Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 43, Issue 49, Pages 22170-22186Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.10.119
Keywords
Hydrogen production; Steam reforming; Coal tar; Ni-Co/ceramic foam catalyst
Categories
Funding
- National Natural Science Foundation of China [51476023, 51306029]
- China Postdoctoral Science Foundation [2016M600790, 2016M602828]
- Key Research and Development Plan of Shaanxi Province [2017GY167]
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The effect of Ni/Co ratio on the catalytic performance of Ni-Co/ceramic foam catalyst for hydrogen production by steam reforming of real coal tar was studied. The Ni-Co/ceramic foam catalyst was synthesized by deposition-precipitation (DP) method and characterized with different methods. The experiments were conducted in a two-stage fixed-bed reactor. The results showed that the reducibility of the metallic oxides in bimetallic Ni-Co/ceramic foam catalysts was influenced obviously by the Ni/Co ratio. Both gas and hydrogen yield increased first and then decreased with the decline of Ni/Co ratio, and the highest hydrogen yield of 31.46 mmol g(-1) was obtained when the Ni/Co ratio was 5/5. The lowest coke deposition of 0.34 wt% was generated at the same Ni/Co ratio. The lifetime test showed the catalyst maintained catalytic activity after 14 cycles (28 h), indicating the coal tar steam reforming on Ni-Co/ceramic foam catalyst is a promising method for hydrogen production. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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