A catalyst is provided which is used for continuously synthesizing ammonia using a gas containing hydrogen and nitrogen as a raw material, wherein a transition metal which exhibits catalytic activity is supported by a support, and the support is a two-dimensional electride or a precursor thereof. The two-dimensional electride or the precursor thereof is a metal nitride represented by MxNyHz (M represents one or two or more of Group II metals selected from the group consisting of Mg, Ca, Sr and Ba, and x, y and z are in ranges of 1≦x≦11, 1≦y≦8, and 0≦z≦4 respectively, in which x is an integer, and y and z are not limited to an integer) or M3N2 (M is the same as above), or a metal carbide selected from the group consisting of Y2C, Sc2C, Gd2C, Tb2C, Dy2C, Ho2C and Er2C. These catalysts are used for continuously reacting nitrogen with hydrogen, which are raw materials, on the catalyst, wherein the reaction is performed in an ammonia synthesis reaction system under the preferable conditions of a reaction temperature which is equal to or higher than 100° C. and equal to or lower than 600° C., and a reaction pressure which is equal to or higher than 10 kPa and lower than 20 MPa.
Abstract translation:提供了一种催化剂,其用于使用含有氢气和氮气的气体作为原料连续合成氨,其中具有催化活性的过渡金属由载体负载,并且载体是二维电子或其前体 。 二维电子电极或其前体是以M x N y H z表示的金属氮化物(M表示选自Mg,Ca,Sr和Ba的第II族金属中的一种或两种以上,x,y和z在 分别为1≤x≤11,1≤y≤8,0≤z≤4的范围,其中x为整数,y和z不限于整数)或M3N2(M与上述相同) 或选自Y2C,Sc2C,Gd2C,Tb2C,Dy2C,Ho2C和Er2C的金属碳化物。 这些催化剂用于使氮气与作为原料的氢气在催化剂上连续反应,其中反应在反应温度等于或高于100℃的优选条件下在氨合成反应体系中进行。 等于或低于600℃,反应压力等于或高于10kPa并低于20MPa。