Hydrophobic mesoporous silica-supported heteropolyacid induced by ionic liquid as a high efficiency catalyst for the oxidative desulfurization of fuel

Hydrophobic mesoporous silica-supported heteropolyacid induced by ionic liquid as a high efficiency catalyst for the oxidative desulfurization of fuel

Type	Journal Article
Author	Jun Xiong
Author	Wenshuai Zhu
URL	http://pubs.rsc.org/en/content/articlelanding/2015/ra/c4ra14382e
Volume	5
Issue	22
Pages	16847-16855
Publication	RSC Advances
Date	2015-02-05
Abstract	Typically, hydrogen peroxide is used as an oxidant in oxidative desulfurization. However, in order to reach a high level of sulfur removal, large amounts of hydrogen peroxide must be added into the oxidative system. Researchers prepared phosphomolybdic acid immobilized on imidazole-based ionic liquid modified mesoporous SBA-15 (HPMo-IL/SBA-15). The material combines the advantages of H3PMo12O40 (HPMo) and SBA-15. The high special surface area of SBA-15 effectively dispersed the HPMo active species. Results revealed that HPMo could be steadily immobilized across the surface of SBA-15 by using an imidazole-based ionic liquid. At the same time, after the introduction of the imidazole-based ionic liquid, HPMo-IL/SBA-15 material exhibited hydrophobic property. Experiments demonstrated that the hydrophobic catalyst exhibited a high activity in oxidative desulfurization. HPMo-IL/SBA-15 served as not only a high-efficiency catalyst but also an adsorbent.