期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 41, 页码 18790-18800出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.08.103
关键词
Fluidized bed; Nickel; Benzene; Dry reforming; Chemical looping; Gasification tar
资金
- Agriculture and Food Research Initiative Competitive Grant from the USDA National Institute of Food and Agriculture [2015-67021-22842]
- Alabama Agricultural Experiment Station [ALA014-1-13006]
- Southeastern Sun Grant Center
- US Department of Transportation, Research and Innovative Technology Administration [DTO559-07-G-00050]
Gasification tar during a fluidized bed operation impedes syngas utilization in downstream applications. Among tar constituents sampled during biomass gasification, benzene was the most abundant species. Thus, benzene was used as a model compound for chemical looping dry reforming (CLDR) over iron (Fe) and nickel (Ni) metals impregnated on silicon carbide (SiC) in a lab-scale fluidized bed reactor to convert it into hydrogen and carbon monoxide (H-2 and CO). A high benzene conversion rate (>90%) was observed at a higher experimental temperature (above 730 degrees C). Catalytic conversion of benzene using NiFe/SiC catalyst resulted in higher H-2 production whereas higher levels of CO were produced with Fe/SiC catalyst at an elevated temperature. Control experiments using an empty bed and SiC bed showed the formation of both the biphenyls and excessive carbon deposits. Air oxidation was also performed for the regeneration of oxygen carrier during the chemical looping operation. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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