兰州大学机构库 >化学化工学院
Effects of surface acidities of MCM-41 modified with MoO3 on adsorptive desulfurization of gasoline
Shao, XC; Zhang, XT; Yu, WG; Wu, YY; Qin, YC; Sun, ZL; Song, LJ; Song, LJ (reprint author), ShiHua Univ, Key Lab Petrochem Catalyt Sci & Technol, Fushun 113001, Peoples R China.
收录类别SCIE ; EI
2012-12-15
发表期刊APPLIED SURFACE SCIENCE
卷号263
出版者ELSEVIER
出版地AMSTERDAM
摘要A series of MCM-41 samples containing molybdenum oxide as active species in the mesoporous channels loaded by spontaneous monolayer dispersion (SMD) and impregnation (IM) have been prepared and characterized using XRD, N-2 adsorption-desorption analysis, Fourier transform infrared spectroscopy (FTIR) and intelligent gravimetric analyzer (IGA). The relative number of hydroxy on the adsorbents was investigated by in situ FTIR. Surface acidities of the adsorbents were studied by infrared spectroscopy of adsorbed pyridine and correlated with reactivity for adsorptive desulfurization. The IGA technique was employed to investigate adsorption behavior of thiophene and benzene on the adsorbents at 303 K. It is shown that MoO3 can be highly dispersed up to 0.2 g g(-1) in the MCM-41 channels by the SMD strategy with the ordered mesoporous structure of the MoMM samples remaining intact. The ordered mesostructure of MCM-41 is, however, destroyed at higher MoO3 contents of 0.26 and 0.32 g g(-1) with particle sizes of 1.2 nm and 3.6 nm, respectively, observed. For the MoMI(0.2) sample prepared by the IM method, the aggregation of the MoO3 particles takes place with a particle size of 6.5 nm obtained. The results are also revealed that the dispersion extent of the MoO3 species is related to the abundant surface hydroxy of MCM-41. The host species and guest species undergo solid-state reaction to form Si-O-Mo bonds in the mixtures which enhance both the Lewis acid and Bronsted acid of the samples. It has been concluded that the surface acidities of the sorbents contributes to the desulfurization performance which has also been investigated in this study. The octahedral coordinated species (Mo7O246-) are the adsorptive active species for desulfurization compared with the tetrahedral coordinated ones (MoO42-). (C) 2012 Published by Elsevier B.V.
关键词MoO3 MCM-41 Adsorptive desulfurization Spontaneous monolayer dispersion in situ FTIR Pyridine
作者部门
[Shao, Xinchao;
Zhang, Xiaotong;
Yu, Wenguang;
Wu, Yuye;
Qin, Yucai;
Sun, Zhaolin;
Song, Lijuan] Liaoning ShiHua Univ, Key Lab Petrochem Catalyt Sci & Technol, Fushun 113001, Peoples R China;
[Qin, Yucai;
Song, Lijuan] China Univ Petr E China, Coll Chem & Chem Engn, Qingdao 257061, Shandong, Peoples R China;
[Sun, Zhaolin] Lanzhou Univ, Sch Chem & Chem Engn, Lanzhou 730000, Peoples R China...更多
学科领域Chemistry ; Materials Science ; Physics
所属项目编号National Natural Science Foundation of China [20976077, 21076100] ; Ministry of Science and Technology of the People's Republic of China under the National Basic Research Program of China (973 Program) [2007CB216403] ; Innovation Team of Liaoning Province Colleges
资助项目国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划)
项目资助者National Natural Science Foundation of China [20976077, 21076100]; Ministry of Science and Technology of the People's Republic of China under the National Basic Research Program of China (973 Program) [2007CB216403]; Innovation Team of Liaoning Province Colleges ; NSFC ; MOST
DOI10.1016/j.apsusc.2012.07.142
ISSN0169-4332
文章类型Article
语种英语
WOS记录号WOS:000311217500001
EI记录号20124815712365
第一机构
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文献类型期刊论文
条目标识符http://ir.lzu.edu.cn/handle/262010/75245
Collection化学化工学院
通讯作者Song, LJ (reprint author), ShiHua Univ, Key Lab Petrochem Catalyt Sci & Technol, Fushun 113001, Peoples R China.
Recommended Citation:
GB/T 7714
Shao, XC,Zhang, XT,Yu, WG,et al. Effects of surface acidities of MCM-41 modified with MoO3 on adsorptive desulfurization of gasoline[J]. APPLIED SURFACE SCIENCE,2012,263.
APA Shao, XC.,Zhang, XT.,Yu, WG.,Wu, YY.,Qin, YC.,...&Song, LJ .(2012).Effects of surface acidities of MCM-41 modified with MoO3 on adsorptive desulfurization of gasoline.APPLIED SURFACE SCIENCE,263.
MLA Shao, XC,et al."Effects of surface acidities of MCM-41 modified with MoO3 on adsorptive desulfurization of gasoline".APPLIED SURFACE SCIENCE 263(2012).
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