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首页> 外文期刊>RSC Advances >Synthesis of ordered meso/macroporous H3PW12O40/SiO2 and its catalytic performance in oxidative desulfurization
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Synthesis of ordered meso/macroporous H3PW12O40/SiO2 and its catalytic performance in oxidative desulfurization

机译：氧化脱硫中有序甲基溴/大孔H3PW12O40 / SiO2的合成及其催化性能

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摘要

Hierarchically ordered meso/macroporous phosphotungstic acid/SiO _(2) (HPW/SiO _(2) ) catalysts have been synthesized via the dual-templating method and used as a catalyst for oxidative desulfurization. The as-synthesized catalysts possess ordered macropores and well-ordered hexagonal mesopores within the walls of the macroporous cages. The HPW active species are finely dispersed in the silica matrix and retain its Keggin structure. Meso/macroporous HPW/SiO _(2) catalysts show superior catalytic performance with obvious improvement of the desulfurization rate compared to mesoporous HPW/SiO _(2) and macroporous HPW/SiO _(2) . The high performance of the catalyst should be attributed to the structural characteristics of the meso/macropores. Furthermore, the catalyst was recovered and reused for seven runs with only a slight decrease in the catalytic performance.
机译：通过双模板方法合成了分层有序的Meso / macropo磷钨酸/ SiO_（2）（HPW / SiO _（2））催化剂并用作氧化脱硫的催化剂。合成的催化剂具有有序的大孔和在大孔笼壁内的众多六边形的中孔。 HPW活性物质精细地分散在二氧化硅基质中并保持其Keggin结构。 Meso /大孔HPW / SIO _（2）催化剂显示出优异的催化性能，与中孔HPW / SIO_（2）和大孔HPW / SIO_（2）相比，脱硫率明显改善。催化剂的高性能应归因于中文/大孔的结构特征。此外，回收催化剂并重复使用7次，仅在催化性能下轻微降低。

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