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在推导出适应于甲烷化反应体系非线性动态分析不同吸附物种动力学参数模型的基础上,采用计算机优化出工业镍铝甲烷比催化剂上可逆吸附氢和可逆吸附一氧比碳的吸附速率常数和吸附平衡常数。结果表明,镍铝催化剂上吸附可逆氢要比吸附一氧化碳快2.2倍左右。该结果为镍铝催化剂上甲烷化产物的生成主要依赖于一氧化碳的吸附这一判断提供了理论依据。由于镍铝催化剂上甲烷化是可逆吸附氢与不可逆吸附一氧化碳共同作用的结果,且不可逆吸附一氧化碳不随压力而变化,因而镍铝催化剂上的甲烷化反应可在常压下进行。
On the basis of deducing the kinetic parameter model of different adsorbate species which is adapted to the dynamic analysis of the methanation reaction system, the adsorption rate constants of reversible adsorbed hydrogen and reversible adsorbed monoxygen on the Ni / Adsorption equilibrium constant. The results show that the nickel-aluminum catalyst adsorbs reversible hydrogen 2.2 times faster than the adsorption of carbon monoxide. The results provide a theoretical basis for the determination that the formation of methanation products on nickel-aluminum catalysts mainly depends on the adsorption of carbon monoxide. As the nickel-aluminum catalyst methanation is the result of the reversible adsorption of hydrogen and irreversible adsorption of carbon monoxide and irreversible adsorption of carbon monoxide does not vary with pressure, and therefore the nickel-aluminum catalyst methanation reaction can be carried out at atmospheric pressure.