Efficient hydrogen supply through catalytic dehydrogenation of methylcyclohexane over Pt/metal oxide catalysts

• Published in: International journal of hydrogen energy Vol. 35; no. 9; pp. 4020 - 4026
• Main Authors: Shukla, Anshu A., Gosavi, Priti V., Pande, Jayshri V., Kumar, Vanama P., Chary, Komandur V.R., Biniwale, Rajesh B.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-05-2010; Elsevier
• Subjects: Alternative fuels. Production and utilization; Applied sciences; Catalysis; Catalysts; Dehydrogenation; Energy; Exact sciences and technology; Fuels; Hydrogen; Hydrogen delivery; Hydrogen storage; Metal oxides; Methylcyclohexane; Perovskite; Platinum; Pt over metal oxide; Pulse spray reactor; Selectivity; Pulse spray reactor; Perovskite; Hydrogen delivery; Pt over metal oxide; Methylcyclohexane; Dehydrogenation; Chemisorption; Scanning electron microscopy; Hydrogen storage; Cyclohexane derivatives; Hydrogen; Supported catalyst; Platinum; X ray diffractometry; Performance; Catalyst activity
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2010.02.014

This paper describes the results of experiments on dehydrogenation of methylcyclohexane over Pt supported on metal oxides (Pt/MO) and Pt supported on perovskite (Pt/Per) catalysts. The reaction is being considered as a means for delivery of hydrogen to fueling stations in the form of more easily transportable methylcyclohexane. Among Pt/MO catalysts, the best activity as determined by the hydrogen evolution rate was observed over Pt/La
2O
3 catalyst at 21.1 mmol/g
met/min. Perovskite-supported catalysts exhibited relatively higher activity and selectivity, with Pt/La
0.7Y
0.3NiO
3 giving the best performance. This Pt/Per catalyst had an activity of ca 45 mmol/g
met/min with nearly 100% selectivity towards dehydrogenation. The catalysts were characterized using XRD, CO-chemisorption and SEM-EDXA techniques. The present study reports catalysts that minimize the use of Pt and explores tailoring the properties of the perovskite structure.