Mono and Bimetallic Pt–(M)/Al2O3 Catalysts for Dehydrogenation of Perhydro-N-ethylcarbazole as the Second Stage of Hydrogen Storage

• Published in: Catalysis letters Vol. 148; no. 5; pp. 1472 - 1477
• Main Authors: Tarasov, Andrey L., Tkachenko, Olga P., Kustov, Leonid M.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2018; Springer Nature B.V
• Subjects: Aluminum oxide; Bimetals; Catalysis; Catalysts; Chemistry; Chemistry and Materials Science; Chromium; Comparative studies; Dehydrogenation; Electron states; Hydrogen; Hydrogen storage; Industrial Chemistry/Chemical Engineering; Nanoparticles; Organometallic Chemistry; Palladium; Physical Chemistry; Platinum; Substrates; X ray absorption; Hydrogen storage; Pt-containing catalysts; X-ray absorption spectroscopy; ethylcarbazole; Dehydrogenation; Perhydro
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-018-2325-4

The comparative study of the activity of mono- and bimetallic Pt–(M)/Al 2 O 3 catalysts in perhydro- N -ethylcarbazole dehydrogenation as the second stage of hydrogen storage (hydrogen release) has been performed. It has been found that the activity of a Pt/Al 2 O 3 catalyst can be enhanced via the second metal (Cr, Pd) introduction. This fact gives the possibility to use Pt–(M)/Al 2 O 3 catalysts for the hydrogen storage process based on reversible cycles of hydrogenation–dehydrogenation of aromatic substrates. X-ray absorption spectroscopy (XANES and EXAFS) revealed that Cr introduction impacts the electronic state and local environment of Pt. The average size of platinum metal nanoparticles is about two times smaller in Pt–Cr/Al 2 O 3 compared to Pt/Al 2 O 3 . Graphical Abstract