| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.1283 |
| 발표분야 |
[주제별 심포지엄] 탄소중립적 수소 생산 기술 심포지엄(촉매부문위원회) |
| 제목 |
Thermally stable monodispersed Ni-Co nanoparticles encapsulated with SiO2 shell for dry reforming of methane |
| 초록 |
Enhanced thermal and catalytic stability of monodispersed Ni-Co nanoparticles with homogeneous size distribution of ~6 nm encapsulated with SiO2 shells (NC@Si) were verified for a dry reforming of methane with CO2 (DRM). The extents of coke formation and aggregation of Ni-Co nanoparticles were effectively suppressed with positive contributions of oxophilic Co species as well as by their spatial confinement effects. The optimal N8C2@Si with Ni/Co molar ratio of 4 revealed relatively higher CH4 and CO2 conversions of 74.1 and 83.7% at T = 800 oC without significant deactivation. A superior catalytic activity and stability of the N8C2@Si were attributed to the highly-dispersed oxophilic metallic cobalt oxides in monodispersed Ni-Co nanoparticles, which enhanced CO2 adsorption capacity and increased thermal stability of spatially confined Ni-Co nanoparticles with the help of mesoporous SiO2 shells at its optimal aging time less than 4 h. |
| 저자 |
배종욱, 박경수, 권재현, 유지수, 정소윤
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| 소속 |
성균관대 |
| 키워드 |
Multicore-shell structured Ni-Co@SiO2; Dry reforming of methane with CO2 (DRM); Ni-Co nanoparticles; Spatial confinement effects; Deactivation by coke precursors
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| E-Mail |
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| 원문파일 |
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