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 -