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Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c

The present work investigated the biodiesel production from used cooking oil catalyzed by nano-bifunctional supermagnetic heterogeneous catalysts (RHC/K2O/Fe) derived from rice husk doped with K2O and Fe synthesized by the wet impregnation method. The synthesized catalysts (RHC/K2O/Fe) were characte...

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Main Authors: Balkis Hazmi, Umer Rashid, Yap, Taufiq Yun Hin, Mohd Lokman Ibrahim, Nehdi Imededdine
Format: Article
Language:English
Published: 2020
Subjects:
TP Chemical technology
Online Access:https://eprints.ums.edu.my/id/eprint/25513/1/Supermagnetic%20nano-bifunctional%20catalyst%20from%20rice%20husk.pdf
https://eprints.ums.edu.my/id/eprint/25513/
https://doi.org/10.3390/catal10020225
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spelling my.ums.eprints.255132021-02-24T12:16:46Z https://eprints.ums.edu.my/id/eprint/25513/ Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c Balkis Hazmi Umer Rashid Yap, Taufiq Yun Hin Mohd Lokman Ibrahim Nehdi Imededdine TP Chemical technology The present work investigated the biodiesel production from used cooking oil catalyzed by nano-bifunctional supermagnetic heterogeneous catalysts (RHC/K2O/Fe) derived from rice husk doped with K2O and Fe synthesized by the wet impregnation method. The synthesized catalysts (RHC/K2O/Fe) were characterized for crystallinity by X-ray diffraction spectroscopy (XRD), total acidity and basicity using CO2/NH3-TPD, textural properties through Brunauer-Emmett-Teller (BET), thermal stability via thermogravimetric analyzer (TGA), functional group determination by Fourier-transform infrared spectroscopy (FTIR), surface morphology through field emission scanning electron microscopy (FESEM), and magnetic properties by vibrating sample magnetometer (VSM). The VSM result demonstrated that the super-paramagnetic catalyst (RHC/K2O-20%/Fe-5%) could be simply separated and regained after the reaction using an external magnetic field. The operating conditions such as catalyst loading, methanol/oil molar ratio, temperature, and reaction duration were studied. The screened RHC/K2O-20%/Fe-5% catalyst was selected for further optimization and the optimum reaction parameters found were 4 wt % of catalyst, a molar ratio of methanol/oil of 12:1, 4 h reaction duration, and 75 °C reaction temperature with a maximal yield of 98.6%. The reusability study and reactivation results revealed that the nano-bifunctional magnetic catalyst (RHC/K2O-20%/Fe-5%) could be preserved by high catalytic activity even after being reused five times. 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/25513/1/Supermagnetic%20nano-bifunctional%20catalyst%20from%20rice%20husk.pdf Balkis Hazmi and Umer Rashid and Yap, Taufiq Yun Hin and Mohd Lokman Ibrahim and Nehdi Imededdine (2020) Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c. Catalysts, 10 (2). p. 225. https://doi.org/10.3390/catal10020225
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Balkis Hazmi
Umer Rashid
Yap, Taufiq Yun Hin
Mohd Lokman Ibrahim
Nehdi Imededdine
Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c
description The present work investigated the biodiesel production from used cooking oil catalyzed by nano-bifunctional supermagnetic heterogeneous catalysts (RHC/K2O/Fe) derived from rice husk doped with K2O and Fe synthesized by the wet impregnation method. The synthesized catalysts (RHC/K2O/Fe) were characterized for crystallinity by X-ray diffraction spectroscopy (XRD), total acidity and basicity using CO2/NH3-TPD, textural properties through Brunauer-Emmett-Teller (BET), thermal stability via thermogravimetric analyzer (TGA), functional group determination by Fourier-transform infrared spectroscopy (FTIR), surface morphology through field emission scanning electron microscopy (FESEM), and magnetic properties by vibrating sample magnetometer (VSM). The VSM result demonstrated that the super-paramagnetic catalyst (RHC/K2O-20%/Fe-5%) could be simply separated and regained after the reaction using an external magnetic field. The operating conditions such as catalyst loading, methanol/oil molar ratio, temperature, and reaction duration were studied. The screened RHC/K2O-20%/Fe-5% catalyst was selected for further optimization and the optimum reaction parameters found were 4 wt % of catalyst, a molar ratio of methanol/oil of 12:1, 4 h reaction duration, and 75 °C reaction temperature with a maximal yield of 98.6%. The reusability study and reactivation results revealed that the nano-bifunctional magnetic catalyst (RHC/K2O-20%/Fe-5%) could be preserved by high catalytic activity even after being reused five times.
format Article
author Balkis Hazmi
Umer Rashid
Yap, Taufiq Yun Hin
Mohd Lokman Ibrahim
Nehdi Imededdine
author_facet Balkis Hazmi
Umer Rashid
Yap, Taufiq Yun Hin
Mohd Lokman Ibrahim
Nehdi Imededdine
author_sort Balkis Hazmi
title Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c
title_short Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c
title_full Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c
title_fullStr Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c
title_full_unstemmed Supermagnetic nano-bifunctional catalyst from rice husk: Synthesis, characterization and application for conversion of used cooking oil to c
title_sort supermagnetic nano-bifunctional catalyst from rice husk: synthesis, characterization and application for conversion of used cooking oil to c
publishDate 2020
url https://eprints.ums.edu.my/id/eprint/25513/1/Supermagnetic%20nano-bifunctional%20catalyst%20from%20rice%20husk.pdf
https://eprints.ums.edu.my/id/eprint/25513/
https://doi.org/10.3390/catal10020225
_version_ 1760230378047537152
score 13.211869

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