期刊
CHEMICAL ENGINEERING JOURNAL
卷 200, 期 -, 页码 113-121出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.06.004
关键词
MCM-41; Polyoxometalate; Lacunary Keggin encapsulated surfactant; Oxidative desulfurization; FCC cycle oil
Highly ordered mesoporous material (Bu4N)(4)H-3(PW11O39)/MCM-41 with 10, 18, and 25 wt.% (Bu4N)(4)H-3(PW11O39) loadings was prepared by impregnation method in acidic media under reflux conditions, and characterized by XRD, HRTEM, Nitrogen adsorption/desorption, FT-IR, P-31 CP-MAS NMR, XPS, sEm and TEM. The characterization results revealed that (Bu4N)(4)H-3(PW11O39) was homogeneously dispersed on MCM-41 surface without effecting its mesoporous structure (even at high loadings). Nitrogen adsorption/desorption results showed that the material possessed high surface area (805-912 m(2)(g), pore volume (0.65-0.19 cm(3)/g) and pore diameter (2.2-3.0 nm). Wide angle XRD and P-31 CP-MAS NMR results revealed that (Bu4N)(4)H-3(PW11O39) was grafted onto silica surface through W-Si-O linkage and its structural integrity was maintained during preparation method. The material was found to be highly active and reusable catalyst for oxidative desulfurization (ODS) of organosulfur compounds and desulfurized almost 100% of Dibenzothiophene (DBT) and thiophene under mild reaction conditions. When the catalyst was applied for ODS of FCC cycle oil a sulfur removal of 97.2% was achieved. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据