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Catalysts 2016, 6(6), 85; doi:10.3390/catal6060085

Dolomite-Derived Ni-Based Catalysts with Fe Modification for Hydrogen Production via Auto-Thermal Reforming of Acetic Acid

1
Department of Chemical and Pharmaceutical Engineering, Chengdu University of Technology, Chengdu 610059, China
2
Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
3
Richard G. Lugar Center for Renewable Energy, Indiana University-Purdue University, Indianapolis, IN 46224, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Ivan V. Kozhevnikov
Received: 18 May 2016 / Revised: 7 June 2016 / Accepted: 8 June 2016 / Published: 15 June 2016
View Full-Text   |   Download PDF [2014 KB, uploaded 15 June 2016]   |  

Abstract

Bio-oil can be obtained via fast pyrolysis of biomass, and typically contains acetic acid (~30 mass %). The acetic acid has often been tested as a model compound for hydrogen production via reforming bio-oil, in which catalysts are a key factor for stable hydrogen production. However, deactivation of catalysts by coking and oxidation hinders the application of the reforming process. Dolomite-derived Ni-based catalysts with Fe additive, MgNi0.2Ca0.8−xFexO2±δ (x = 0–0.8), were successfully synthesized by the hydrothermal synthesis method, and then tested in auto-thermal reforming (ATR) of acetic acid (AC). The MgNi0.2Ca0.5Fe0.3O2±δ catalyst performed a stable reactivity in ATR: the conversion of AC reached 100%, and the H2 yield remained stable around 2.6 mol-H2/mol-AC. The catalysts were characterized by X-ray diffraction (XRD), N2 physisorption, X-ray photoelectron spectra (XPS), H2-temperature-programmed reduction (TPR), inductively coupled plasma- atomic emission spectroscopy (ICP-AES) and Thermogravimetry (TG); the results show that a periclase-like solid solution of Mg(Ni,Fe)O and lime were formed via the precursors of dolomite and hydrotalcite, and then transformed into Fe-rich Ni-Fe alloy with basic support of MgO-CaO after reduction. The stable Ni0 spices with basic support can explain the stability and resistance to coking during ATR of AC. View Full-Text
Keywords: dolomite-derived Ni-based catalyst; auto-thermal reforming of acetic acid; hydrothermal synthesis; Ni-Fe alloy; bio-oil dolomite-derived Ni-based catalyst; auto-thermal reforming of acetic acid; hydrothermal synthesis; Ni-Fe alloy; bio-oil
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhong, X.; Xie, W.; Wang, N.; Duan, Y.; Shang, R.; Huang, L. Dolomite-Derived Ni-Based Catalysts with Fe Modification for Hydrogen Production via Auto-Thermal Reforming of Acetic Acid. Catalysts 2016, 6, 85.

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