Staff View: Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production

Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production

A series of novel mixed metal oxide catalysts with the incorporation of copper as a dopant supported on zinc-alumina (Cu/Zn/γ-Al2O3) for biodiesel production have been synthesized and characterized. ZnO is a solid base catalyst, but its weak surface basic properties have limited the usage of ZnO in...

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Main Authors:	Sulaiman, N. F., Lee, S. L., Toemen, S., Bakar, W. A. W. A.
Format:	Article
Published:	Elsevier Ltd. 2020
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/86604/ https://dx.doi.org/10.1016/j.renene.2020.04.021
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id	my.utm.86604
record_format	eprints
spelling	my.utm.866042020-09-30T08:44:01Z http://eprints.utm.my/id/eprint/86604/ Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production Sulaiman, N. F. Lee, S. L. Toemen, S. Bakar, W. A. W. A. QD Chemistry A series of novel mixed metal oxide catalysts with the incorporation of copper as a dopant supported on zinc-alumina (Cu/Zn/γ-Al2O3) for biodiesel production have been synthesized and characterized. ZnO is a solid base catalyst, but its weak surface basic properties have limited the usage of ZnO in the transesterification reaction of refined used cooking oil to biodiesel. To further improve the catalytic activity, the copper dopant was loaded by the wetness impregnation method. Cu/Zn/γ-Al2O3 catalyst of 10:90 wt% dopant-to-based (ZnO) ratio with calcination at 800 °C exhibited the highest biodiesel yield (89.5%) at optimum reaction conditions (65 °C, 10 wt% catalyst loading, 1:20 oil-to-methanol mol ratio and 2 h reaction time). The N2 adsorption-desorption and CO2-temperature programmed desorption analyses indicated that the material possessed a high surface area (149 m2/g) and high basicity (3.7424 mmol/g). The mechanistic study confirmed the catalytic reaction followed the Langmuir-Hinshelwood (LH) model, which involves the initial adsorption of reactants molecules on active sites of the catalyst surface. Elsevier Ltd. 2020-08 Article PeerReviewed Sulaiman, N. F. and Lee, S. L. and Toemen, S. and Bakar, W. A. W. A. (2020) Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production. Renewable Energy, 156 . pp. 142-157. ISSN 0960-1481 https://dx.doi.org/10.1016/j.renene.2020.04.021 DOI:10.1016/j.renene.2020.04.021
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Sulaiman, N. F. Lee, S. L. Toemen, S. Bakar, W. A. W. A. Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
description	A series of novel mixed metal oxide catalysts with the incorporation of copper as a dopant supported on zinc-alumina (Cu/Zn/γ-Al2O3) for biodiesel production have been synthesized and characterized. ZnO is a solid base catalyst, but its weak surface basic properties have limited the usage of ZnO in the transesterification reaction of refined used cooking oil to biodiesel. To further improve the catalytic activity, the copper dopant was loaded by the wetness impregnation method. Cu/Zn/γ-Al2O3 catalyst of 10:90 wt% dopant-to-based (ZnO) ratio with calcination at 800 °C exhibited the highest biodiesel yield (89.5%) at optimum reaction conditions (65 °C, 10 wt% catalyst loading, 1:20 oil-to-methanol mol ratio and 2 h reaction time). The N2 adsorption-desorption and CO2-temperature programmed desorption analyses indicated that the material possessed a high surface area (149 m2/g) and high basicity (3.7424 mmol/g). The mechanistic study confirmed the catalytic reaction followed the Langmuir-Hinshelwood (LH) model, which involves the initial adsorption of reactants molecules on active sites of the catalyst surface.
format	Article
author	Sulaiman, N. F. Lee, S. L. Toemen, S. Bakar, W. A. W. A.
author_facet	Sulaiman, N. F. Lee, S. L. Toemen, S. Bakar, W. A. W. A.
author_sort	Sulaiman, N. F.
title	Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
title_short	Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
title_full	Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
title_fullStr	Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
title_full_unstemmed	Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
title_sort	physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production
publisher	Elsevier Ltd.
publishDate	2020
url	http://eprints.utm.my/id/eprint/86604/ https://dx.doi.org/10.1016/j.renene.2020.04.021
_version_	1680321070180073472
score	13.211869

Physicochemical characteristics of cu/zn/g-al2o3 catalyst and its mechanistic study in transesterification for biodiesel production

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