Semester
Fall
Date of Graduation
2001
Document Type
Thesis
Degree Type
MS
College
Statler College of Engineering and Mineral Resources
Department
Chemical and Biomedical Engineering
Committee Chair
Edwin L. Kugler.
Abstract
The performance of cobalt tungsten carbide material was investigated for CH4/CO2 reforming. The catalyst was found to convert to a very stable, very active, form when heated in CH4/CO 2 at 850°C and 5 atm. Even after 90 hours on stream, CH4 and CO2 rates of 1.3 and 1.25 mmol/min/g respectively are obtained, with CO yields of 76% and H2/CO ratio close to unity. XRD patterns suggest a phase transformation to WC+Co+C. SEM images suggest formation of encapsulated carbon and whisker carbon.;The kinetics of CH4/CO2 reforming was studied under differential conditions over 500--600°C. The observed rates seem to follow a Langmuir-Hinshelwood type of reaction mechanism. A scheme consisting of four reactions was considered: methane reforming, reverse water gas shift, carbon deposition and reverse boudouard. Carbon deposition and carbon removal are generally disregarded in most of the reported kinetic-models. The parameters of the model were successfully estimated. The comparison plots of the observed data and the predicted model show a good fit.
Recommended Citation
Iyer, Mahesh Venkataraman, "New catalysts for syngas production from carbon dioxide and methane" (2001). Graduate Theses, Dissertations, and Problem Reports. 1196.
https://researchrepository.wvu.edu/etd/1196