Journal
CHEMICAL ENGINEERING SCIENCE
Volume 249, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2021.117347
Keywords
Carbon dioxide; Methane; Platinum; Reforming; Syngas
Categories
Funding
- GAIL (India) Limited [GAIL/NOIDA/R&D/ICT/CO2/2012/01]
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In this study, the performance of two Pt-based catalysts in the process of carbon dioxide reforming of methane (CDRM) was investigated. The effects of parameters such as space time, CO2/CH4 ratio, and time-on-stream on the conversion and yield of CH4 and CO2 were analyzed. The kinetics of CDRM were also studied and analyzed using different kinetic models.
Carbon dioxide reforming of methane (CDRM) is an effective way for syngas production. In this work, two laboratory-made Pt-based catalysts Pt/Al2O3 and Pt/ZrO2-SiO2 (Pt content = 0.5%) were used for the CDRM process in a fixed-bed reactor. The effects of changing space time (0.08-0.167 g-h/L) on CH4 and CO2 conversions and syngas ratio and yield were studied in the 773-1073 K range in an integral reactor. At 1073 K, the effects of CO2/CH4 ratio in the feed (0.5-2 mol/mol) and time-on-stream (up to 10 h) were investigated. For an equimolar feed of CH4 and CO2, the conversions of CH4 (72.6 and 70.6%) over Pt/ Al2O3 and Pt/ZrO2-SiO2 catalysts at T = 1073 K and space time = 0.167 g-h/L were comparable; the corresponding CO2 conversion values were 77.6 and 74.8%. The kinetics of CDRM was studied between 848 and 898 K in a differential reactor and the data were analyzed using the power-law and LangmuirHinshelwood kinetic models. (c) 2021 Elsevier Ltd. All rights reserved.
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