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采用电子能谱分析仪(ESCA)、高温高压原位红外池和动力学装置,对低压合成甲醇Cu/Zno/Al_2O_3催化剂进行了表面吸附态、反应中间物和催化剂活性组分的检测。实验证明,Cu/Zno/Al_2O_3催化剂在低压合成甲醇反应中,Cu~·为活性组分。实验检测到反应物分子在催化剂表面上的吸附态M—CO、M—CO_2和M—H;检测到的反应中间物为和。本文把动力学实验结果与活性组分、中间物联系起来,讨论了二氧化碳在低压合成甲醇反应中的作用,提出了由合成气合成甲醇的反应机理。
Electron spectrum analyzer (ESCA), high temperature and high pressure in-situ infrared cell and dynamic device were used to detect the surface adsorption state, reaction intermediate and catalyst active component of low pressure methanol synthesis Cu / Zno / Al 2 O 3 catalyst. Experiments show that, Cu / Zno / Al_2O_3 catalyst in the low pressure methanol synthesis reaction, Cu ~ · as an active component. The adsorption states M-CO, M-CO 2 and M-H of the reactant molecules on the catalyst surface were detected experimentally. The detected reaction intermediates were and. In this paper, kinetic experimental results with the active components, intermediates linked to discuss the role of carbon dioxide in the low-pressure methanol synthesis reaction was proposed synthesis gas synthesis methanol reaction mechanism.