松脂催化加氢制备氢化松香及高顺反比蒎烷  

Catalytic Hydrogenation of Pine Gum to Hydrogenated Rosin and Pinane of High Cis-trans Ratio

作　　者：陈小鹏[1] 王琳琳[1] 阳承利[1] 祝远姣[1] 韦小杰[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《精细化工》2002年第11期654-657,共4页Fine Chemicals

基　　金：国家自然科学基金资助项目(No .2 97660 0 2 );广西自然科学基金资助项目 (No .0 2 2 90 0 5 )~~

摘　　要：在FYX - 2G型高压搅拌釜中 ,以松脂为原料进行加氢反应的研究 ,测定在不同搅拌器形式、不同搅拌转速下高压釜的持气量和反应效果 ,认识到松脂催化加氢是外扩散控制的反应 ,当搅拌转速达 6 0 0r/min时 ,基本上能消除外扩散的影响。考察了Raney镍和Pd/C催化剂在反应温度 80～ 2 0 0℃、压力 4 0～ 10 0MPa的条件下对松脂加氢转化率和选择性的影响 ,结果表明Raney镍更适宜于松脂催化加氢 ,其转化率随温度、压力增加而提高 ,但蒎烯加氢的选择性变化则反之。采用温度 80～ 170℃、压力 4 0～ 8 0MPa的操作序列 ,克服了蒎烯加氢转化率与选择性互逆的缺点 ,缩短了反应时间 ,制得的氢化松香产品优于GB/T14 0 2 0— 92特级指标 ,蒎烷顺反比达 17 8∶1。Hydrogenation of pine gum was investigated in a high pressure agitated autoclave (type FYX-2G).Gas hold up and reaction effect of high pressure autoclave with different types of stirrers and rotational speeds were determined.The result shows that the catalytic hydrogenation of pine gum is a reaction of external diffusion control.The effect of external diffusion could be eliminated when rotational speed was up to 600 r·min -1 The effects of Raney nickel and Pd/C catalyst, reaction temperature of 80-200 ℃,and pressure of 4 0-10 0 MPa on conversion rate and selectivity of hydrogenation were also investigated,and the result showed that Raney nickel was suitable for catalytic hydrogenation of pine gum, and the conversion rate increased with temperature and pressure, but the selectivity decreased with temperature and pressure.This shortcoming could be eliminated by using series operation conditions of temperature (80-170 ℃) and pressure (4 0-10 0 MPa).The reaction time was shortened.The hydrogenated rosin prepared by the authors was superior to GB/T14020-92 special standard, and the ratio of cis pinane to trans pinane was 17 8∶1.

关 键 词：松脂 催化加氢 制备 氢化松香 高顺反比 蒎烷 

分 类 号：TQ351.471[化学工程]