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Thitiwut Sukprom. Direct conversion of Methane to hydrocarbons using hybrid catalysts of NiAl2O3 and K-CoAl2O3. Master's Degree(Chemical Engineering). Kasetsart University. Office of the University Library. : Kasetsart University, 2022.
Direct conversion of Methane to hydrocarbons using hybrid catalysts of NiAl2O3 and K-CoAl2O3
Name: Thitiwut Sukprom
Classification :.LCCS: TP359.M4
LCSH:
Methane
LCSH:
Synthesis gas
LCSH:
Hydrocarbons
LCSH:
Catalysts
LCSH:
Metal catalysts
Abstract:
A direct conversion of methane (CH4) to value-added hydrocarbons (C2+) using a hybrid catalyst was studied. The hybrid catalyst consisting of Ni/Al2O3 as the first catalyst layer aimed for conversion of CH4 to carbon monoxide and K-Co/Al2O3 as the second catalyst layer aimed for conversion of carbon monoxide to C2+. This hybrid catalyst works effectively at a relatively lower temperature (490 °C) compared to other catalysts in oxidative coupling of methane (over 700 °C). Effects of operating conditions at atmospheric pressure, including temperature, feed flow rate, feed ratio (CH4/O2), catalyst ratio in the hybrid catalyst, and weight of the hybrid catalyst, were investigated. The highest C2+ yield at 4.3% C2+ yield with 15.80% C2+ selectivity and 27.19% CH4 conversion was achieved at a reactor temperature of 490ºC, a total feed flow rate of 40 mL/min, a CH4/O2 ratio of 2, a Ni/Al2O3/K-Co/Al2O3 ratio of 1, and 0.08 g of the hybrid catalyst. Catalyst characterization techniques including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, BET surface area analysis, and Xray photoelectron spectroscopy were used to determine the chemical and physical properties of the prepared catalysts. The K promoter played an essential role in enhancing the C2+ formation. A proposed mechanism for the reaction using the hybrid catalyst was also made. Furthermore, a time-on-stream test over 24 h of the hybrid catalyst showed that the stability of the catalyst was excellent during the test.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Anusorn Seubsai
Role:
Thesis Advisor
Created:
2022
Modified:
2025-07-23
Issued:
2025-07-23
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2565/thitiwut-suk-all.pdf
CallNumber:
TP359.M4 .T45
eng
DegreeName: Master of Engineering
Level: Master's Degree
Descipline: Chemical Engineering
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
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Thitiwut Sukprom
| Title | Contributor | Type |
|---|---|---|
| Direct conversion of Methane to hydrocarbons using hybrid catalysts of NiAl2O3 and K-CoAl2O3
มหาวิทยาลัยเกษตรศาสตร์ Thitiwut Sukprom | Anusorn Seubsai | วิทยานิพนธ์/Thesis |
Anusorn Seubsai