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中文摘要：
以二苯并噻吩（DBT）为模型化合物和油溶性过氧化羟基异丙苯（CHP）作氧化剂，考察了Keggin结构的磷钼酸（H3PMo12O40）及其钠盐（Na3PMo12O40）的氧化脱硫性能，并与硅钼酸（H4SiMo12O40）及磷钨酸（H3PW12O40）氧化脱硫性能进行对比。结果表明，H3PMo12O40／SiO2氧化脱硫恬性远高于H4SiMo12O40／SiO1，而H3PW12O40／SiO2则基本没有活性。SiO2担载的磷钼酸及其钠盐催化DBT氧化脱硫反应活性与非负载型催化剂相比有了明显的提高。非负载型磷钼酸及其钠盐以及H3PMo12O40／SiO2在催化DBT氧化脱硫反应中都表现出一定的活性诱导期，而Na2PMo12O40／SiO2则因其较高的反应活性和CHP有效利用率，并且没有明显诱导期，在DBT氧化脱硫反应中表现出良好的催化性能。
英文摘要：
The oxidative desulfurization （ODS） of DBT with cumene hydroperoxide （CHP） as the oxidizing agent over Keggin type H3PMO12 O40 and NaaPMO12 O40 were studied by comparing with H4 SiMO12 O40 and H：, PW12 O40. The results indicated that H3 PMO12 O40/SiO2 exhibited much higher ODS activity than H4SiMo12O40/SiO2, whereas HaPW12O40/SiO2 showed no activity. The ODS activities of SiO2 supported Ha PMO12 O40 and Na3 PMO12 O40 were much higher than their unsupported counter partners. An induction period was observed during DBT ODS over H3PMO12 O40, Na2PMo2O40 and H3PMo12 O40/SiO2. Among the catalysts studied in this work, SiO2 supported Na3 PMO12 O40 showed the best catalytic performance due to its high ODS activity, long lifetime, and the absence of the induction period.
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