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Characteristics of titania supported copper oxide catalysts for wet air oxidation of phenol.
J Hazard Mater. 2007 Jul 31; 146(3):610-6.JH

Abstract

Various techniques have been used to characterize the CuO(x)/TiO(2) catalysts with different copper loading. Surface area, pore volume and pore size distribution of the prepared catalysts were estimated from nitrogen adsorption isotherm. Temperature programmed reduction (TPR), X-ray diffraction (XRD), electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES) experiments were performed to investigate the chemical state of the copper species. The chemical state of copper in the CuO(x)/TiO(2) catalysts varied with copper loading (1-25wt.%): highly dispersed Cu(2+) cluster for 1 and 5wt.%, and bulk CuO for 7-25wt.%. The activity and mineralization selectivity of the CuO(x)/TiO(2) catalysts increased with copper loading up to 20wt.%, and remained almost constant for higher copper loading. The optimum copper loading was 20wt.% for the wet air oxidation of phenol over the CuO(x)/TiO(2) catalysts in this work. The stability of the CuO(x)/TiO(2) catalysts with different copper loading was also studied with respect to carbonaceous deposits and copper leaching.

Authors+Show Affiliations

Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17513049

Citation

Kim, Kyoung-Hun, and Son-Ki Ihm. "Characteristics of Titania Supported Copper Oxide Catalysts for Wet Air Oxidation of Phenol." Journal of Hazardous Materials, vol. 146, no. 3, 2007, pp. 610-6.
Kim KH, Ihm SK. Characteristics of titania supported copper oxide catalysts for wet air oxidation of phenol. J Hazard Mater. 2007;146(3):610-6.
Kim, K. H., & Ihm, S. K. (2007). Characteristics of titania supported copper oxide catalysts for wet air oxidation of phenol. Journal of Hazardous Materials, 146(3), 610-6.
Kim KH, Ihm SK. Characteristics of Titania Supported Copper Oxide Catalysts for Wet Air Oxidation of Phenol. J Hazard Mater. 2007 Jul 31;146(3):610-6. PubMed PMID: 17513049.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characteristics of titania supported copper oxide catalysts for wet air oxidation of phenol. AU - Kim,Kyoung-Hun, AU - Ihm,Son-Ki, Y1 - 2007/04/20/ PY - 2007/5/22/pubmed PY - 2007/9/28/medline PY - 2007/5/22/entrez SP - 610 EP - 6 JF - Journal of hazardous materials JO - J Hazard Mater VL - 146 IS - 3 N2 - Various techniques have been used to characterize the CuO(x)/TiO(2) catalysts with different copper loading. Surface area, pore volume and pore size distribution of the prepared catalysts were estimated from nitrogen adsorption isotherm. Temperature programmed reduction (TPR), X-ray diffraction (XRD), electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES) experiments were performed to investigate the chemical state of the copper species. The chemical state of copper in the CuO(x)/TiO(2) catalysts varied with copper loading (1-25wt.%): highly dispersed Cu(2+) cluster for 1 and 5wt.%, and bulk CuO for 7-25wt.%. The activity and mineralization selectivity of the CuO(x)/TiO(2) catalysts increased with copper loading up to 20wt.%, and remained almost constant for higher copper loading. The optimum copper loading was 20wt.% for the wet air oxidation of phenol over the CuO(x)/TiO(2) catalysts in this work. The stability of the CuO(x)/TiO(2) catalysts with different copper loading was also studied with respect to carbonaceous deposits and copper leaching. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17513049/Characteristics_of_titania_supported_copper_oxide_catalysts_for_wet_air_oxidation_of_phenol_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)00552-3 DB - PRIME DP - Unbound Medicine ER -