有机化学 ›› 2000, Vol. 20 ›› Issue (5): 805-807. 上一篇    下一篇

研究论文

稀土固体超强酸SO~4^2^-/TiO~2/La^3^+催化合成水杨酸 异丁酯

林进   

  1. 河北师范大学化学系.石家庄(050016)
  • 出版日期:2000-10-25 发布日期:2000-10-25

The catalytic synthesis of isobutyl salicylate using rare-earth solid superacid SO~4^2^-/TiO~2/La^3^+

Lin Jin   

  1. Hebei Teachers Univ, Dept Chem.Shijiazhuang(050016)
  • Online:2000-10-25 Published:2000-10-25

研究了以稀土固体超强酸SO~4^2^-/TiO~2/La^3^+为催化剂,水杨酸和异丁醇为原料合成水杨酸异丁酯,并考察了影响反应的因素。结果表明,醇酸比为3:1,催化剂用量为1.0g(水杨酸为0.1mol的情况下),带水剂苯为15mL,反应时间为3.0h是最适宜的反应条件,酯化率达96.2%。

关键词: 稀土, 超强酸, 二氧化钛, 镧离子, 催化, 香精, 酯化, 水杨酸, 异丁醇, 固体酸催化剂, 水杨酸异丁酯

The synthesis of isobutyl salicylate with isobutyl alcohol and salicylic acid as reactants and rare-earth solid superacid SO~4^2^- /TiO~2/La^3^+ as catalyst have been studied. The factors that had influence on the reaction were investigated. The results showed that the optimal conditions were (for 0.1 mol of salicylic acid) using 1.0 g of catalyst and 15 mL of benzene (to remove water) with the molar ratio of isobutyl alcohol to salicylic acid being 3:1 and the reaction time being 3.0 h; The yield of isobutyl salicylate under such conditions was about 96.2%.

Key words: RARE EARTH, SUPERACID, TITANIUM DIOXIDE, LANTHANUM ION, CATALYSIS, ESSENCES, ESTERIFICATION, SALICYLIC ACID, ISOBUTANOL, SOLID ACID CATALYST

中图分类号: