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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/10166
Title: Effect of Ti/Al ratio on the performance of Ni/TiO2-Al2O3 catalyst for methane reforming with CO2
Authors: Shah M.
Bordoloi A.
Nayak A.K.
Mondal P.
Published in: Fuel Processing Technology
Abstract: A series of mesoporous nanocrystalline TiO2-Al2O3 supports containing 0 to 100% alumina were synthesized via improved evaporation-induced self-assembly (EISA) strategy. The surface of the mixed oxide supports was decorated with nickel nanoparticles (10 wt%) via urea deposition-precipitation method. The catalysts containing different Ti/Al ratio were examined for methane reforming with CO2 regarding their activity and stability. Catalysts in both calcined, as well as in spent stages, were comprehensively characterized by various techniques like N2-physisorption analysis (BET), XRD, H2-TPR, NH3-TPD, TGA/DTG, SEM, ICP-MS, and TEM. The results show that a synergy between TiO2 and Al2O3 exist, and the doping of alumina with titania enhanced the catalytic activity and stability for an optimum doping ratio. The deactivation of pure titania supported catalyst was probably due to the sintering of Ni crystallites, partial coverage of Ni active sites by the TiOx species and the shrinkage of titania structure, however, it presents a high coke resistive catalyst. Doping up to 25% of alumina with titania was shown to retard the crystal growth of titania and redox characteristics of titania suppressed the deposition of coke over the catalyst surface. Different characterization techniques confirm the increase in coke deposition in TAL catalysts with an increase in alumina content. © 2019 Elsevier B.V.
Citation: Fuel Processing Technology (2019), 192(): 21-35
URI: https://doi.org/10.1016/j.fuproc.2019.04.010
http://repository.iitr.ac.in/handle/123456789/10166
Issue Date: 2019
Publisher: Elsevier B.V.
Keywords: Binary oxide support
Dry reforming
Nanoparticles
Support composition
ISSN: 3783820
Author Scopus IDs: 56233519300
22233658700
7103013292
57200197409
Author Affiliations: Shah, M., Department of Chemical Engineering, Indian Institute of Technology Roorkee, India
Bordoloi, A., Refining Technology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
Nayak, A.K., Department of Mathematics, Indian Institute of Technology Roorkee, India
Mondal, P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, India
Funding Details: The authors thank DST India for funding in the form of AISRF-Grant Challenge project. The authors also acknowledge the support from IIT Roorkee and CSIR-IIP , Dehradun. Appendix A
Corresponding Author: Mondal, P.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: mondal2001@gmail.com
Appears in Collections:Journal Publications [MA]

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