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Structured silicalite‐1 encapsulated Ni catalyst supported on SiC foam for dry reforming of methane
Author(s) -
Chen Huanhao,
Shao Yan,
Mu Yibing,
Xiang Huan,
Zhang Rongxin,
Chang Yabin,
Hardacre Christopher,
Wattanakit Chularat,
Jiao Yilai,
Fan Xiaolei
Publication year - 2021
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.17126
Subject(s) - catalysis , sintering , methane , materials science , carbon dioxide reforming , silicon carbide , chemical engineering , zeolite , syngas , metallurgy , chemistry , organic chemistry , engineering
Structured silicalite‐1 zeolite encapsulated Ni catalyst supported on silicon carbide foam (i.e., Ni@S1‐SiC) was prepared using a new yet simple one‐pot method, showing the significantly improved anti‐sintering and anti‐coking performance in comparison with the conventional supported and encapsulated Ni catalysts (i.e., Ni/S1, Ni/S1‐SiC, and Ni@S1), in catalytic dry reforming of methane (DRM). The developed Ni 0.08 @S1‐SiC catalyst showed high CO 2 /CH 4 conversions of >85% and H 2 /CO molar ratio of >0.85 at 700°C, outperforming other control catalysts under investigation. Additionally, the Ni 0.08 @S1‐SiC catalyst demonstrated high turnover frequency (TOF) values of ~5.6 and ~2.1/s regarding to CO 2 /CH 4 conversions at 400°C, exhibiting excellent stability and low pressure‐drop during 100 hr on stream evaluation. Post‐reaction characterization of the used catalysts demonstrated that the combination of zeolite encapsulated Ni catalysts and SiC foam enabled well‐dispersed and ultrafine Ni nanoparticles, low pressure drop and intensified transfer steps, presented excellent anti‐sintering and anti‐coking abilities.