Cover Image

Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol

The concern on the depleting problem of petroleum diesel has encouraged many attempts to alternatively replace it with biodiesel fuel. Unfortunately, the enormous increase in the biodiesel production has mainly caused the surplus of glycerol production. Researches on utilizing and upgrading glycerol...

Full description

Saved in:
Bibliographic Details
Main Author: Anuar, Mohd.Razealy
Format: Thesis
Language:English
Published: 2013
Subjects:
TP1-1185 Chemical technology
Online Access:http://eprints.usm.my/43404/1/Mohd.Razealy%20Anuar24.pdf
http://eprints.usm.my/43404/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.usm.eprints.43404
record_format eprints
spelling my.usm.eprints.43404 http://eprints.usm.my/43404/ Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol Anuar, Mohd.Razealy TP1-1185 Chemical technology The concern on the depleting problem of petroleum diesel has encouraged many attempts to alternatively replace it with biodiesel fuel. Unfortunately, the enormous increase in the biodiesel production has mainly caused the surplus of glycerol production. Researches on utilizing and upgrading glycerol to value-added products should be promoted to stabilize the global market of glycerol. In the present study, glycerol was upgraded to diglycerol through a basic-catalyzed etherification reaction. The reaction was carried out in the presence of hydrotalcite as catalyst. Hydrotalcite was prepared using a combustion method. The hydrotalcite synthesis was studied by focusing on different experimental variables i.e. types of fuel used, calcinations temperatures, multi-anion source and amount of CO32- anion. For the etherification process, the catalytic activity of hydrotalcite was performed at the reaction temperatures between 200oC to 240oC in 16 h. The reaction kinetics was studied by varying the reaction temperature from 200oC to 260oC. The textural and chemical characteristics of the hydrotalcite were elucidated by means of X-ray diffraction for crystallinity, surface analysis for surface characteristics, Hammett indicator for basicity and basic strength, SEM for surface morphology and EDX for chemical composition. Glucose, fructose and saccharose were used as fuel and the calcination temperature were 450oC to 850oC. Glucose was identified as the most favourable fuel where the resulting catalyst was the most active with a conversion of 12.34 % and diglycerol selectivity of 97.73 % in 8 h. 2013-01 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/43404/1/Mohd.Razealy%20Anuar24.pdf Anuar, Mohd.Razealy (2013) Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol. Masters thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic TP1-1185 Chemical technology
spellingShingle TP1-1185 Chemical technology
Anuar, Mohd.Razealy
Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol
description The concern on the depleting problem of petroleum diesel has encouraged many attempts to alternatively replace it with biodiesel fuel. Unfortunately, the enormous increase in the biodiesel production has mainly caused the surplus of glycerol production. Researches on utilizing and upgrading glycerol to value-added products should be promoted to stabilize the global market of glycerol. In the present study, glycerol was upgraded to diglycerol through a basic-catalyzed etherification reaction. The reaction was carried out in the presence of hydrotalcite as catalyst. Hydrotalcite was prepared using a combustion method. The hydrotalcite synthesis was studied by focusing on different experimental variables i.e. types of fuel used, calcinations temperatures, multi-anion source and amount of CO32- anion. For the etherification process, the catalytic activity of hydrotalcite was performed at the reaction temperatures between 200oC to 240oC in 16 h. The reaction kinetics was studied by varying the reaction temperature from 200oC to 260oC. The textural and chemical characteristics of the hydrotalcite were elucidated by means of X-ray diffraction for crystallinity, surface analysis for surface characteristics, Hammett indicator for basicity and basic strength, SEM for surface morphology and EDX for chemical composition. Glucose, fructose and saccharose were used as fuel and the calcination temperature were 450oC to 850oC. Glucose was identified as the most favourable fuel where the resulting catalyst was the most active with a conversion of 12.34 % and diglycerol selectivity of 97.73 % in 8 h.
format Thesis
author Anuar, Mohd.Razealy
author_facet Anuar, Mohd.Razealy
author_sort Anuar, Mohd.Razealy
title Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol
title_short Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol
title_full Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol
title_fullStr Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol
title_full_unstemmed Hydrotalcite Catalysts Prepared Using Combustion Method For Selective Etherification Of Glycerol To Diglycerol
title_sort hydrotalcite catalysts prepared using combustion method for selective etherification of glycerol to diglycerol
publishDate 2013
url http://eprints.usm.my/43404/1/Mohd.Razealy%20Anuar24.pdf
http://eprints.usm.my/43404/
_version_ 1643710734407827456
score 13.211869

Similar Items