在骨架镍上松香催化加氢反应的研究  

STUDY ON CATALYTIC HYDROGENATION OF ROSIN ON RANEY NICKEL

作　　者：陈小鹏[1] 王琳琳[1] 马建[1] 阳承利[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《林产化学与工业》2002年第1期12-16,共5页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目 (2 976 6 0 0 2 ) ;广西自然科学基金资助项目 (桂科配 982 4 0 0 6 )

摘　　要：测定在不同类型搅拌器下高压釜的持气量和反应效果 ,认识到骨架镍上松香催化加氢是外扩散控制的反应。采用溶剂法、双层组合式搅拌器及改变搅拌转速达到了消除外扩散影响的目的 ,从而使骨架镍显示出与贵金属Pd/C催化剂相似的活性。在反应过程中 ,在线跟踪了反应物和产物的浓度随时间的变化关系 ,结果表明在 170℃、5 .0MPa的反应条件下 。Gas hold up and reaction effect of autoclave have been determined with different types of stirrers,which shows that the catalytic hydrogenation of rosin is a reaction of external diffusion control on Raney nickel for the purpose of eliminating the influence of external diffusion by using solvent and two layer stirrer with variation of agitation speed,which leads Raney nickel to show similar activity as that of the noble metal Pd/C catalyst.Relation between concentration of reactants and products and reaction time has been traced on line in the course of reaction.Result shows that hydrogenations of abietic acid to abietenoic acid and abietanoic acid are parallel reactions under the reaction condition of 170?℃,5.0?MPa.

关 键 词：骨架镍 松香 催化加氢 枞酸 催化剂 外扩散控制系统 氢化松香 

分 类 号：TQ351.471[化学工程] O621.251[理学—有机化学]