Nickel supported on low-rank coal for steam reforming of ethyl acetate. (16th August 2018)

• Record Type: Journal Article
• Authors: Ruhswurmova, Nikola; Kim, Soohyun; Yoo, Jiho; Chun, Donghyuk; Rhim, Youngjoon; Lim, Jeonghwan; Kim, Sangdo; Choi, Hokyung; Lee, Sihyun
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 33(2018)
• Page Start: 15880
• Page End: 15890
• Publication Date: 2018-08-16
• Subjects: Low-rank coal -- Carbon support -- Catalytic support -- Steam reforming -- Nickel -- Ethyl acetate; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.06.104
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Ethyl acetate is a volatile organic compound (VOC) that has emerged as a major environmental pollutant and also one of representative components of bio-oil. In this study, mostly metallic Ni particles (size: <10 nm) were finely dispersed on low-rank coal (LRC) by the ion-exchange process. Catalytic steam reforming of ethyl acetate (EA) was performed over Ni supported on Eco LRC (Ni/Eco) to reduce EA emissions and simultaneously produce H2 . EA reforming over 17.7 wt% Ni/Eco at 400 °C results in H2 yield of 70%–80%; this is comparable to that achieved with reforming over commercial Ni/Al2 O3 . Advantageously, metallic Ni particles are dominant over Ni oxides on LRC, and therefore, the pre-reduction step routinely required for an alumina-supported catalyst can be skipped. Furthermore, deactivation by coking is slower with Ni/Eco than with Ni/Al2 O3 during long-term operation, probably because of the smaller particle size and preferential adsorption on the coal support. Graphical abstract: Highlights: Nano-dispersion of Ni on low rank coal (LRC) is achieved. LRC-supported Ni catalyses the steam reforming of ethyl acetate. Ni particles on LRC are mostly in active metallic form. Ni on LRC is less susceptible to coking-related deactivation.