Journal
CHEMICAL ENGINEERING SCIENCE
Volume 231, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2020.116320
Keywords
Methane reforming; Syngas; Fibre-like zeolite; Coke resistance; Optimization
Categories
Funding
- Universiti Teknologi Malaysia Transdisciplinary Grant [06G52, 06G53]
Ask authors/readers for more resources
The catalytic performance of fibre-like Ta-promoted Ni/ZSM-5 in dry reforming of methane was studied to obtain a robust catalyst for large-scale syngas production. The introduction of Ta was shown to improve the dissociation rate of reactants and carbon gasification. Operating temperature was found to be the most significant parameter influencing CH4 conversion, with the optimum conversion predicted at specific reaction conditions.
The catalytic performance of fibre-like Ta-promoted Ni/ZSM-5 in dry reforming of methane (DRM) was studied under different feeding compositions for obtaining a robust catalyst, which is important for large-scale production of syngas via DRM. The deactivation of unpromoted Ni/ZSM-5 was due to polymerization of carbon deposits which block the active sites and accelerate agglomeration. Introduction of Ta was shown to facilitate the rate of dissociation of reactants and carbon gasification due to increased Ni-support interaction and surface oxygen species. From ANOVA analysis, operating temperature was found to be the most significant operating parameter that influence CH4 conversion. The optimum CH4 conversion predicted from the response surface analysis is 96.6% at reaction temperature of 784.15 degrees C, CO2:CH4 feed ratio of 2.52, and GHSV of 33,760 mL g(-1)h(-1). The strong catalytic stability is a result of the small-size and immobilized Ni sites which is vital for efficient DRM catalyst development. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available