Catalytic decomposition of gaseous PCDD/Fs over V2O5/TiO2-CNTs catalyst: Effect of NO and NH3 addition

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Title:	Catalytic decomposition of gaseous PCDD/Fs over V2O5/TiO2-CNTs catalyst: Effect of NO and NH3 addition
Authors:	張木彬;Wang, Qiulin;Hung, Pao Chang;Lu, Shengyong;Chang, Moo Been
Contributors:	工學院環境工程研究所
Keywords:	activation energy;Adsorption;Air Pollutants - chemistry;Air Pollution - prevention & control;ammonia;Ammonia - chemistry;Carbon nanotubes;Catalysis;catalysts;Catalytic decomposition;Dibenzofurans, Polychlorinated - chemistry;emissions;Incineration;industry;Nanotubes, Carbon - chemistry;nitric oxide;Nitric Oxide - chemistry;NOx;PCDD/Fs;polychlorinated dibenzodioxins;Polychlorinated Dibenzodioxins - chemistry;polychlorinated dibenzofurans;Simultaneous control;Temperature;Titanium - chemistry;titanium dioxide;vanadium;Vanadium Compounds - chemistry;waste incineration
Date:	2016-09-01
Issue Date:	2026-04-23 15:00:01 (UTC+8)
Publisher:	Elsevier Ltd.;England: Elsevier Ltd
Abstract:	摘要： There is a strong need for a control technology that simultaneously achieving the abatement of PCDD/Fs (polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans) and nitrogen oxides (NOx) emissions in waste incineration industry. TiO2 and carbon nanotubes (CNTs) were used as composite carriers to support vanadium oxide as an innovative catalyst to simultaneously control PCDD/Fs and NO emissions. The removal efficiencies (RE) of PCDD/Fs by V2O5/TiO2-CNTs catalyst under a space velocity (SV) of 20,000 h−1 reaches 99.9% at 150 °C and adsorption is supposed to be the main mechanism at this temperature. The influence of NONH3 reaction on PCDD/Fs catalytic reaction is investigated. The kinetics analysis exhibits that the addition of NO and NH3 reduces the activation energies for OCDD (octachlorodibenzo-p-dioxin) and OCDF (octachlorodibenzofuran) decomposition to 3.6 kJ/mol and 5.4 kJ/mol respectively. [Display omitted] •Catalytic decomposition of gaseous PCDD/Fs over V2O5/TiO2-CNTs composite catalysts.•The removal efficiency of PCDD/Fs reaches 99.9% at 150 °C while adsorption is the main reason.•NH3 restricts the adsorption of PCDD/Fs on catalyst, hence, reduces the removal efficiency.•The positive effect of NO is due to the oxidation of NO to NO2 that speeds up the catalyst reoxidation.•The activation energies for OCDD/F via catalysis are evidently reduced in the addition of NO and NH3. 其他題名： Chemosphere 出版者： England: Elsevier Ltd 出版日期： 2016-09 出處： Chemosphere (Oxford), 2016-09, Vol.159, p.132-137 版權： 2016 Elsevier Ltd 版權： Copyright © 2016 Elsevier Ltd. All rights reserved. 識別號： ISSN: 0045-6535 識別號： EISSN: 1879-1298 識別號： DOI: 10.1016/j.chemosphere.2016.05.072 識別號： PMID: 27285382
Appears in Collections:	[Graduate Institute of Environmental Engineering ] journal & Dissertation

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