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Liquid phase oxidation of toluene to benzaldehyde with molecular oxygen over copper-based heterogeneous catalysts
Wang, F; Xu, J; Li, XQ; Gao, J; Zhou, LP; Ohnishi, R; Xu J(徐杰); Xu J(徐杰)
KeywordBenzaldehyde C-h Bond Activation Heterogeneous Catalysis Liquid Phase Molecular Oxygen Toluene
Source PublicationADVANCED SYNTHESIS & CATALYSIS
2005-12-01
DOI10.1002/adsc.200505107
Volume347Issue:15Pages:1987-1992
Indexed BySCI ; CCR
SubtypeArticle
Department2
Funding Project204
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Applied ; Chemistry, Organic
WOS Research AreaChemistry
WOS KeywordSELECTIVE OXIDATION ; HYDROCARBONS ; RADICALS ; CRESOL
AbstractWe conducted the liquid phase oxidation of toluene with molecular oxygen over heterogeneous catalysts of copper-based binary metal oxides. Among the copper-based binary metal oxides, iron-copper binary oxide (Fe/Cu = 0.3 atomic ratio) was found to be the best catalyst. In the presence of pyridine, overoxidation of benzaldehyde to benzoic acid was partially prevented. As a result, highly selective formation of benzaldehyde (86% selectivity) was observed after 2 h of reaction (7% conversion of toluene) at 463 K and 1.0 MPa of oxygen atmosphere in the presence of pyridine. These catalytic performances were similar or better than those in the gas phase oxidation of toluene at reaction temperatures higher than 473 K and under 0.5-2.5 MPa. It was suggested from competitive adsorption measurements that pyridine could reduce the adsorption of benzaldehyde. At a long reaction time of 4 It, the conversion increased to 25% and benzoic acid became the predominant reaction product (72% selectivity) in the absence of pyridine. The yield of benzoic acid was higher than that in the Snia-Viscosa process, which requires corrosive halogen ions and acidic solvents in the homogeneous reaction media. The catalyst was easily recycled by simple filtration and reusable after washing and drying.
Language英语
URL查看原文
WOS IDWOS:000234097100021
Citation statistics
Cited Times:77[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/93139
Collection中国科学院大连化学物理研究所
Corresponding AuthorXu J(徐杰); Xu J(徐杰)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Grad Sch, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Wang, F,Xu, J,Li, XQ,et al. Liquid phase oxidation of toluene to benzaldehyde with molecular oxygen over copper-based heterogeneous catalysts[J]. ADVANCED SYNTHESIS & CATALYSIS,2005,347(15):1987-1992.
APA Wang, F.,Xu, J.,Li, XQ.,Gao, J.,Zhou, LP.,...&徐杰.(2005).Liquid phase oxidation of toluene to benzaldehyde with molecular oxygen over copper-based heterogeneous catalysts.ADVANCED SYNTHESIS & CATALYSIS,347(15),1987-1992.
MLA Wang, F,et al."Liquid phase oxidation of toluene to benzaldehyde with molecular oxygen over copper-based heterogeneous catalysts".ADVANCED SYNTHESIS & CATALYSIS 347.15(2005):1987-1992.
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