Synthesis of ordered meso/macroporous H sub(3)PW sub(12)O sub(40)/SiO sub(2) and its catalytic performance in oxidative desulfurization
Hierarchically ordered meso/macroporous phosphotungstic acid/SiO sub(2) (HPW/SiO sub(2)) catalysts have been synthesized viathe dual-templating method and used as a catalyst for oxidative desulfurization. The as-synthesized catalysts possess ordered macropores and well-ordered hexagonal mesopores wi...
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Published in | RSC advances Vol. 6; no. 59; pp. 53860 - 53866 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
01.06.2016
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Subjects | |
Online Access | Get full text |
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Summary: | Hierarchically ordered meso/macroporous phosphotungstic acid/SiO sub(2) (HPW/SiO sub(2)) catalysts have been synthesized viathe 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 sub(2) catalysts show superior catalytic performance with obvious improvement of the desulfurization rate compared to mesoporous HPW/SiO sub(2) and macroporous HPW/SiO sub(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. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-2 |
ISSN: | 2046-2069 |
DOI: | 10.1039/c6ra09154g |