The reverse water gas shift (rWGS) reaction using a supported zeolite catalyst containing molybdenum (Mo) was investigated. The Mo-based catalyst is expected to be effective for selective conversion of CO₂ into CO. The focus of this work was on the performance of the Mo-based catalyst and the effect of adding copper (Cu) to the catalyst. The Mo catalyst exhibited high CO selectivity (99%) with CO₂ conversion of 14.3% at 773 K. The activity of the catalyst containing Cu as an additive depended on the Mo/Cu ratio. For a series of Mo(x)Cu(1-x)/Faujasite (FAU) catalysts (x: metal content, mmol/g), the Mo(0.8)Cu(0.2)/FAU catalyst exhibited the best performance. X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed reduction with hydrogen analysis of the Mo(x)Cu(1-x)/FAU catalysts revealed that the presence of Cu as an additive influenced the reduction step of MoO₃ to MoO₂, with MoO₃ being the active species. Transmission electron microscopy verified morphology of MoO₃ and Cu particles on the support. The excellent performance of the prepared Mo(0.8)Cu(0.2)/FAU catalyst was due to facilitation of the reduction process involving the Mo species.

研究了使用含钼（Mo）的负载型沸石催化剂进行的反向水煤气变换（rWGS）反应。Mo基催化剂有望有效地将CO ₂选择性转化为CO。这项工作的重点是Mo基催化剂的性能以及向催化剂中添加铜（Cu）的效果。Mo催化剂在CO _2中表现出高的CO选择性（99％）在773K下的转化率为14.3％。含Cu作为添加剂的催化剂的活性取决于Mo / Cu比。对于一系列Mo（x）Cu（1-x）/八面沸石（FAU）催化剂（x：金属含量，mmol / g），Mo（0.8）Cu（0.2）/ FAU催化剂表现出最佳性能。X射线衍射，X射线光电子能谱和通过程序升温进行的Mo（x）Cu（1-x）/ FAU催化剂的氢分析表明，Cu作为添加剂的存在影响了MoO ₃还原为MoO ₂，其中MoO ₃是活性物质。透射电镜证实MoO _3的形态载体上的铜颗粒。制备的Mo（0.8）Cu（0.2）/ FAU催化剂的优异性能归因于简化了涉及Mo物种的还原过程。