« Previous Abstract"Effects of High Hydrostatic Pressure Combined with Vacuum-Freeze Drying on the Aroma-Active Compounds in Blended Pumpkin, Mango, and Jujube Juice"    Next Abstract"Analysis of Volatile Organic Compounds in Milk during Heat Treatment Based on E-Nose, E-Tongue and HS-SPME-GC-MS" »

J Environ Sci Health A Tox Hazard Subst Environ Eng

Title:		Catalytic destruction of vinyl chloride over an alumina-supported platinum catalyst
Author(s):		Yuan MH; Chang CC; Chang CY; Liao WC; Shie JL; Chen YH; Ji DR; Wu CH;
Address:		"a Graduate Institute of Environmental Engineering, National Taiwan University , Taipei , Taiwan"
Journal Title:		J Environ Sci Health A Tox Hazard Subst Environ Eng
Year:		2015
Volume:		50
Issue:		11
Page Number:		1187 - 1193
DOI:		10.1080/10934529.2015.1047678
ISSN/ISBN:		1532-4117 (Electronic) 1093-4529 (Linking)
Abstract:		"In this study, vinyl chloride (VC), the primary material for manufacturing polyvinyl chloride (PVC), is decomposed via catalytic oxidation (C-OX) using Pt/gamma-Al2O3 catalyst. The effects of related major factors such as reaction temperature (T) and gas hourly space velocity on the conversion of VC (X) were examined. The values of T for achieving conversions of 50% and 90% are 504 and 580 K with C-OX, respectively, whereas those without Pt/gamma-Al2O3 (i.e., thermal oxidation, T-OX) are 900 and 983 K, respectively, thus indicating that C-OX significantly reduces T for effective oxidation of VC to form CO2, HCl, and Cl2 when compared with T-OX. The mineralizations of carbon in VC to form CO2 are 75.5% and 38% for C-OX and T-OX, respectively, at 90% X. The conversions of chlorine atom in 1,2-dichloroenane (DCEA) to Cl in HCl and Cl2 are approximately 42% and 50.8% for C-OX and T-OX, respectively, at 90% X. These results indicate that the Pt/gamma-Al2O3 catalyst exhibits remarkable performance for the mineralizations to form CO2 even though a proportion of chlorine atoms are adsorbed on the Pt surface. The Eley-Rideal model can be used to describe the experimental results, thus yielding activation energy and frequency factor values of 49.0 kJ mol(-1) and 1.77 x 10(6) s(-1), respectively. The obtained information and kinetic parameters are useful for the rational design and operation of C-OX process for the abatement of VC"
Keywords:		*Aluminum Oxide Catalysis Environmental Policy Industrial Waste Kinetics Oxidation-Reduction *Platinum Taiwan Temperature Vinyl Chloride/*chemistry Catalytic oxidation Pt catalyst chloride volatile organic compound (CVOC) vinyl chloride (VC);
Notes:		"MedlineYuan, Min-Hao Chang, Chia-Chi Chang, Ching-Yuan Liao, Wei-Chu Shie, Je-Lueng Chen, Yi-Hung Ji, Dar-Ren Wu, Chao-Hsiung eng Research Support, Non-U.S. Gov't England 2015/07/21 J Environ Sci Health A Tox Hazard Subst Environ Eng. 2015; 50(11):1187-93. doi: 10.1080/10934529.2015.1047678"