稀土金属氧化物催化松香酯化反应的研究  

STUDY ON ESTERIFICATION OF ROSIN CATALYZED BY RARE EARTH METAL OXIDES

作　　者：郝强[1] 哈成勇[1] 

机构地区：[1]中国科学院广州化学研究所,广东广州510650

出　　处：《林产化学与工业》2000年第3期17-21,共5页Chemistry and Industry of Forest Products

摘　　要：研究了稀土金属氧化物 (NdnOm,SmnOm,GdnOm,LanOm)对松香酯化反应的催化作用 ,系统探讨了各种反应因素对松香酯化反应的影响 ,研究结果表明 :稀土金属氧化物催化松香与各种醇的酯化时 ,具有催化剂用量少 (仅占原料松香的 0 .33 %～0 .83 % )、反应时间短 ( 2～ 6h)、反应温度低 ( 2 0 0～ 2 60℃ )等优点 ;酯化完成后不需碱中和等后处理过程 。Catalytic effect of rare earth metal oxides(Nd nO m,Sm nO m,Gd nO m,La nO m)for rosin esterifications are studied,and factors affecting the reactions are discussed in detail.The esterifying process for about 2～6?h at temperature 200～260?℃ in the presence of catalysts(0.33?%～ 0.83?% based on the weight of the starting rosin) provide esters with increased oxidation stability and improved color.Moreover,the esterification process is relatively straight forward,requiring no additional post treatment such as neutralization,as required in the acid catalyzed process.

关 键 词：松香 树脂酸 稀土金属氧化物 酯化反应 催化 

分 类 号：TQ351.471[化学工程]