高活性高选择性苯部分加氢制环己烯催化剂的研究  

STUDY ON THE CATALYSTS WITH HIGN ACTIVITY AND HIGH SELECTIVITY FOR PARTIAL HYDROGENATION OF BENZENE TO CYCLOHEXENE

作　　者：刘寿长[1] 王海荣[1] 韩民乐[1] 罗鸽[1] 杨邦举[1] 谢云龙[1] 

机构地区：[1]郑州大学工业催化研究所,河南郑州450052

出　　处：《燃料化学学报》2001年第z1期126-129,共4页Journal of Fuel Chemistry and Technology

基　　金：河南省教委自然科学基金 ( 199915 0 0 0 2 )~~

摘　　要：用化学还原法制得了高活性高选择性Ru Zn B/ZrO2 苯部分加氢催化剂体系。催化剂制备中活性组分前驱体RuCl3 宜在ZrO2 上吸附后再还原。催化剂的活性指数γ4 0 和SHE分别为 15 4 7%和 85 5 % ,均高于进口催化剂水平γ4 0 和SHE分别为 10 0 %～ 12 0 %和 75 %～ 80 % ,具有很好的应用前景。催化剂中Ru Zn B为三元非晶合金 ,B以元素态和NaBO3·3H2 O化合物存在。随反应温度提高 ,合金分解 ,Ru晶化。反应浆液中加入ZnSO4 ·7H2 O可有效降低活性 。By chemical reduction method, the catalyst Ru Zn B/ZrO 2 with high activity and high selectivity for partial hydrogenation of benzene to cyclohexene has been prepared In its preparation, it is suitable that active component RuCl 3 should be absorbed on ZrO 2 firstly, and then be reduced Activity parameter of the catalyst γ 40 and selectivity to cyclohexene at benzene conversion 40% S HE are 154 7 and 85 5% respectively, which is beyond those of import catalyst.Ru Zn B system is noncrystalline alloy, in which boron exists in element and NaBO 3·3H 2O With reaction temperature ascending, the alloy decomposes and ruthenium crystallizes Adding ZnSO 4·7H 2O to reaction slurry can decrease activity and increase selectivity to cyclohexene

关 键 词：苯部分加氢 环己烯 钌催化剂 化学还原法 

分 类 号：O[理学] 643