Superhydrophobic SiO2-based nanocomposite modified with organic groups as catalyst for selective oxidation of ethylbenzene

	Superhydrophobic SiO2-based nanocomposite modified with organic groups as catalyst for selective oxidation of ethylbenzene
	Chen, Chen 1; Shi, Song 1; Wang, Min 1; Ma, Hong 1; Zhou, Lipeng 2; Xu, Jie 1
刊名	journal of materials chemistry a
	2014
卷号	2 期号:21 页码:8126-8134
通讯作者	徐杰
英文摘要	a surface organic modification strategy is utilized to design and prepare a series of superhydrophobic sio2-based nanocomposites with cobalt ions in the bulk phase and different organic groups on the surface. physical properties such as bet surface area, surface hydrophilicity/hydrophobicity, and water adsorption amount changed significantly with the introduction of organic groups of various chain lengths, which was confirmed by tem, sem, ftir, si-29-nmr, n-2 adsorption-desorption, sessile water contact angle, and tg-dta measurements. surface hydrophilicity/hydrophobicity altered from hydrophilic to superhydrophobic with an increase in carbon chain length, which showed an obvious effect on the catalytic performance in selective oxidation of hydrocarbons such as ethylbenzene. superhydrophobicity was guaranteed for high catalytic activity, and the carbon chain length of the organic group was also an important factor. superhydrophobic pr-co-sio2 that contained the propyl group was the most efficient catalyst, and the conversion of ethylbenzene reached 70.4% with o-2 as an oxidant under solvent-free conditions at 393 k for 7 h, which is nearly nine times that of the hydrophilic co-sio2 without surface organic modification.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; energy & fuels ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; energy & fuels ; materials science
关键词[WOS]	molecular-sieve catalysts ; hydrocarbon oxidation ; aerobic oxidation ; carbon nanotubes ; silica ; oxygen ; cyclohexane ; surface ; nanoparticles ; performance
收录类别	SCI
语种	英语
WOS记录号	WOS:000335924100066
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/144422]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Zhengzhou Univ, Dept Chem, Inst Catalysis, Zhengzhou 450001, Peoples R China
推荐引用方式 GB/T 7714	Chen, Chen,Shi, Song,Wang, Min,et al. Superhydrophobic SiO2-based nanocomposite modified with organic groups as catalyst for selective oxidation of ethylbenzene[J]. journal of materials chemistry a,2014,2(21):8126-8134.
APA	Chen, Chen,Shi, Song,Wang, Min,Ma, Hong,Zhou, Lipeng,&Xu, Jie.(2014).Superhydrophobic SiO2-based nanocomposite modified with organic groups as catalyst for selective oxidation of ethylbenzene.journal of materials chemistry a,2(21),8126-8134.
MLA	Chen, Chen,et al."Superhydrophobic SiO2-based nanocomposite modified with organic groups as catalyst for selective oxidation of ethylbenzene".journal of materials chemistry a 2.21(2014):8126-8134.