甲醇羰基化反应中镍-活性炭催化剂的研究

An investigation on a nickel catalyst for the carbonylation of methyl alcohol

摘要: 使用活性炭载体上的负载型金属镍催化刺,常压甲醇羰基化合成醋酸,可以在少量促进剂碘代甲烷存在下进行。本文探讨了催化剂还原活化方法、催化剂组分和反应条件对羰基化反应的效应。实验结果表明,在适当反应条件下,反应产物醋酸得率可这65%以上,羰基化产物可大于70%,同时反应中产生某些副产物甲烷,二甲醚和CO_2等。这一类型的催化剂可望在甲醇羰基化反应中得到实际应用。

Abstract: Under the atmospheric pressure, the vapour phase catalytic carbonylation of methyl alcohol has been studied, of which the metallic nickel embedded in the substrate of activated carbon is used as a catalyst with a small amount of methyl iodide as a promoter.In order to get additional imforation for this reaction, the changes of performance caused by the presence of small amount of ther elements have also been observed analogically.When the reaction conditions are appropriate, over 65% yield of acetic acid and 70% yield of carbonylated products can be obtained, in addition, some amount of methane, dimethyl ether and CO_2 also liberated with the main products. The experimental result shows that such type of Ni/activated carbon catalyst would be one of the future candidates of non-Rh catalyst for the practical use in the carbonylation of methyl alcohol.