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Experimental investigation into the adherence of novel coating of auto-catalyst on cordierite supports

David O. Obada (Department of Mechanical Engineering, Ahmadu Bello University, Zaria, Nigeria)
Muhammad Dauda (Department of Mechanical Engineering, Ahmadu Bello University, Zaria, Nigeria)
Fatai O. Anafi (Department of Mechanical Engineering, Ahmadu Bello University, Zaria, Nigeria)
Abdulkarim S. Ahmed (Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria)
Olusegun A. Ajayi (Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria and Department of Chemical and Petroleum Engineering, Afe Babalola University, Ado-Ekiti, Nigeria)

World Journal of Engineering

ISSN: 1708-5284

Article publication date: 5 December 2016

Abstract

Purpose

A structural and textural characterization study has been performed to investigate the adherence of zeolite-based catalyst washcoated onto honey-comb-type cordierite monoliths. The supports were characterized by the scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS), X-ray diffraction (XRD) and Brunauer–Emmett–Teller (BET) techniques.

Design/methodology/approach

SEM/EDS provided quantitative estimate of the washcoated monolith as the elemental composition of catalyst coating. The XRD pattern deduced that the zeolite-based catalysts were successfully mounted on the cordierite support, showing the characteristic peaks of zeolites (Zeolite Socony Mobil–5; ZSM-5) at Braggs angles of 7.88°, 8.76°, 23.04°, 23.88° and 24.36°, whereas the characteristic peak of cordierite is seen at a Braggs angle of 10.44°.

Findings

The BET results proved that a monolayer of zeolite may serve the need for surface area and porosity. This was evident in the increase of surface area of washcoated support as against the bare support. The obtained isotherms were of Type IV, illustrating the presence of mesopores. The adsorption and desorption isotherm branches coincided over the interval 0 < P/P0 < 0.50 and 0 < P/P0 < 0.45, showing N2 reversible adsorption for the two samples, respectively.

Originality/value

It was concluded that the composite materials which are ZSM-5 (Si/Al = 25) and precursors of the transition salts of copper, zinc and ceria powders were deposited on the catalyst supports, establishing the success of the coating procedure relative to the adherence of the catalyst compositions on the ceramic support.

Keywords

Citation

Obada, D.O., Dauda, M., Anafi, F.O., Ahmed, A.S. and Ajayi, O.A. (2016), "Experimental investigation into the adherence of novel coating of auto-catalyst on cordierite supports", World Journal of Engineering, Vol. 13 No. 6, pp. 469-475. https://doi.org/10.1108/WJE-09-2016-0078

Publisher

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Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited