Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162021
Title: Kinetic reaction and deactivation studies on thermocatalytic decomposition of methane by electroless nickel plating catalyst
Authors: Chen, Qianqian
Lua, Aik Chong
Keywords: Engineering::Mechanical engineering
Issue Date: 2020
Source: Chen, Q. & Lua, A. C. (2020). Kinetic reaction and deactivation studies on thermocatalytic decomposition of methane by electroless nickel plating catalyst. Chemical Engineering Journal, 389, 124366-. https://dx.doi.org/10.1016/j.cej.2020.124366
Journal: Chemical Engineering Journal
Abstract: Hydrogen produced by thermocatalytic decomposition of methane is a promising approach to reduce the greenhouse gas effects on environment. A series of experiments were carried out to study the intrinsic kinetic reaction rate, reaction mechanism and catalyst deactivation in methane decomposition using electroless nickel plating on SBA-15 as the catalyst in a fixed bed reactor. The experiments were conducted under atmospheric pressure at a temperature range of 525–600 °C and different methane contact times based on varying methane flow rates over a catalyst bed of fixed weight and depth. The reaction order of kinetic reaction rate was found to be 2. The experimental value of the activation energy for the overall methane decomposition reaction was 113.993 kJ mol−1. A deactivation activity model was used and it showed good agreement with the experimental catalytic activities during the catalyst deactivation reaction for the range of experimental conditions. A deactivation order of 0.5 and an activation energy for the deactivation reaction of 147.870 kJ mol−1 were obtained. Transmission electron microscopy (TEM) was carried out to characterize the deactivated catalysts. TEM micrographs showed that the main deactivation mechanism using electroless nickel plating as catalyst was due to coking which resulted in a loss of active sites.
URI: https://hdl.handle.net/10356/162021
ISSN: 1385-8947
DOI: 10.1016/j.cej.2020.124366
Rights: © 2020 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

SCOPUSTM   
Citations 20

14
Updated on Nov 21, 2022

Web of ScienceTM
Citations 20

13
Updated on Nov 26, 2022

Page view(s)

5
Updated on Nov 26, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.