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研究了苯气相氧化为顺酐用的 V-Mo-P-Ni-α-Al_2O_3系催化剂,筛选出顺酐收率最大时的最佳配方,并用等离子射流法将氧化铝载体喷涂在反应器壁上,然后喷涂活性组分及助剂,获得了良好效果。苯氧化反应的化学计量关系不仅取决于系统中所含的物种数目及类别,且与所使用的催化剂有关。在所研制的催化剂上进行了苯氧化反应实验,操作条件范围如下:689～724K;原料气空速0.092～0.22mol/(h·g);苯浓度0.5～1.98%。根据实验结果提出了相应的化学计量式,筛选出最佳反应动力学模型。
The V-Mo-P-Ni-α-Al 2 O 3 catalyst for the gas-phase oxidation of benzene to maleic anhydride was studied. The optimum formula was obtained when the yield of maleic anhydride was the maximum. The alumina carrier was sprayed on the wall of the reactor by plasma jet method On, and then spraying the active ingredients and additives to obtain good results. The stoichiometry of the benzene oxidation reaction depends not only on the number and type of species contained in the system but also on the catalyst used. Phenol oxidation experiments were carried out on the catalyst. The operating conditions ranged from 689 to 724K. The space velocity of feed gas was 0.092-0.22mol / (h · g) and the concentration of benzene was 0.5-1.98%. Based on the experimental results, the corresponding stoichiometry was proposed and the best reaction kinetic model was screened out.