Catalyst for one-step preparation of methane thiol from synthetic gas containing high-concentration hydrogen sulfide

The invention relates to a catalyst to use synthetical gas containing high concentration H2S as raw material to synthesize methane thiol by one-step method, composed of carrier, active component and active accelerant, where the carrier is SiO2 or TiO2; the active component is Mo-O-K based compound, converted by the fore body K2MoO4 or (NH4)6Mo7O24 plus sylvine or MoO3 plus sylvine; the active accelerant is mainly transition metal like Mn, Fe, Co, Ni, Ce, La, etc, or rare earth oxide; it makes catalysis reaction at 295 deg.C and 0.2 Mpa in the volume ratio of the raw material gas CL/H2/H2S=1/2/(0.1-1) at an airspeed of (2-5) x ten to the power 3 h-1, showing high activity and selectivity, the methane thiol's time-space obtaining rate is up to 0.33g.h-1.ml-1cat, and the methane thiol's selectivity is 98.6%. 涉及一种用于以含高H#-[2]S浓度的合成气为原料，一步法合成甲硫醇的催化剂。此催化剂由载体、活性组分和活性促进剂组成。所说的载体为SiO#-[2]或TiO#-[2]；活性组份为Mo-O-K基复合物，由前驱体K#-[2]MoO#-[4]或(NH#-[4])#-[6]Mo#-[7]O#-[24]加钾盐或MoO#-[3]加钾盐转化而来；所说的活性促进剂主要是锰、铁、钴、镍、铈和镧等过渡金属或稀土金属氧化物；催化剂在反应温度295℃、压力0.2MPa、原料气组成体积比为CO/H#-[2]/H#-[2]S＝1/2/(0.1～1)，空速为(2～5)×10#+[3]h#+[-1]条件下进行催化反应，表现出高的活性和选择性，甲硫醇的时空得率高达0.33g・h#+[-1]・ml#+[-1]#-[cat]，选择性为98.6％。