期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 44, 期 39, 页码 21651-21658出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.06.113
关键词
CO2 reforming of CH4; In-situ reduction; Nickel; Glucose; Carbon
资金
- Natural Science Foundation of Liaoning Province [20180510057]
In this work, the vacuum co-impregnation of glucose and nickel precursor followed by the carbonization in an inert gas was developed as a new method for the preparation of the directly reduced Ni-based catalysts (Ni-C/Al2O3), which can be directly applied for CO2 reforming of CH4 (CRM) without any reduction. The materials were characterized by XRD, TEM, and N-2 adsorption-desorption at low temperature. The results showed that H-2 and CH4 derived from the decomposition of the glucose acted as the reducing agents for synthesizing metallic Ni from Ni precursors, and the reduction content of nickel was strongly dependent on the amount the glucose. The introduction of carbon derived from decomposition of glucose decreased the interaction between Ni and Al2O3 and then resulting in bigger Ni particle. Under the same CAM reaction conditions, the as-prepared Ni-0.35C/Al2O3 catalyst without further reduction showed highest catalytic activity and stability. The use of the directly reduced Ni-based catalyst without further high-temperature reduction is promising for the development of a more efficient CRM process. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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