负载型CuO-NiO催化剂 催化合成Guerbet十六醇性能

Catalytic synthesis of C16 Guerbet alcohol by using supported CuO-NiO catalyst

摘要:

以正辛醇为原料，考察了催化剂载体种类、CuO-NiO负载量和n(CuO)∶n(NiO)摩尔比对Guerbet十六醇催化合成反应的影响，在该基础上，以优选的30 % CuO-NiO/CaCO3（CuO-NiO负载量，即CuO与NiO所占质量百分数，为30%；n(CuO)∶n(NiO)摩尔比为1∶2）为催化剂，进一步优化了反应条件（反应温度、反应时间和催化剂用量）。结果表明，CuO-NiO/CaCO3-KOH催化体系能有效地催化正辛醇合成Guerbet十六醇，在CuO-NiO/CaCO3、KOH投料量分别为0.10 %和3.0 %（催化剂投料量为催化剂质量与正辛醇质量百分比）时，240 ℃下反应1 h，Guerbet十六醇的收率和选择性分别为83.5 %和87.3 %。

Abstract:

C16 Guerbet alcohol (2-hexyl-1-decanol) was synthesized from n-octanol by using supported CuO-NiO catalyst with KOH. The effects of catalyst support, CuO-NiO loading (%) and CuO/NiO molar ratio on the synthesis were investigated so that the best CuO-NiO catalyst was chosen (CaCO3 supported, CuO-NiO loading 30 w% and CuO/NiO molar ratio is 1∶2). Besides, the effects of reaction temperature, reaction time and catalyst dosage (mass percentage of catalyst and n-octanol) on the reaction were studied. The results indicate that C16 Guerbet alcohol is able to be produced in the presence of CuO-NiO catalyst and KOH. When C16 Guerbet alcohol was synthesized under reaction temperature 240 ℃for 1 h with 0.1 % best CuO-NiO catalyst and 3.0 % KOH added, the yield and the selectivity reached 83.5 % and 87.3 %, respectively.