Experimental Investigation of Fe–Ni–Al Oxygen Carrier Derived from Hydrotalcite-like Precursors for the Chemical Looping Gasification of Biomass Char
| Autor: | Fang He, Zhen Huang, Haibin Li, Kun Zhao, Anqing Zheng, Weina Zhao, Zengli Zhao, Xianshuang Wu, Guoqiang Wei |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Hydrotalcite 020209 energy General Chemical Engineering Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Oxygen law.invention Fuel Technology chemistry Chemical engineering law 0202 electrical engineering electronic engineering information engineering Organic chemistry Calcination Heat of combustion Char 0210 nano-technology Chemical looping combustion Syngas Hydrogen production |
| Zdroj: | Energy & Fuels. 31:5174-5182 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.7b00208 |
| Popis: | Chemical looping gasification (CLG) of biomass uses the lattice oxygen of oxygen carriers to convert biomass into syngas with a low tar content, high heating value, and low price. It is of key importance to exploit well-dispersed and thermally stable oxygen carriers for the CLG process. In the current work, a series of oxygen carriers with varied Fe and Ni molar ratios were synthesized from hydrotalcite compound precursors (HTlcs), which made the metallic elements mix at the molecular level. Consequently, highly dispersed complex metal oxygen carriers can be achieved after precursor calcinations. CLG of biomass char was carried out in TGA and a fixed bed reactor accompanied by various physical and chemical analyses for the fresh and used oxygen carriers. The result manifested the HTlcs crystalline form, which was formed in the precursors and produced the Fe0.99Ni0.6Al1.1O4 compound after calcination, suggesting that a high degree dispersion of the multimetal oxygen carrier was synthesized. The main H2 upt... |
| Databáze: | OpenAIRE |
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