Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products

Glycerol (C3H8O3), a waste product of bio‐diesel, is considered as a suitable substrate for electro‐oxidation process to generate high value added products. In this work, palladium nanoparticles supported over activated MWCNTs with loadings of 5%‐40% were prepared using chemical reduction method and...

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Main Authors:	Ahmad, M. S., Cheng, C. K., Singh, Sharanjit, Kumar, Ravinder, AL-japairai, Khater Ahmed Saeed, Ong, Huei Ruey, Hamidah, Abdullah, Khan, Maksudur R.
Format:	Article
Language:	English
Published:	WILEY-VCH Verlag 2020
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/27582/ http://umpir.ump.edu.my/id/eprint/27582/ http://umpir.ump.edu.my/id/eprint/27582/ http://umpir.ump.edu.my/id/eprint/27582/1/pd-cnt1.pdf

id	ump-27582
recordtype	eprints
spelling	ump-275822020-01-28T04:47:16Z http://umpir.ump.edu.my/id/eprint/27582/ Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products Ahmad, M. S. Cheng, C. K. Singh, Sharanjit Kumar, Ravinder AL-japairai, Khater Ahmed Saeed Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R. TP Chemical technology Glycerol (C3H8O3), a waste product of bio‐diesel, is considered as a suitable substrate for electro‐oxidation process to generate high value added products. In this work, palladium nanoparticles supported over activated MWCNTs with loadings of 5%‐40% were prepared using chemical reduction method and further employed to explore their potential for electro‐oxidation of glycerol to produce various high‐value‐compounds. The catalysts were characterized by physiochemical methods, such as X‐ray diffraction (XRD), Brunauer‐Emmett‐Teller (BET), and Transmission electron microscopy, while the electro‐oxidation activity of the catalysts was analysed using cyclic voltammetry (CV) and chronoamperometry (CA), and the products were identified by high performance liquid chromatography (HPLC). The electrochemical surface area (SESA) and mass activity (MA) were increased from 176.98 m2 g‐1 to 282.29 m2 g‐1 and 12.22 mA/mg to 49.53 mA/mg by increasing the Pd‐loading from 5% to 20%, respectively. While the further increase to 40% Pd loading, the SESA and MA values decreased to 231.45 m2 g‐1 and 47.63 mA/mg respectively. The results found that the optimum 20% Pd‐loading showed the excellent electrochemical properties due to exceptional distribution of Pd‐metal particles over MWCNTs. HPLC analysis showed the tartronic acid, glyceric acid and glyceraldehyde as dominant products. Mechanism of the reaction has also been proposed based on product distribution. WILEY-VCH Verlag 2020 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/27582/1/pd-cnt1.pdf Ahmad, M. S. and Cheng, C. K. and Singh, Sharanjit and Kumar, Ravinder and AL-japairai, Khater Ahmed Saeed and Ong, Huei Ruey and Hamidah, Abdullah and Khan, Maksudur R. (2020) Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products. Electroanalysis. pp. 1-16. ISSN 1521-4109 (Submitted) https://doi.org/10.1002/elan.201900611 https://doi.org/10.1002/elan.201900611
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Ahmad, M. S. Cheng, C. K. Singh, Sharanjit Kumar, Ravinder AL-japairai, Khater Ahmed Saeed Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R. Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products
description	Glycerol (C3H8O3), a waste product of bio‐diesel, is considered as a suitable substrate for electro‐oxidation process to generate high value added products. In this work, palladium nanoparticles supported over activated MWCNTs with loadings of 5%‐40% were prepared using chemical reduction method and further employed to explore their potential for electro‐oxidation of glycerol to produce various high‐value‐compounds. The catalysts were characterized by physiochemical methods, such as X‐ray diffraction (XRD), Brunauer‐Emmett‐Teller (BET), and Transmission electron microscopy, while the electro‐oxidation activity of the catalysts was analysed using cyclic voltammetry (CV) and chronoamperometry (CA), and the products were identified by high performance liquid chromatography (HPLC). The electrochemical surface area (SESA) and mass activity (MA) were increased from 176.98 m2 g‐1 to 282.29 m2 g‐1 and 12.22 mA/mg to 49.53 mA/mg by increasing the Pd‐loading from 5% to 20%, respectively. While the further increase to 40% Pd loading, the SESA and MA values decreased to 231.45 m2 g‐1 and 47.63 mA/mg respectively. The results found that the optimum 20% Pd‐loading showed the excellent electrochemical properties due to exceptional distribution of Pd‐metal particles over MWCNTs. HPLC analysis showed the tartronic acid, glyceric acid and glyceraldehyde as dominant products. Mechanism of the reaction has also been proposed based on product distribution.
format	Article
author	Ahmad, M. S. Cheng, C. K. Singh, Sharanjit Kumar, Ravinder AL-japairai, Khater Ahmed Saeed Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R.
author_facet	Ahmad, M. S. Cheng, C. K. Singh, Sharanjit Kumar, Ravinder AL-japairai, Khater Ahmed Saeed Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R.
author_sort	Ahmad, M. S.
title	Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products
title_short	Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products
title_full	Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products
title_fullStr	Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products
title_full_unstemmed	Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products
title_sort	pd/cnt catalysts for glycerol electro‐oxidation: effect of pd loading on production of valuable chemical products
publisher	WILEY-VCH Verlag
publishDate	2020
url	http://umpir.ump.edu.my/id/eprint/27582/ http://umpir.ump.edu.my/id/eprint/27582/ http://umpir.ump.edu.my/id/eprint/27582/ http://umpir.ump.edu.my/id/eprint/27582/1/pd-cnt1.pdf
first_indexed	2023-09-18T22:43:21Z
last_indexed	2023-09-18T22:43:21Z
_version_	1777417061865095168

Pd/CNT catalysts for glycerol electro‐oxidation: Effect of Pd loading on production of valuable chemical products

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