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Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil

The present work demonstrated the preparation of sodium oxide impregnated on carbon nanotubes (CNTs) and its application as a heterogeneous catalyst for transesterification of waste cooking oil. The catalyst was prepared by impregnation of metal oxide such as sodium oxide, Na2O on the CNTs by calcin...

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Main Authors: Ibrahim, Mohd Lokman, Nik Abdul Khalil, Nik Nur Adlina, Islam, Aminul, Rashid, Umer, Ibrahim, Siti Fadhilah, Sinar Mashuri, Salma Izati, Yun Hin, Taufiq Yap
Format: Article
Language:English
Published: Elsevier 2020
Online Access:http://psasir.upm.edu.my/id/eprint/86670/1/Preparation%20of%20Na2O%20supported%20CNTs.pdf
http://psasir.upm.edu.my/id/eprint/86670/
https://www.sciencedirect.com/science/article/abs/pii/S0196890419314530
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spelling my.upm.eprints.866702022-01-24T11:37:04Z http://psasir.upm.edu.my/id/eprint/86670/ Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil Ibrahim, Mohd Lokman Nik Abdul Khalil, Nik Nur Adlina Islam, Aminul Rashid, Umer Ibrahim, Siti Fadhilah Sinar Mashuri, Salma Izati Yun Hin, Taufiq Yap The present work demonstrated the preparation of sodium oxide impregnated on carbon nanotubes (CNTs) and its application as a heterogeneous catalyst for transesterification of waste cooking oil. The catalyst was prepared by impregnation of metal oxide such as sodium oxide, Na2O on the CNTs by calcination at 500 °C for 3 h. It was assumed that the positive metal ion which is Na+ (cations) possess Lewis acidity, whereby, high negativity of oxygen ions can acts as the Brønsted bases, which could enhance the activity of the catalyst. The characterization of synthesized Na2O impregnated-CNTs nanocatalyst was performed using Temperature-programmed desorption of carbon dioxide (TPD-CO2), X-ray diffraction (XRD), infrared spectroscopy and Field emission scanning electron microscope (FESEM). Herein, the mechanism of the transesterification process assisted by the Lewis acidic metal oxide on carbon support was proposed and explained. Series of reactions were carried out to determine the performance of the catalyst. It was found that the prepared Na2O(20 wt%)/CNTs catalysts yielded above 97% of FAME yield at 65 °C assisted by 3 wt% of catalyst amount and 20:1 of methanol-to-oil molar ratio in 3 h of reaction time. Moreover, the results on catalyst’s reusability indicated that the catalyst could last for 3 subsequent reaction cycles due to deactivation of the catalyst caused by leaching of metal oxides and poisioning effect on the active sites. It can be concluded that the prepared Lewis acidic carbon catalyst has a potential to catalyse the production of biodiesel from waste cooking oil (WCO). Elsevier 2020-02-01 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/86670/1/Preparation%20of%20Na2O%20supported%20CNTs.pdf Ibrahim, Mohd Lokman and Nik Abdul Khalil, Nik Nur Adlina and Islam, Aminul and Rashid, Umer and Ibrahim, Siti Fadhilah and Sinar Mashuri, Salma Izati and Yun Hin, Taufiq Yap (2020) Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil. Energy Conversion and Management, 205. art. no. 112445. pp. 1-8. ISSN 0196-8904, ESSN: 1879-2227 https://www.sciencedirect.com/science/article/abs/pii/S0196890419314530 10.1016/j.enconman.2019.112445
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The present work demonstrated the preparation of sodium oxide impregnated on carbon nanotubes (CNTs) and its application as a heterogeneous catalyst for transesterification of waste cooking oil. The catalyst was prepared by impregnation of metal oxide such as sodium oxide, Na2O on the CNTs by calcination at 500 °C for 3 h. It was assumed that the positive metal ion which is Na+ (cations) possess Lewis acidity, whereby, high negativity of oxygen ions can acts as the Brønsted bases, which could enhance the activity of the catalyst. The characterization of synthesized Na2O impregnated-CNTs nanocatalyst was performed using Temperature-programmed desorption of carbon dioxide (TPD-CO2), X-ray diffraction (XRD), infrared spectroscopy and Field emission scanning electron microscope (FESEM). Herein, the mechanism of the transesterification process assisted by the Lewis acidic metal oxide on carbon support was proposed and explained. Series of reactions were carried out to determine the performance of the catalyst. It was found that the prepared Na2O(20 wt%)/CNTs catalysts yielded above 97% of FAME yield at 65 °C assisted by 3 wt% of catalyst amount and 20:1 of methanol-to-oil molar ratio in 3 h of reaction time. Moreover, the results on catalyst’s reusability indicated that the catalyst could last for 3 subsequent reaction cycles due to deactivation of the catalyst caused by leaching of metal oxides and poisioning effect on the active sites. It can be concluded that the prepared Lewis acidic carbon catalyst has a potential to catalyse the production of biodiesel from waste cooking oil (WCO).
format Article
author Ibrahim, Mohd Lokman
Nik Abdul Khalil, Nik Nur Adlina
Islam, Aminul
Rashid, Umer
Ibrahim, Siti Fadhilah
Sinar Mashuri, Salma Izati
Yun Hin, Taufiq Yap
spellingShingle Ibrahim, Mohd Lokman
Nik Abdul Khalil, Nik Nur Adlina
Islam, Aminul
Rashid, Umer
Ibrahim, Siti Fadhilah
Sinar Mashuri, Salma Izati
Yun Hin, Taufiq Yap
Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil
author_facet Ibrahim, Mohd Lokman
Nik Abdul Khalil, Nik Nur Adlina
Islam, Aminul
Rashid, Umer
Ibrahim, Siti Fadhilah
Sinar Mashuri, Salma Izati
Yun Hin, Taufiq Yap
author_sort Ibrahim, Mohd Lokman
title Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil
title_short Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil
title_full Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil
title_fullStr Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil
title_full_unstemmed Preparation of Na2O supported CNTs nanocatalyst for efficient biodiesel production from waste-oil
title_sort preparation of na2o supported cnts nanocatalyst for efficient biodiesel production from waste-oil
publisher Elsevier
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/86670/1/Preparation%20of%20Na2O%20supported%20CNTs.pdf
http://psasir.upm.edu.my/id/eprint/86670/
https://www.sciencedirect.com/science/article/abs/pii/S0196890419314530
_version_ 1724075470884962304
score 13.211869

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