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Catalysts 2015, 5(2), 690-702; doi:10.3390/catal5020690

Silica Supported Platinum Catalysts for Total Oxidation of the Polyaromatic Hydrocarbon Naphthalene: An Investigation of Metal Loading and Calcination Temperature

Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, UK
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Academic Editor: Jean-François Lamonier
Received: 16 February 2015 / Revised: 31 March 2015 / Accepted: 14 April 2015 / Published: 22 April 2015
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds)
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Abstract

A range of catalysts comprising of platinum supported on silica, prepared by an impregnation method, have been studied for the total oxidation of naphthalene, which is a representative Polycyclic Aromatic Hydrocarbon. The influence of platinum loading and calcination temperature on oxidation activity was evaluated. Increasing the platinum loading up to 2.5 wt.% increased the catalyst activity, whilst a 5.0 wt.% catalyst was slightly less active. The catalyst containing the optimum 2.5 wt.% loading was most active after calcination in air at 550 °C. Characterisation by carbon monoxide chemisorption and X-ray photoelectron spectroscopy showed that low platinum dispersion to form large platinum particles, in combination with platinum in metallic and oxidised states was important for high catalyst activity. Catalyst performance improved after initial use in repeat cycles, whilst there was slight deactivation after prolonged time-on-stream. View Full-Text
Keywords: catalytic oxidation; naphthalene; platinum; silica; VOCs; PAHs catalytic oxidation; naphthalene; platinum; silica; VOCs; PAHs
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sellick, D.R.; Morgan, D.J.; Taylor, S.H. Silica Supported Platinum Catalysts for Total Oxidation of the Polyaromatic Hydrocarbon Naphthalene: An Investigation of Metal Loading and Calcination Temperature. Catalysts 2015, 5, 690-702.

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