Prussian blue analogues as heterogeneous catalysts for hydrogen generation from hydrolysis of sodium borohydride: a comp
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ORIGINAL PAPER
Prussian blue analogues as heterogeneous catalysts for hydrogen generation from hydrolysis of sodium borohydride: a comparative study Duong Dinh Tuan1 · Eilhann Kwon2 · Jia‑Yin Lin1 · Xiaoguang Duan3 · Yi‑Feng Lin4 · Kun‑Yi Andrew Lin1 Received: 11 March 2020 / Accepted: 17 August 2020 © Institute of Chemistry, Slovak Academy of Sciences 2020
Abstract As a special class of coordinated frameworks comprised of various metal species, Prussian blue analogues (PBAs) have received increasing attention for catalytic applications. Nevertheless, few studies have been performed to investigate catalytic activities of PBAs for hydrogen generation (HG) from N aBH4 hydrolysis. No researches have been implemented to examine effects of different MII and MIII of PBAs (MII3[MIII(CN)6]2) (MII = Co, Fe, Mn, Ni, and Zn; MIII = Fe, Co) on NaBH4 hydrolysis for HG. Thus, the aim of the study is to explore and compare catalytic activities of various PBAs for HG from NaBH4 hydrolysis. While two hexacyano-metalates and different metals are used to obtain various PBAs, Co3[Co(CN6)]2 (Co–Co) is the most effective PBA for HG from NaBH4 hydrolysis. Furthermore, Co–Co has a much lower Ea of 37.6 kJ/mol for HG from NaBH4 hydrolysis in comparison to Ea values by other reported catalysts. Besides, HG by Co–Co could be optimized in the presence of 5% NaOH concentration, which leads to an even lower Ea of 28.6 kJ/mol. Co–Co is also reusable and stable for multiple cycles of HG. These features reveal that Co-containing PBAs can be a promising heterogeneous catalyst to facilitate HG from NaBH4 hydrolysis. Keywords Prussian blue analogues · Mofs · H2 · Sodium borohydride · Catalytic hydrolysis
Introduction Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11696-020-01326-8) contains supplementary material, which is available to authorized users. * Yi‑Feng Lin [email protected] * Kun‑Yi Andrew Lin [email protected] 1
Department of Environmental Engineering, Innovation and Development Center of Sustainable Agriculture, Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo‑Kuang Road, Taichung, Taiwan
2
Department of Environment and Energy, Sejong University, 209 Neungdong‑ro, Gunja‑dong, Gwangjin‑gu, Seoul, Republic of Korea
3
School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
4
Department of Chemical Engineering, R&D Center for Membrane Technology, Chung Yuan Christian University, 200 Chung Pei Rd., Chungli, Taoyuan, Taiwan
Hydrogen (H2) is considered as a promising renewable energy carrier to replace conventional fossil fuels (Jacobson et al. 2005). Unfortunately, H2 storage has been a barrier for large-scale implementation in view of safety issues of high-pressure H2 storage and complicated production procedures (Demirci and Miele 2009). Hence, a benign and straightforward approach for storage and release of H2 gas is highly desirable. Recently, H
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