Co-Ni-B/SBA-15催化1-辛烯氢甲酰化活性研究

Study on catalytic performance of Co-Ni-B/SBA-15 for hydroformylation of 1-octene

摘要: 超声辅助浸渍法制备了SBA-15分子筛负载三组分非晶态Co-Ni-B，研究了其对1-辛烯氢甲酰化制壬醛反应的催化性能。SBA-15负载纳米非晶态Co-Ni-B，增加了Co-Ni-B的分散；且非晶态Co-Ni-B转化为晶体的温度升高约280 ℃，耐热稳定性增强。Co-Ni-B/SBA-15催化剂，其中，Co = 17.22%，n(Ni)/n(Co) = 0.157，n(B)/n(Co + Ni) = 0.434，用于120 ℃、5 MPa条件下氢甲酰化反应，间歇反应4 h，1-辛烯完全转化，壬醛选择性91.24%；相比Co-Ni-B，副产物减少一倍。催化剂重复使用五次，活性稳定。

Abstract: SBA-15 zeolite supported amorphous ternary Co-Ni-B was prepared by the ultrasonic-assisted impregnation method for catalyzing the hydroformylation of 1-octene to nonanal. Supporting on SBA-15 increased the dispersion of nano amorphous Co-Ni-B. The crystallization temperature of amorphous Co-Ni-B was elevated by 280 ℃ that improves the thermal stability of Co-Ni-B. Using Co-Ni-B/SBA-15 with Co loading of 17.22% and the ratio of n(Ni)/n(Co) of 0.157 and n(B)/n(Co + Ni) of 0.434, the conversion of 1-octene and the selectivity of nonanal reached 100% and 91.24%, respectively, in the hydroformylation reaction at 120 °C and 5 MPa. The selectivity of side-product was reduced by 1 time compared with that of Co-Ni-B. The Co-Ni-B/SBA-15 is stable after repeated used for 5 times.