NDLI: Synthesis of tungsten carbide nanoparticles in biochar matrix as a catalyst for dry reforming of methane to syngas

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Yebo Lu, Yongwu Yu, Fei Yan, Qiangu To, Filip
Copyright Year	2015
Abstract	Tungsten carbide (WC) nanoparticles were synthesized by carbothermal reduction (CR) of tungsten-promoted biochar. The tungsten carbide nanoparticles were characterized for physicochemical properties by multiple morphological and structural methods (e.g. SEM, TEM, and XRD). Characterization results revealed that the transformation of tungsten oxide (WO3) to tungsten carbide nanoparticles involved the following sequence steps: WO3 → WO2 → W → W2C → WC. The lower the reaction temperature, the lower the CH4 and CO2 conversions, as well as the lower CO yield, since dry reforming is an endothermic reaction. CH4 conversion was observed to decrease with an increase in CH4/CO2 ratio, whereas CO2 conversion increased with an increase in CH4/CO2 ratio. The higher the GHSV, the lower the CH4 and CO2 conversions as well as the lower the CO yield. Stability testing of the tungsten carbide nanoparticles in the biochar matrix showed no catalyst deactivation during the 500 hours test duration.
Starting Page	3270
Ending Page	3280
Page Count	11
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	5
Issue Number	6
Journal	Catalysis Science & Technology
DOI	10.1039/c5cy00029g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	X-ray crystallography Endothermic process Tungsten carbide Tungsten oxide Transmission electron microscopy Mitochondrial matrix GHSV Carbothermic reaction Carbon dioxide reforming Biochar
Content Type	Text
Resource Type	Article
Subject	Catalysis

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