催化氢化3-蒈烯合成蒈烷反应的研究

Synthesis of Carane by Catalytic Hydrogenation of 3-Carene

研究了某些特殊松节油中的成分3-蒈烯在带机械搅拌高压釜中制备蒈烷的反应。用Raney Ni与Pd/C作为催化剂,在用量4%～10%、3～12 h、60～180℃和3～9 MPa区间进行单因素试验得到的优化反应条件为:催化剂Raney Ni用量为3-蒈烯质量的6%,在温度100℃与压力9 MPa反应3 h,3-蒈烯转化率99.5%,目的产物蒈烷的平均产率为96.7%,蒈烷选择性为92.8%。

Hydrogenation of 3-carene which is a component of some special turpentine to prepare carane was studied in an autoclave with a mechanical stirrer.The single factor experiment was carried out,while Raney Ni and Pd/C were used under the conditions of catalysts dosage of 4 %-10 %,time 3-12 h,temperature 60-180 ℃ and the hydrogen pressure 3-9 MPa.It resulted in the optimal reaction conditions as 6 % of Raney Ni based on the mass of 3-carene,pressure 9 MPa,temperature 100 ℃,and time 3 h.At these conditions,the yield of carane reached 96.7 % with a selectivity of 92.8 % and a conversion rate of 99.5% of carene.