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首页> 外文会议>World Congress on Particle Technology >One-step Synthesis of Methanethiol with Mixture Gases (CO/H2S/H2) over SB A-15 Supported Mo-based Catalysts
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One-step Synthesis of Methanethiol with Mixture Gases (CO/H2S/H2) over SB A-15 Supported Mo-based Catalysts

机译：用Sb A-15负载的MO催化剂的混合气体（CO / H2S / H2）的甲基硫醇的一步合成

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摘要

K_n-Mo/SBA-15 catalysts prepared via incipient-wetness impregnation by using K2CO3 and (NH4)6Mo7O_(24)·4H2O as precursors were tested for synthesizing CH3SH with mixture gases (CO/H2S/H2) and the parameters of pretreatment and reaction conditions were investigated in detail. After pretreatment under the optimal conditions (reduction temperature of 400 °C, vulcanization temperature of 280 °C and vulcanization time of 6h), K_n-Mo/SBA-15 catalysts exhibit a highest performances for CH3SH synthesis at reaction conditions of CO/H2S/H2=1/1/2, 0.2 MPa, 1000 h~(-1) and 300 °C. It was found that the optimal K/Mo molar ratio of K_n-Mo/SBA-15 is 2.0. On the basis of H2-TPR and XRD characterization results, it can be concluded that the addition of K would lead to the transformation of Mo~(6+) from octahedral Mo (O_h) into tetrahedron Mo (T_d). The promoting effect of K was achieved by interaction between K and Mo species to form the single molybdenum K2MoO4, which is beneficial to the formation of CH3SH.
机译：通过使用K 2 CO 3和（NH 4）6MO7O_（24）·4H2O作为前体的通过初期湿度浸渍制备的K_N-MO / SBA-15催化剂以合成CH3SH，用混合物气体（CO / H2S / H2）和预处理的参数和预处理的参数详细研究了反应条件。在最佳条件下的预处理（400℃的降低温度，硫化温度为280℃和6小时的硫化时间），K_N-Mo / SBA-15催化剂在CO / H 2 S / H 2 S的反应条件下表现出CH3SH合成的最高性能。 H2 = 1/1/2，0.2MPa，1000小时〜（-1）和300°C。发现K_N-MO / SBA-15的最佳K / Mo摩尔比为2.0。在H2-TPR和XRD表征结果的基础上，可以得出结论，添加K将导致Mo〜（6+）从八面体Mo（O_H）转化为四面体MO（T_D）。通过K和MO物种之间的相互作用来实现K的促进效果，形成单钼K2MOO4，这对CH3SH的形成有益。

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