摘要
传统的蓖麻油裂解制备癸二酸工艺因使用稀释剂邻甲酚和催化剂铅氧化物而导致严重的环境污染。以对环境温和的液体石蜡作稀释剂,筛选环境友好型催化剂制备癸二酸,开发清洁生产工艺,研究发现,采用氧化铁作催化剂可取得良好的裂解反应效果。最佳工艺条件为:催化剂用量为蓖麻油质量的1.00%,V(稀释剂)∶V(蓖麻油)=4∶1,V(碱液)∶V(蓖麻油)=1∶1,反应温度280℃,反应时间4 h。在此条件下,癸二酸收率达67.2%,分离后纯度达到99.0%。表明氧化铁作为催化剂配合液体石蜡作稀释剂可望开发一条蓖麻油裂解制备癸二酸的清洁生产工艺。
The traditional preparation process of sebacic acid by cracking castor oil could cause serious environment pollution because of using o-cresol as the diluent and lead oxide as the catalyst.Using liquid paraffin as the diluent,an environmental friendly catalyst for preparation of sebacic acid was screened and the clean preparation process of sebacic acid was investigated.The results showed that iron oxide as the catalyst exhibited good cracking effect;sebacic acid yield of 67.2% and the purity of 99.0% after separation were attained under the optimum condition as follows：catalyst dosage 1.00% of castor oil mass,V（diluent）∶V（castor oil）=4∶1,V（sodium hydroxide）∶V（castor oil）=1∶1,reaction temperature 280 ℃ and reaction time 4 h.Using iron oxide as the catalyst and liquid paraffin as the diluent,a clean preparation process of sebacic acid by cracking castor oil will be expected to be developed.
出处
《工业催化》
CAS
2012年第4期68-71,共4页
Industrial Catalysis
关键词
有机合成化学
蓖麻油
癸二酸
氧化铁
催化碱解
清洁工艺
organic synthesis chemistry
castor oil
sebacic acid
iron oxide
alkali catalytic cracking
clean process
