Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen

	Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen
	Chen, Xing 1,2; Zhao, Wenguang 1; Wang, Feng 1; Xu, Jie 1
刊名	journal of natural gas chemistry
	2012-09-01
卷号	21 期号:5 页码:481-487
关键词	benzene phenol selective oxidation vanadium SBA-15 molecular oxygen
通讯作者	徐杰
产权排序	1,1
英文摘要	preparation of dispersed transition metal oxides catalyst with low oxidation state still remains a challenging task in heterogeneous catalysis. in this study, vanadium oxides supported on zeolite sba-15 have been prepared under hydrothermal condition using v2o5 and oxalic acid as sources of vanadium and reductant, respectively. the structures of samples, especially the oxidation state of vanadium, and the surface distribution of vanadium oxide species, have been thoroughly characterized using various techniques, including n-2-physisorption, x-ray diffraction (xrd), transmission electron microscopy (tem). x-ray photoelectron spectroscopy (xps), uv-visible spectra (uv-vis) and uv-visible-near infrared spectra (uv-vis-nir). it is found that the majority of supported vanadium was in the form of vanadium(iv) oxide species with the low valence of vanadium. by adjusting hydrothermal treatment time, the surface distribution of vanadium(iv) oxide species can be tuned from vanadium(iv) oxide cluster to crystallites. these materials have been tested in the hydroxylation of benzene to phenol in liquid-phase with molecular oxygen in the absence of reductant. the catalyst exhibits high selectivity for phenol (61%) at benzene conversion of 4.6%, which is a relatively good result in comparison with other studies employing molecular oxygen as the oxidant.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; energy & fuels ; engineering, chemical
研究领域[WOS]	chemistry ; energy & fuels ; engineering
关键词[WOS]	selective hydroxylation ; phase hydroxylation ; oxidation ; dioxygen ; acid ; solvent ; silica ; ions
收录类别	SCI
语种	英语
WOS记录号	WOS:000310415000001
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/118123]
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, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xing,Zhao, Wenguang,Wang, Feng,et al. Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen[J]. journal of natural gas chemistry,2012,21(5):481-487.
APA	Chen, Xing,Zhao, Wenguang,Wang, Feng,&Xu, Jie.(2012).Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen.journal of natural gas chemistry,21(5),481-487.
MLA	Chen, Xing,et al."Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen".journal of natural gas chemistry 21.5(2012):481-487.