2019年11月21日
Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane
ChemCatChem
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- 巻
- 11
- 号
- 22
- 開始ページ
- 5593
- 終了ページ
- 5605
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/cctc.201901098
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim In this study, redox exsolution method was used to synthesize Co/Co−Al spinel for dry reforming. The aim is to improve metal-support interaction, which enhances the catalyst's stability and minimizes carbon deposition. The synthesized catalysts were observed as Co embedded on Co deficient CoAl2O4-like spinel (denoted as Co−Al spinel). The reduction temperature was optimized at 750 °C. Investigations on the effect of Co loading revealed that optimum Co loading is needed to control the Co particle size, providing balance between limiting carbon deposition rate and preventing dissolution of Co into the support. The best performing catalyst, Co-15, in which the molar ratio of Co and Al is 15 : 85 produced a stable 81.5 % and 87.4 % conversions for CH4 and CO2 continuously over 24 h of reaction time with 13.51 wt% of carbon deposition. The strong metal-support interaction of Co and Co−Al spinel in Co-15 stabilizes and prevents the sintering of Co particles, enhancing the efficiency for dry reforming reaction.
- リンク情報
- ID情報
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- DOI : 10.1002/cctc.201901098
- ISSN : 1867-3880
- eISSN : 1867-3899
- SCOPUS ID : 85073961767