Hashemnezhad, Sayed Emad, Onwudili, Jude A., Thornley, Patricia and Simons, Keith E. (2024). Kinetics of hydrothermal reactions of n-butanol over Pt/Al2O3 catalyst for biopropane fuel gas production. Chemical Engineering Journal, 501 ,
Abstract
Energy defossilisation using drop-in biofuels is an important step towards Net Zero. Producing low-carbon clean-burning propane fuel from biomass provides such additional sustainability benefits. In this work, kinetics of hydrothermal reactions of n-butanol, a biomass-derived feedstock, to produce propane over 5 wt% Pt/Al2O3 catalyst have been studied from 523- 573 K. Experimental data revealed negligible internal and external mass transfer effects and, when fitted to an integral power-rate law equation, gave activation energy of 70 kJ mol−1 (n-butanol reaction order = 1). Furthermore, an appropriate Langmuir-Hinshelwood model was developed, which predicted similar activation energy 62 kJ mol−1. Low adsorption enthalpies for n-butanol (–33.51 kJ mol−1) and water (−18.16 kJ mol−1) indicated weak interactions on the catalyst surface. These agreed with the fast reaction rate of ≈1.0 x 10-5 mol gcat-1 s−1 obtained at ≥ 548 K. As a new research area, generation of such accurate kinetics data will contribute to process development for large-scale biopropane production.
Publication DOI: | https://doi.org/10.1016/j.cej.2024.157325 |
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Divisions: | College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry College of Engineering & Physical Sciences College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI) Aston University (General) |
Additional Information: | Copyright © The Author(s). Published by Elsevier B.V. This is an open access article distributed under the terms of the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. You are not required to obtain permission to reuse this article. |
Uncontrolled Keywords: | Biobutanol,Biomass,Biopropane,Catalytic hydrothermal reaction,Defossilisation,Reaction kinetics,General Chemistry,Environmental Chemistry,General Chemical Engineering,Industrial and Manufacturing Engineering |
Publication ISSN: | 1873-3212 |
Last Modified: | 19 Dec 2024 08:23 |
Date Deposited: | 14 Nov 2024 10:38 |
Full Text Link: | |
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(Publisher URL) http://www.scop ... tnerID=8YFLogxK (Scopus URL) |
PURE Output Type: | Article |
Published Date: | 2024-12-01 |
Published Online Date: | 2024-11-13 |
Accepted Date: | 2024-10-31 |
Authors: |
Hashemnezhad, Sayed Emad
Onwudili, Jude A. ( 0000-0002-5355-9970) Thornley, Patricia ( 0000-0003-0783-2179) Simons, Keith E. |