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采用水热合成法,以P123为模板剂制备介孔材料SBA-15,然后通过SnCl_4·5H_2O浸渍负载及硫酸浸渍,进一步合成介孔催化剂SO~(2-)_4/Sn/SBA-15。通过IR、TG、SEM和TEM进行表征,并将负载型介孔分子筛SO~(2-)_4/Sn/SBA-15用于催化α-蒎烯的环氧化反应。讨论n(SBA-15)∶n(SnCl_4·5H_2O),催化剂加入量,n(环氧化试剂过氧乙酸)∶n(原料)对环氧化产物得率的影响。结果表明:n(SBA-15)∶n(SnCl_4·5H_2O)为5∶1,催化剂加入量为2.5%,n(CH_3COOOH)∶n(α-蒎烯)=1.2∶1.0时,α-蒎烯的转化率为95.4%,产物2,3-环氧蒎烷的得率为88.82%。
The mesoporous material SBA-15 was prepared by hydrothermal method and P123 as templating agent. The mesoporous catalyst SO 2 -, Sn / SBA-15 was further synthesized by SnCl 4 · 5H 2 O impregnation and sulfuric acid impregnation. The catalysts were characterized by IR, TG, SEM and TEM. The supported mesoporous molecular sieve SO ~ (2 -) _4 / Sn / SBA-15 was used to catalyze the epoxidation of α-pinene. The effect of n (SBA-15): SnCl_4 · 5H_2O, catalyst loading, n (epoxidation reagent peracetic acid): n (feedstock) on the yield of epoxidation products was discussed. The results showed that when the molar ratio of n (SBA-15): n (SnCl_4 · 5H_2O) was 5:1, the amount of catalyst was 2.5% and n (CH_3COOOH) Conversion was 95.4%, the yield of 2,3-epoxypinane was 88.82%.