NiCoB/TiO2非晶态合金催化松节油加氢反应

Hydrogenation of Turpentine Catalyzed by NiCoB/TiO2 Amorphous AlloyHydrogenation of Turpentine Catalyzed by NiCoB/TiO2 Amorphous Alloy

摘要:

采用金属诱导化学镀法制备NiCoB/TiO2非晶态合金催化剂，用X射线衍射(XRD)、扫描电镜(SEM)、电子能谱(EDS)、电感耦合等离子发射光谱(ICP)和X射线光电子能谱(XPS)对催化剂进行了表征。结果表明：NiCoB以非晶态的形式负载在TiO2载体上，其分散性较好，平均粒径约为120nm。将该催化剂应用于松节油催化加氢制备顺式蒎烷，对反应条件进行了优化，最佳反应条件为：反应温度145 ℃，氢气压力4.5 MPa，催化剂用量占原料质量分数10.0%，反应时间200 min。在该条件下，α-蒎烯转化率达99.23%，顺式蒎烷对映选择性为95.53%，产物收率达94.80%。

Abstract:

NiCoB/TiO2 amorphous alloy catalysts were prepared by the means of the metal inducing electroless plating and these catalysts were characterized by XRD, SEM , EDS, ICP and XPS. The results showed that NiCoB was preferably supported on TiO2 in the form of amorphous alloy, which was good dispersibility with an average diameter of 120 nm or so. Their catalytic properties were evaluated for the hydrogenation of turpentine to cis-pinaneand the factors of affecting the reaction were optimized. The conversion of α-pinene was up to 99.23%, the selectivity of cis-pinane was 95.53% and the yield of cis-pinane was 94.80% at 145 °C for 200 min, 4.5 MPa hydrogen pressure and a catalyst of 10%.