In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 9, No. 34 ( 2021), p. 18385-18392
Abstract:
On-demand hydrogen generation from catalytic decomposition of hydrazine monohydrate (N 2 H 4 ·H 2 O) represents a promising chemical hydrogen storage technology for onboard and portable applications. But the performances of existing catalysts are still far from meeting the requirements of practical applications. Herein, we report the synthesis of the Ir–Ru–B/CeO 2 catalyst using a chemical reduction method followed by reductive annealing and its intriguing properties for catalyzing N 2 H 4 ·H 2 O decomposition under alkaline conditions. Our study demonstrates that Ir–Ru alloying, B-doping and the strong metal–support interactions could collectively contribute to the catalytic performance. As a consequence, the Ir–Ru–B/CeO 2 catalyst prepared under optimal conditions shows an unprecedented activity, which is over 4-fold higher than the best level of the state-of-the-art catalysts. Meanwhile, the catalyst exhibits high stability in cyclic usage, due presumably to its moderate binding strength with the intermediates/products of N 2 H 4 ·H 2 O decomposition. To the best of our knowledge, this is the first report of a B-doped noble metal alloy catalyst for N 2 H 4 ·H 2 O decomposition. Its impressive activity and stability may enlighten and encourage future exploration of high-performance catalysts for promoting the practical application of N 2 H 4 ·H 2 O as a viable hydrogen carrier.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
2702232-8
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