Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane

The production of syngas (hydrogen, H2 and carbon monoxide, CO) through carbon dioxide reforming of methane (CRM) is a promising process that simultaneously utilizes two greenhouse gases, i.e., methane, CH4 and carbon dioxide, CO2. Currently, the use of biogas as a cheap feedstock for CRM is very...

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Main Author:	Wong, Yee Jie
Format:	Thesis
Language:	English
Published:	2016
Subjects:	T Technology TP155-156 Chemical engineering
Online Access:	http://eprints.usm.my/45698/1/Synthesis%20And%20Characterization%20Of%20Coal2o4%20And%20Co-Al2O3-Coal2o4%20Catalysts%20Activity%20In%20Carbon%20Dioxide%20Reforming%20Of%20Methane.pdf
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spelling	my-usm-ep.456982021-11-17T03:42:17Z Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane 2016-10 Wong, Yee Jie T Technology TP155-156 Chemical engineering The production of syngas (hydrogen, H2 and carbon monoxide, CO) through carbon dioxide reforming of methane (CRM) is a promising process that simultaneously utilizes two greenhouse gases, i.e., methane, CH4 and carbon dioxide, CO2. Currently, the use of biogas as a cheap feedstock for CRM is very alluring due to the its nearly 1:1 ratio of CH4 and CO2 content, which is ideal for this reaction. However, a catalyst made of earth-abundant elements and highly active in CRM is still in demand thus was made a subject of investigation in this project. In this study, the activity of Co(x)Al(3-x)O4 and Co-Al2O3-CoAl2O4 catalysts were investigated. The amount of cobalt, Co content in the catalyst were altered and denoted as x%-Co, where x range from 11.11% to 42.83%. Co(x)Al(3-x)O4 were prepared by sol-gel method at different Co and Al loading while Co-Al2O3-CoAl2O4 were prepared by reducing the freshly synthesized x%-Co compound with H2. 33.33%-Co was the best performing catalyst which produced 90.37% and 96.02% yield for H2 and CO, respectively at 900 °C, weight hourly space velocity (WHSV) of 15000 mlg-1h-1 and CH4 to CO2 feed ratio of 1:1. There was no observable catalytic activity decay within 24 h of reaction time and the rate of carbon deposition was at 3.1×10-2 g·gcat -1 ·h-1. Reduced 33.33%-Co was able to produces CH4 and CO2 conversion of 72.89 % and 79.49 %, respectively at 750 °C with a carbon formation rate of 1.7×10-2 g·gcat -1h-1. Study on the effect of Co content on reduced x%-Co in CRM reaction revealed that 15.79%-Co was able to achieve a constant conversion of 67.39 % and 78.54 % for CH4 and CO2, respectively at the reaction temperature of 750 °C, WHSV of 30000 mlg-1h-1 and CH4 to CO2 feed ratio of 1:1 for 50 h with rate of carbon deposition at 4.26×10-4 g·gcat -1·h-1. 2016-10 Thesis http://eprints.usm.my/45698/ http://eprints.usm.my/45698/1/Synthesis%20And%20Characterization%20Of%20Coal2o4%20And%20Co-Al2O3-Coal2o4%20Catalysts%20Activity%20In%20Carbon%20Dioxide%20Reforming%20Of%20Methane.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Kimia
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology TP155-156 Chemical engineering
spellingShingle	T Technology TP155-156 Chemical engineering Wong, Yee Jie Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane
description	The production of syngas (hydrogen, H2 and carbon monoxide, CO) through carbon dioxide reforming of methane (CRM) is a promising process that simultaneously utilizes two greenhouse gases, i.e., methane, CH4 and carbon dioxide, CO2. Currently, the use of biogas as a cheap feedstock for CRM is very alluring due to the its nearly 1:1 ratio of CH4 and CO2 content, which is ideal for this reaction. However, a catalyst made of earth-abundant elements and highly active in CRM is still in demand thus was made a subject of investigation in this project. In this study, the activity of Co(x)Al(3-x)O4 and Co-Al2O3-CoAl2O4 catalysts were investigated. The amount of cobalt, Co content in the catalyst were altered and denoted as x%-Co, where x range from 11.11% to 42.83%. Co(x)Al(3-x)O4 were prepared by sol-gel method at different Co and Al loading while Co-Al2O3-CoAl2O4 were prepared by reducing the freshly synthesized x%-Co compound with H2. 33.33%-Co was the best performing catalyst which produced 90.37% and 96.02% yield for H2 and CO, respectively at 900 °C, weight hourly space velocity (WHSV) of 15000 mlg-1h-1 and CH4 to CO2 feed ratio of 1:1. There was no observable catalytic activity decay within 24 h of reaction time and the rate of carbon deposition was at 3.1×10-2 g·gcat -1 ·h-1. Reduced 33.33%-Co was able to produces CH4 and CO2 conversion of 72.89 % and 79.49 %, respectively at 750 °C with a carbon formation rate of 1.7×10-2 g·gcat -1h-1. Study on the effect of Co content on reduced x%-Co in CRM reaction revealed that 15.79%-Co was able to achieve a constant conversion of 67.39 % and 78.54 % for CH4 and CO2, respectively at the reaction temperature of 750 °C, WHSV of 30000 mlg-1h-1 and CH4 to CO2 feed ratio of 1:1 for 50 h with rate of carbon deposition at 4.26×10-4 g·gcat -1·h-1.
format	Thesis
qualification_level	Master's degree
author	Wong, Yee Jie
author_facet	Wong, Yee Jie
author_sort	Wong, Yee Jie
title	Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane
title_short	Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane
title_full	Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane
title_fullStr	Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane
title_full_unstemmed	Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane
title_sort	synthesis and characterization of coal2o4 and co-al2o3-coal2o4 catalysts activity in carbon dioxide reforming of methane
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Kimia
publishDate	2016
url	http://eprints.usm.my/45698/1/Synthesis%20And%20Characterization%20Of%20Coal2o4%20And%20Co-Al2O3-Coal2o4%20Catalysts%20Activity%20In%20Carbon%20Dioxide%20Reforming%20Of%20Methane.pdf
_version_	1747821548486524928

Synthesis And Characterization Of Coal2o4 And Co-Al2O3-Coal2o4 Catalysts Activity In Carbon Dioxide Reforming Of Methane

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