Study on Pt-structured anodic alumina catalysts for catalytic combustion of toluene: Effects of competitive adsorbents and competitive impregnation methods

Study on Pt-structured anodic alumina catalysts for catalytic combustion of toluene: Effects of... Article history: Novel competitive impregnation methods were used to prepare high dispersion Pt-structured anodic Received 16 August 2015 alumina catalysts. It is found that competitive adsorbents owning different acidity result in different Pt Received in revised form 27 October 2015 loading amount and also exert great effects on Pt distribution, particle size and redox ability. The suitable Accepted 15 November 2015 adsorption ability of lactic acid led to its best activity for catalytic combustion of toluene. Co-competitive Available online 17 November 2015 and pre-competitive impregnation methods were also compared and the mechanisms of two competitive methods were proposed. Co-competitive impregnation made Pt distribute more uniformly through pore Keywords: channels and resulted in better catalytic activity, because of the weaker spatial constraint effect of lactic Toluene acid. Furthermore, the optimized Pt-structured anodic alumina catalyst also showed a good chlorine- Competitive adsorbent resistance under moisture atmosphere, because water could promote the reaction of dichloromethane Competitive method (DCM) transformation and clean chloride by-products to release more active sites. Chlorine-resistance © 2015 Elsevier B.V. All rights reserved. 1. Introduction drop, negligible scaling effect and good abrasion resistance [13]. Recently, a novel structured monolithic catalyst has attracted Volatile organic compounds (VOCs) are considered as http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Study on Pt-structured anodic alumina catalysts for catalytic combustion of toluene: Effects of competitive adsorbents and competitive impregnation methods

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2015.11.149
Publisher site
See Article on Publisher Site

Abstract

Article history: Novel competitive impregnation methods were used to prepare high dispersion Pt-structured anodic Received 16 August 2015 alumina catalysts. It is found that competitive adsorbents owning different acidity result in different Pt Received in revised form 27 October 2015 loading amount and also exert great effects on Pt distribution, particle size and redox ability. The suitable Accepted 15 November 2015 adsorption ability of lactic acid led to its best activity for catalytic combustion of toluene. Co-competitive Available online 17 November 2015 and pre-competitive impregnation methods were also compared and the mechanisms of two competitive methods were proposed. Co-competitive impregnation made Pt distribute more uniformly through pore Keywords: channels and resulted in better catalytic activity, because of the weaker spatial constraint effect of lactic Toluene acid. Furthermore, the optimized Pt-structured anodic alumina catalyst also showed a good chlorine- Competitive adsorbent resistance under moisture atmosphere, because water could promote the reaction of dichloromethane Competitive method (DCM) transformation and clean chloride by-products to release more active sites. Chlorine-resistance © 2015 Elsevier B.V. All rights reserved. 1. Introduction drop, negligible scaling effect and good abrasion resistance [13]. Recently, a novel structured monolithic catalyst has attracted Volatile organic compounds (VOCs) are considered as

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2016

References

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