摘要
以脱氢芳樟醇选择性加氢合成芳樟醇减压精馏残液为原料,在不同反应温度、氢气压力、催化剂用量等实验条件下,考察Lindlar催化剂、RaneyNi、5%Pd/C对残液中的芳樟醇、二氢芳樟醇加氢反应合成四氢芳樟醇的影响,通过GC/MS、1HNMR确定了反应主要产物。以5%Pd/C为催化剂,反应温度90～92℃,氢气压力2.0MPa,反应时间4h,m(催化剂)∶m(芳樟醇减压精馏残液)=1.2∶100,残液中的芳樟醇、二氢芳樟醇质量分数分别为59.2%、38.3%,残液合成四氢芳樟醇反应收率96.3%,反应液中的四氢芳樟醇质量分数为96.5%。
A process for the synthesis of tetrahydrolinalool from the residue of linalool rectification was studied.The residue contains dihydrolinalool and linalool.The synthetic process was investigated under different conditions of temperature,hydrogen pressure and the weight ratio of catalyst to reactant.Catalyst is the Lindlar catalyst,Raney Ni and 5%Pd/C.The main components of product were determined by GC/MS or 1H NMR spectra.With reaction conditions of temperature 90～92 ℃ and hydrogen pressure 2.0MPa for 4h,tetrahydrolinalool was obtained in 96.3% yield and 96.5% purity from the residue containing 38.3% dihydrolinalool and 59.2% linalool under the catalysis of 5%Pd/C.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2010年第5期866-870,共5页
Chemical Industry and Engineering Progress
