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Santipab Ampansang.. Direct conversion of Methane over alumina supported cobalt modified by alkaline earth catalysts. Master's Degree(Chemical Engineering). Kasetsart University. Office of the University Library. : Kasetsart University, 2022.
Direct conversion of Methane over alumina supported cobalt modified by alkaline earth catalysts
Name: Santipab Ampansang.
Classification :.LCCS: TP359.M4
LCSH:
Methane.
LCSH:
Catalysts.
LCSH:
Cobalt catalysts.
LCSH:
Metal catalysts.
LCSH:
Alkaline earth metals.
Abstract:
Methane can be directly converted to valuable hydrocarbons (such as C2H4 and C2H6) via oxidative coupling of methane (OCM). The current work intensively investigated 20 weight percentage (20 wt%) of cobalt supported on gamma-alumina (20Co/Al2O3) modified with alkaline earth metals (Mg, Ca, Sr, and Ba), prepared using the wet impregnation method. A variety of techniques were used to characterize the prepared catalysts: XRD, CO2-TPD, BET, TEM, STEM, XPS, and TGA. The catalysts were tested in a fixed-bed reactor at atmospheric pressure. Notably, the 20Co/Al2O3 catalysts modified with Ca and Sr were highly active at low temperatures (460610 °C). The most active catalyst was 20Co/Al2O3 loaded with 2.5 wt% Sr, achieving the highest C2+ yield of 3.0%, with 10.6% C2+ selectivity and 27.8% CH4 conversion at 580 °C. In addition, the effects of various operating conditions were investigated: total feed flow rate, total catalyst weight, reactor temperature, and feed gas ratio. A time-on-stream test of the most outstanding catalyst revealed that its catalyst durability was excellent for 24 h of testing at 580 °C.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Anusorn Seubsai
Role:
Thesis Advisor
Name: Chanin Panjapornpon
Role:
Thesis Co-Adviso
Created:
2022
Modified:
2025-06-24
Issued:
2025-06-24
วิทยานิพนธ์/Thesis
วิทยานิพนธ์/Thesis
application/pdf
URL: http://www.lib.ku.ac.th/KUthesis/2565/santipab-ampa-all.pdf
CallNumber:
TP359.M4.S26
eng
DegreeName: Master of Engineering
Level: Master's Degree
Descipline: Chemical Engineering
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.033083 วินาที
Santipab Ampansang.
| Title | Contributor | Type |
|---|---|---|
| Direct conversion of Methane over alumina supported cobalt modified by alkaline earth catalysts
มหาวิทยาลัยเกษตรศาสตร์ Santipab Ampansang. | Anusorn Seubsai Chanin Panjapornpon | วิทยานิพนธ์/Thesis |
Anusorn Seubsai
Chanin Panjapornpon