eprintid: 12649
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/26/49
datestamp: 2023-11-10 03:27:12
lastmod: 2023-11-10 03:27:12
status_changed: 2023-11-10 01:49:11
type: article
metadata_visibility: show
creators_name: Awad, A.
creators_name: Alnarabiji, M.S.
creators_name: Salam, M.A.
creators_name: Vo, D.-V.N.
creators_name: Setiabudi, H.D.
creators_name: Abdullah, B.
title: Synthesis, Characterisation, and Performance Evaluation of Promoted Ni-Based Catalysts for Thermocatalytic Decomposition of Methane
ispublished: pub
note: cited By 4
abstract: Thermocatalyatic decomposition (TCD) of methane to COX free hydrogen and carbon nanofibre (CNF) was investigated over a series of self-designed monometallic Ni catalyst and bimetallic Ni�Cu and Ni�Pd catalysts. The catalysts were synthesised from the wet impregnation method and characterised using a series of complementary techniques include TGA, XRD, BET, TPR, FESEM, TEM, and Raman Spectroscopy. Despite a substantial reduction of surface area in the promoted catalysts, the catalytic activity of the promoted catalyst was enhanced due to the nature of the process which is a metal-catalysed reaction. As a whole, bimetallic Pd�Ni catalyst with a surface area of 2.76 m2 g�1 possesed the highest conversion of 77  after 6 h reaction. The overall TCD reaction was found to be first-order with the calculated activation energy, Ea of 38 kJ mol�1. The methane consumption rates at 1023 K and 1073 K were 0.5 mol s�1gcat�1 and 0.58�104 mol s�1gcat�1 respectively. Meanwhile, the methane consumption rates improved considerably from 0.58 mol s�1gcat�1 to 0.67�104 mol s�1gcat�1 under the methane partial pressure of 41 kPa. The XRD profile of the fresh catalysts revealed that mixed oxides were formed over the surface of the support upon the addition of Cu and Pd to 50 Ni/Al2O3. Moreover, the formation of carbon nanofibers followed both tip and base growth mechanisms as evident from the TEM images. Larger and wider carbon fibres were found in the Pd promoted catalyst. © 2020 Wiley-VCH GmbH
date: 2020
publisher: Wiley-Blackwell
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092188605&doi=10.1002%2fslct.202001998&partnerID=40&md5=dd764a6246d78744048464c109c08436
id_number: 10.1002/slct.202001998
full_text_status: none
publication: ChemistrySelect
volume: 5
number: 37
pagerange: 11471-11482
refereed: TRUE
issn: 23656549
citation:   Awad, A. and Alnarabiji, M.S. and Salam, M.A. and Vo, D.-V.N. and Setiabudi, H.D. and Abdullah, B.  (2020) Synthesis, Characterisation, and Performance Evaluation of Promoted Ni-Based Catalysts for Thermocatalytic Decomposition of Methane.  ChemistrySelect, 5 (37).  pp. 11471-11482.  ISSN 23656549