采用溶胶-凝胶法和浸渍法制备了La³⁺/CNMS-SO₃H固体酸催化剂，催化剂的优化工艺为：La³⁺浓度为0.021 mol/L、硫酸浸渍浓度为2 mol/L、煅烧温度为500℃；通过BET、NH₃-TPD、Py-FTIR等对催化剂的性质与结构进行表征。探究了单因素对α-蒎烯转化率及正龙脑收率的影响，结果表明，烯酸摩尔比为1：0.5、La³⁺/CNMS-SO₃H质量为松节油质量的8%、温度为100℃、时间为8 h时，正龙脑的收率最高为40.83%，α-蒎烯转化率为100%；催化剂在重复使用6次之后，转化率仍在99%之上，龙脑的收率下降3%。

La³⁺/CNMS-SO₃H,a solid acid catalyst,is prepared by sol-gel method and impregnation method.Its properties and structure are characterized by BET,NH₃-TPD,Py-FTIR,etc.The optimized preparation process for the catalyst is as follows:La³⁺ concentration is 0.021 mol·L^-1,sulfuric acid impregnation concentration is 2 mol·L^-1,and calcination temperature is at 500℃.Impacts of single factor on the conversion of α-pinene and the yield of borneol over the catalyst is explored.Results show that the highest yield of borneol can reach 40.83% and the conversion rate of α-pinene can achieve 100% when the molar ratio of α-pinene to oxalic acid is 1:0.5,the mass of La³⁺/CNMS-SO₃H is 8% that of turpentine,temperature remains at 100℃,and reaction lasts for 8 h.After the catalyst has been used for 6 times,the conversion of α-pinene is still above 99%,and the yield of borneol drops by 3%.

郭炜(1994-),男,硕士研究生,主要从事植物化工研究,531566942@qq.com