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A coke-resistant catalyst for the dry reforming of methane based on Ni nanoparticles confined within rice husk-derived mesoporous materials
Catalysis Communications ( IF 3.4 ) Pub Date : 2019-12-03 , DOI: 10.1016/j.catcom.2019.105898
Luis A. Salazar Hoyos , Betina M. Faroldi , Laura M. Cornaglia

Mesoporous MCM-41 materials were obtained using Rice Husk Ashes (RHA) as silica source. Ni-based catalysts were synthesized using two metal incorporation methods, one-pot synthesis combined with microwave heating, and incipient wetness impregnation. Smaller Ni particles were obtained by the former method. The catalyst denominated Ni-MCM had the best performance in the dry reforming of methane reaction at 873 K. High stability was also obtained even after 100 h on stream at 973 K. The mesoporous structure and Ni nanoparticles were not significantly modified, as observed by TEM microscopy. Besides, a very low amount of carbon deposits was detected employing several techniques in the Ni-MCM catalyst used at 973 K.



中文翻译:

基于受限于稻壳中孔材料中的Ni纳米颗粒的甲烷干重整用抗焦化催化剂

使用稻壳灰(RHA)作为二氧化硅源获得了介孔MCM-41材料。使用两种金属结合方法,一锅法结合微波加热和初期湿润浸渍法,合成了镍基催化剂。通过前一种方法可获得较小的Ni颗粒。以Ni-MCM为催化剂的催化剂在873 K的甲烷干法重整中具有最佳性能。即使在973 K运转100 h后也获得了高稳定性。 TEM显微镜。此外,采用几种技术在973 K的Ni-MCM催化剂中检测到极少量的碳沉积物。

更新日期:2019-12-04
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