双金属催化剂催化合成三甲基氢醌工艺研究  

Synthesis of 2,3,5-trimethylhydroquinone with bimetallic catalysts

作　　者：杨礼义 钱东[2] 张茂昆 王开毅[2] 

机构地区：[1]长岭炼油化工总厂研究院,湖南岳阳414012 [2]中南工业大学化学系,湖南长沙410083

出　　处：《石化技术与应用》2000年第2期68-69,共2页Petrochemical Technology & Application

摘　　要：分别利用Pt-Re Al2 O3和Pt-Pd Al2 O3催化剂 ,采用固定床连续工艺 ,由 2 ,3 ,5-三甲基苯醌合成出了高产率的 2 ,3 ,5-三甲基氢醌 ,并与Pt Al2 O3和Pd Al2 O3催化剂进行了性能比较。结果表明 ,Pt-Pd Al2 O3催化剂具有较高的初选择性 ;同时 ,随着 2 ,3 ,5三甲基苯醌空速的提高 ,Pt-Pd Al2 O3初活性的下降幅度小于Pt Al2 O3和Pd Al2 O3初活性的下降幅度。The 2,3,5-trimethylhydroquinone with high yield was synthesized by the catalytic hydrogenation of 2,3,5-trimethylbenzoquinone with bimetallic catalysts Pt-Re/Al 2O 3 and Pt-Pd/Al 2O 3 by fixed bed continuous process.The catalytic properties of Pt-Re/Al 2O 3 and Pt-Pd/Al 2O 3 catalysts were compared with those of Pd/Al 2O 3 and Pt/Al 2O 3 catalysts.The results showed that Pt-Pd/Al 2O 3 catalyst could increase the initial selectivity greatly.The initial activity of Pt-Pd/Al 2O 3 decreased less than those of Pt/Al 2O 3 and Pd/Al 2O 3 catalysts with the increase of 2,3,5-trimethylbenzoquinone space velocity.

关 键 词：三甲基氢醌 催化剂 工艺 双金属催化剂 催化 

分 类 号：TQ244.68[化学工程—有机化工] TQ426.82