当前位置：
X-MOL 学术
›
ChemistrySelect
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Synthesis of Methanethiol from Methanol and Carbon Disulfide over CoKW/Al2O3 Catalysts: The Possible Reaction Network and Reaction Mechanism
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-09-06 , DOI: 10.1002/slct.201801727 WeiMing Wang 1 , JianJun Li 2 , QiuJin He 1 , Shuai Peng 1 , YiQuan Yang 2 , Ming Li 1
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-09-06 , DOI: 10.1002/slct.201801727 WeiMing Wang 1 , JianJun Li 2 , QiuJin He 1 , Shuai Peng 1 , YiQuan Yang 2 , Ming Li 1
Affiliation
|
Synthesis of methanethiol from methanol and carbon disulfide was catalyzed by KW/γ‐Al2O3 catalysts under different reaction conditions. A possible reaction network was put forward by investigating the effects of the molar ratio of reactants, the reaction pressure, the reaction temperature, the residence time, and in the presence of water and hydrogen sulfide on the catalytic performance. Furthermore, the relationship between the conversion of CH3OH, the yield of CH3SH and the surface acid‐base properties was discussed in detail. The catalytic results measured in the laboratory scale (2 ml catalysts) and those obtained in the scaling‐up tests (50 ml original grain catalysts) are well matched. Combined with pyridine adsorption Fourier Transform Infrared (FT‐IR), CO2/NH3‐Temperature Programmed Desorption (CO2/NH3‐TPD), and the catalytic results, it was found that the conversion of CH3OH can be chiefly correlated with weak and moderate acid sites, while the selectivity toward CH3SH is mainly related to the weak basic sites, and the possible reaction mechanism was put forward.
中文翻译：
CoKW / Al2O3催化剂上由甲醇和二硫化碳合成甲硫醇的可能的反应网络和反应机理
从甲醇和二硫化碳甲硫醇的合成分别将KW /γ-Al系催化2分ö 3不同反应条件下的催化剂。通过研究反应物的摩尔比，反应压力，反应温度，停留时间以及水和硫化氢的存在对催化性能的影响，提出了可能的反应网络。此外，CH的转换之间的关系3 OH，CH的收率3SH和表面酸碱性质进行了详细讨论。在实验室规模下测量的催化结果（2 ml催化剂）和在放大试验中获得的催化结果（50 ml原始谷物催化剂）非常匹配。结合吡啶吸附傅里叶变换红外光谱（FT‐IR），CO 2 / NH 3程序升温脱附（CO 2 / NH 3 ‐TPD）和催化效果，发现CH 3 OH的转化主要是CH 3 SH的选择性主要与弱碱性位有关，而对CH 3 SH的选择性主要与弱酸性位有关，并提出了可能的反应机理。
更新日期：2018-09-06
中文翻译：
CoKW / Al2O3催化剂上由甲醇和二硫化碳合成甲硫醇的可能的反应网络和反应机理
从甲醇和二硫化碳甲硫醇的合成分别将KW /γ-Al系催化2分ö 3不同反应条件下的催化剂。通过研究反应物的摩尔比，反应压力，反应温度，停留时间以及水和硫化氢的存在对催化性能的影响，提出了可能的反应网络。此外，CH的转换之间的关系3 OH，CH的收率3SH和表面酸碱性质进行了详细讨论。在实验室规模下测量的催化结果（2 ml催化剂）和在放大试验中获得的催化结果（50 ml原始谷物催化剂）非常匹配。结合吡啶吸附傅里叶变换红外光谱（FT‐IR），CO 2 / NH 3程序升温脱附（CO 2 / NH 3 ‐TPD）和催化效果，发现CH 3 OH的转化主要是CH 3 SH的选择性主要与弱碱性位有关，而对CH 3 SH的选择性主要与弱酸性位有关，并提出了可能的反应机理。
京公网安备 11010802027423号