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论文类型：期刊论文

发表时间：2018-04-05

发表刊物：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录刊物：SCIE、EI

卷号：43

期号：14

页面范围：6795-6803

ISSN号：0360-3199

关键字：Hydrogen; Steam reforming; Acetic acid; Perovskite; La1-xCexNiO3

摘要：In this work, La1-xCexNiO3 perovskite-type oxide derived catalysts were synthesized for hydrogen generation from acetic acid steam reforming process (AcSR), and the effect of Ce substitution was investigated. Various techniques were applied to characterize the properties of synthesized catalysts including X-ray diffraction (XRD), H-2 temperature-programmed reduction (TPR), H-2 chemisorption, transmission electron microscopy (TEM), N-2 adsorption-desorption, and thermogravimetric analysis (TGA). The characterization results demonstrated that the perovskite-type oxide derived catalysts possessed uniform Ni dispersion and small Ni particle size. The adding of Ce remarkably increased the metal support interaction, improved the coke resistance and enhanced the water gas shift reaction. The reactivity and stability tests were conducted in a fixed-bed reactor. The La0.9Ce0.1NiO3 exhibited the best performance for AcSR with an average H-2 yield of 90%, an average acetic acid conversion of 95%, and an accumulated coke deposition of 11.8 wt% in a 30-h stability test. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.