Effect of boron doping and preparation method of Ni/Ce0.5Zr0.5O2 catalysts on the performance for steam reforming of ethanol. (31st May 2019)

• Record Type: Journal Article
• Authors: Wu, Ruei-Ci; Tang, Chih-Wei; Huang, Hsin-Hua; Wang, Chih-Chia; Chang, Moo-Been; Wang, Chen-Bin
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 28(2019)
• Page Start: 14279
• Page End: 14289
• Publication Date: 2019-05-31
• Subjects: Ethanol -- Steam reforming -- Hydrogen production -- Boron -- Coke; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.02.065
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Ce0.5 Zr0.5 O2 supported Ni-based catalysts with a Ni loading of 10 wt% and a B loading of 0.5 wt% were prepared by co-precipitation (assigned as NiCeZr(C) and BNiCeZr(C), respectively) and impregnation (assigned as NiCeZr(I) and BNiCeZr(I), respectively) procedures to evaluate the effects of fabrication methods and B-doped on the catalytic performance for steam reforming of ethanol (SRE). These catalysts were characterized with XRD, TPR, TPO, TEM, BET, TG and EA. The well dispersed active species that can be obtained through co-precipitation and formation of a NiB alloy come from a B-doped catalyst, which can promote catalysis performance and reaction pathway. Further, it can improve the selectivity of hydrogen for a SRE reaction. Also, the B-doped catalysts possess a high oxygen storage capacity (OSC) via formation of CeBO3 under SRE ambience, which is the factor for removal of the carbonaceous species. TG and EA analyses demonstrate that there are fewer carbon deposits for the B-doped catalysts. The performance of the BNiCeZr(C) catalyst was preferential among these catalysts. Graphical abstract: Image 1 Highlights: Highly active B-doped Ni-based catalysts on SRE have been fabricated. Dispersed active species and NiB alloy possess potential catalysis performance. A CeBO3 intermediate can promote the removal of deposited coke.