Pd/Al2O3 催化合成2,3,5-三甲基氢醌的连续工艺
来源期刊：中南大学学报(自然科学版)1998年第5期
论文作者：钱东 王开毅 杨礼义 张茂昆
文章页码：97 - 99
关键词：2，3，5－三甲基氢醌;Pd／Al2O3 催化剂;固定床连续工艺;加氢合成
Key words：2，3，5－trimethylhydroquinone; Pd/Al2O3 catalyst; fixed-bed continuous process; hydrogenation synthesis
摘 要：利用Pd／AL2O3催化剂，采用固定床的连续工艺将2，3，5－三甲基苯醌催化加氢得到高纯度的2，3，5－三甲基氢醌．考察了溶剂对加氢反应的影响，并通过实验确定了加氢工艺条件：2，3，5－三甲基苯醌的空速为0．27g（gH）－1，氢分压为0．1MPa，加氢反应温度为50℃．同时将Pd／AL2O3与Pt/Al2O3的催化性能进行了比较，发现Pd／Al2O3催化剂在使用过程中选择性上升.
Abstract: Trimethylhydroquinone with high quality was synthesized by catalytic hydrogenation of 2，3，5-trimethylbenzoquinone over Pd/Al2O3 catalyst by a fixed bed continuous process.The effects of solvents on the hydrogenation reaction were investigated,and the hydrogenation conditions were found by some conditional reations:the space velocity was 0 27 g·(g·h)-1 based on 2，3，5-trimethylbenzoquinone,the hydrogen partial pressure was 0.1 MPa and the hydrogenation temperature was 50 ℃.Meanwhile,the catalytic properties of Pd/Al2O3 were compared with Pt/Al2O3 and it was found that the selectivity of Pd/Al2O3 rose during continuous use.
