Abstract

A new heterogeneous catalyst containing two types of active sites, sulfo group and ammonium heptamolybdate, on ASKG silica gel support was synthesized. The influence of oxidation conditions (temperature, reactant ratio, reaction time) on the conversion of a model substrate, dibenzothiophene (DBT), was examined. Conditions were found for exhaustive oxidation of DBT. The catalyst synthesized is stable under the oxidation conditions and preserves its activity in five oxidation cycles. The combination of two types of active sites not only considerably enhances the catalyst performance but also reduces to a minimum the possible washout of molybdenum compounds from the support surface.

中文翻译：

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具有布朗斯台德酸位点的高性能多相氧化脱硫催化剂

摘要

在ASKG硅胶载体上合成了一种含有磺基和七钼酸铵两种活性位点的新型多相催化剂。研究了氧化条件（温度、反应物比例、反应时间）对模型底物二苯并噻吩 (DBT) 转化的影响。找到了彻底氧化 DBT 的条件。合成的催化剂在氧化条件下是稳定的，并在五个氧化循环中保持其活性。两种活性位点的组合不仅显着提高了催化剂性能，而且将钼化合物从载体表面洗掉的可能性降至最低。