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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 30, 2024
Accepted January 19, 2025
Available online March 25, 2025

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Silanol-Enhanced Dehydrogenation of Ammonia Borane with Silicic Acid Catalyst

Hosun Aum Jeewoo Kim Hyungu Kang¹ Kyungdon Baik¹ Jihoon Jung^†

Department of Chemical Engineering , Kyonggi University , 154-42, Gwanggyosan-ro, Yeongtong-gu , Suwon-si , Gyeonggi-do 16227 , Republic of Korea ¹Agency for Defense Development , 160, Bugyuseong-daero 488beon-gil, Yuseong-gu , Daejeon 34060 , Republic of Korea

jhjung@kgu.ac.kr

Korean Journal of Chemical Engineering, March 2025, 42(3), 679-687(9)
https://doi.org/10.1007/s11814-025-00400-9

Abstract

Ammonia borane (AB), with a 19.6-wt% H 2 content, is a promising hydrogen storage material for polymer electrolyte

membrane fuel cells (PEMFC). However, traditional thermal decomposition of boric acid generates ammonia, which is

detrimental to fuel cells. This study explores the use of silicic acid (SA) as a catalyst for AB, yielding 12.0 wt% of H 2 at

approximately 100 °C, making it suitable for fuel-cell operation. Notably, when the AB mass ratio is increased to 90 wt%,

the reaction temperature increases slightly, yet it produces up to 12.3 wt% of H 2 . Fourier transform infrared (FT-IR) and

X-ray photoelectron spectroscopy (XPS) analyses confi rm that SA contains more silanol groups than SiO

Keywords

Ammonia borane · Silicic acid catalyst · Silanol · Hydrogen storage · Dehydrogenation reaction