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二氧化碳直接加氢合成反应是二氧化碳活化和有效利用的重要途径之一。列举了１８个二氧化碳氢化反应，并对相应的反应热和平衡常数进行了计算。假定各反应物以反应的摩尔计量比参加反应、反应物的总量均为１ｍｏｌ，求出了各反应中ＣＯ２的平衡转化率。
Direct hydrogenation of carbon dioxide synthesis reaction is one of the important ways of carbon dioxide activation and effective use. Eighteen carbon dioxide hydrogenation reactions are listed and the corresponding reaction heat and equilibrium constants are calculated. Assuming that the reactants participate in the reaction in molar ratios, the total amount of reactants is 1 mol, and the equilibrium conversion rate of CO2 in each reaction is obtained.