Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 59, Issue 30, Pages 13370-13379Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.0c01213
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Funding
- Jiangsu Province Natural Science Foundation [BK20170526]
- National Natural Science Foundation of China [21703086, 51872128]
- National Key R&D Program of China from MOST of China [2017YFE0102700]
- Open Fund of Chemistry Department in Qingdao University of Science and Technology [QUSTHX201917]
- Senior Talents Start-Up Fund of Jiangsu University [16JDG062]
- Jiangsu Provincial Government Scholarship Program for overseas study
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Calcination plays an important role in obtaining high-performance catalysts for heterogeneous reactions. In this work, the effect of calcination temperature on the performance of the Ni@SiO2 catalyst in the methane dry reforming reaction was investigated. The calcination temperature from 823 to 1223 K led to different sizes of Ni nanoparticles and strengths of metal-support interactions in the catalysts, which consequently affected the performance of the reforming reaction. The highest performance was neither achieved over Ni@SiO2-T (T = 823 and 923 K) catalysts with small Ni sizes and weak metal-support interactions nor gained over Ni@SiO2-T (T = 1123 and 1223 K) catalysts with big Ni sizes and strong metal-support interactions, while it was obtained over the Ni@SiO2-1023 catalyst with intermediate Ni size and intermediate metal-support interactions. The volcanic relationship between the catalytic performance and catalyst calcination temperature was assigned to both the Ni size effect and metal-support interaction that their combination significantly influenced the performance of the methane dry reforming reaction. The combination strategy may provide a possible optimization approach for other heterogeneous catalytic reactions.
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