Abstract—

Manganese and nickel co-modified K/Co/MoS₂ catalysts supported on graphene were prepared by incipient wetness impregnation method for application in higher alcohol synthesis (HAS). All catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption, temperature-programmed reduction (TPR) and transmission electron microscopy (TEM). The effect of promoters, as well as supports on higher alcohol synthesis production from syngas, was investigated in a fixed bed reactor. The process was performed with an molar ratio H₂ : CO = 1 : 1, operating pressure and temperature of 4 MPa and 330°C, respectively, and gas hourly space velocity (GHSV) 3.84 m³(STP)/(kg_cat h) as reaction conditions (STP— standard temperature and pressure). Results originated from practical works showed that the addition of Ni to the graphene-based catalyst increased HAS production and decreased methanol formation. The total alcohols space-time yield (STY) and alcohol selectivity on Ni/Mn/Co/Mo/K/graphene catalyst reached a maximum at 0.41 g_alc/(g_cat h) and 63.51%, respectively, which is higher than the same composition over alumina supported catalyst.

中文翻译：

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助剂负载量对合成气中高级醇合成的碱化双金属Co-Mo催化剂有何影响？

摘要—

采用初湿浸渍法制备了石墨烯负载的锰镍共修饰的K / Co / MoS ₂催化剂，用于高级醇合成（HAS）。所有催化剂均通过X射线衍射（XRD），氮吸附-解吸，程序升温还原（TPR）和透射电子显微镜（TEM）进行表征。在固定床反应器中研究了促进剂以及载体对合成气更高醇合成产量的影响。该过程的摩尔比为H ₂：CO = 1：1，工作压力和温度分别为4 MPa和330°C，气体时空速（GHSV）为3.84 m ³（STP）/（kg _cat h）作为反应条件（STP-标准温度和压力）。来自实际工作的结果表明，向石墨烯基催化剂中添加Ni可以增加HAS的产生并减少甲醇的形成。Ni / Mn / Co / Mo / K /石墨烯催化剂上的总醇时空产率（STY）和醇选择性分别达到0.41 g _alc /（g _cat  h）和63.51％的最大值，高于与氧化铝负载的催化剂具有相同的组成。