Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution

In this work, glycerol valorization into tartronic acid – one of the most valuable derivatives of glycerol – was reported over platinum supported on multi-walled carbon nanotubes (Pt/CNT) electrocatalyst. The nanocatalyst was synthesized using a chemical reduction method with hydrazine as a reducing...

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Main Authors:	Ahmad, M. S., Cheng, C. K., Ong, Huei Ruey, Hamidah, Abdullah, Hong, Chi Shein, Chua, Gek Kee, Mishra, Puranjan, Khan, Maksudur R.
Format:	Article
Language:	English
Published:	Taylor & Francis 2019
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/27577/ http://umpir.ump.edu.my/id/eprint/27577/ http://umpir.ump.edu.my/id/eprint/27577/1/Electro-oxidation%20of%20waste%20glycerol%20to%20tartronic%20acid1.pdf

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recordtype	eprints
spelling	ump-275772020-01-29T01:28:42Z http://umpir.ump.edu.my/id/eprint/27577/ Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution Ahmad, M. S. Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Hong, Chi Shein Chua, Gek Kee Mishra, Puranjan Khan, Maksudur R. TP Chemical technology In this work, glycerol valorization into tartronic acid – one of the most valuable derivatives of glycerol – was reported over platinum supported on multi-walled carbon nanotubes (Pt/CNT) electrocatalyst. The nanocatalyst was synthesized using a chemical reduction method with hydrazine as a reducing agent. The physical analyses of catalyst were performed by BET, XRD, FESEM, EDX, and TEM. The XRD spectroscopy indicated a face-centered cubic crystalline structure with an average crystallite size of 4.2 nm. The field emission scanning electron microscopy analysis revealed that the particles were uniformly distributed over multi-walled carbon nanotubes, while EDX showed the elemental composition of Pt (17.52%) and C (82.48%). Electrochemical activity and stability of the catalyst were measured using cyclic voltammetry and chronoamperometry techniques. Electrochemical surface area (ECSA, 226.52 m2/g) and mass activity (MA, 5.74 mA/mg) were calculated in 0.5 M H2SO4 and 0.5 M glycerol/0.5 M KOH solution, respectively. The catalytic activity of Pt/CNT nanoparticles was analyzed from glycerol oxidation reaction (GOR), while the products distribution and selectivity were measured using high-performance liquid chromatography (HPLC). It was found that the tartronic acid was produced as a major product with a selectivity of 95.3% while small quantities (<1%) of mesoxalic acid, dihydroxyacetone, and glyceric acid were also produced. The higher activity and selectivity of Pt/CNT can be attributed to high electrochemical surface area and uniform distribution over support. Taylor & Francis 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/27577/1/Electro-oxidation%20of%20waste%20glycerol%20to%20tartronic%20acid1.pdf Ahmad, M. S. and Cheng, C. K. and Ong, Huei Ruey and Hamidah, Abdullah and Hong, Chi Shein and Chua, Gek Kee and Mishra, Puranjan and Khan, Maksudur R. (2019) Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. pp. 1-18. ISSN 1556-7036 (Print); 1556-7230 (Online) (In Press) https://doi.org/10.1080/15567036.2019.1683099
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. Ong, Huei Ruey Hamidah, Abdullah Hong, Chi Shein Chua, Gek Kee Mishra, Puranjan Khan, Maksudur R. Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution
description	In this work, glycerol valorization into tartronic acid – one of the most valuable derivatives of glycerol – was reported over platinum supported on multi-walled carbon nanotubes (Pt/CNT) electrocatalyst. The nanocatalyst was synthesized using a chemical reduction method with hydrazine as a reducing agent. The physical analyses of catalyst were performed by BET, XRD, FESEM, EDX, and TEM. The XRD spectroscopy indicated a face-centered cubic crystalline structure with an average crystallite size of 4.2 nm. The field emission scanning electron microscopy analysis revealed that the particles were uniformly distributed over multi-walled carbon nanotubes, while EDX showed the elemental composition of Pt (17.52%) and C (82.48%). Electrochemical activity and stability of the catalyst were measured using cyclic voltammetry and chronoamperometry techniques. Electrochemical surface area (ECSA, 226.52 m2/g) and mass activity (MA, 5.74 mA/mg) were calculated in 0.5 M H2SO4 and 0.5 M glycerol/0.5 M KOH solution, respectively. The catalytic activity of Pt/CNT nanoparticles was analyzed from glycerol oxidation reaction (GOR), while the products distribution and selectivity were measured using high-performance liquid chromatography (HPLC). It was found that the tartronic acid was produced as a major product with a selectivity of 95.3% while small quantities (<1%) of mesoxalic acid, dihydroxyacetone, and glyceric acid were also produced. The higher activity and selectivity of Pt/CNT can be attributed to high electrochemical surface area and uniform distribution over support.
format	Article
author	Ahmad, M. S. Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Hong, Chi Shein Chua, Gek Kee Mishra, Puranjan Khan, Maksudur R.
author_facet	Ahmad, M. S. Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Hong, Chi Shein Chua, Gek Kee Mishra, Puranjan Khan, Maksudur R.
author_sort	Ahmad, M. S.
title	Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution
title_short	Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution
title_full	Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution
title_fullStr	Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution
title_full_unstemmed	Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution
title_sort	electro-oxidation of waste glycerol to tartronic acid over pt/cnt nanocatalyst: study of effect of reaction time on product distribution
publisher	Taylor & Francis
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/27577/ http://umpir.ump.edu.my/id/eprint/27577/ http://umpir.ump.edu.my/id/eprint/27577/1/Electro-oxidation%20of%20waste%20glycerol%20to%20tartronic%20acid1.pdf
first_indexed	2023-09-18T22:43:21Z
last_indexed	2023-09-18T22:43:21Z
_version_	1777417061440421888

Electro-oxidation of waste glycerol to tartronic acid over Pt/CNT nanocatalyst: study of effect of reaction time on product distribution

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