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Nano‐engineered nickel catalysts supported on 4‐channel α‐Al2O3 hollow fibers for dry reforming of methane
AIChE Journal ( IF 3.7 ) Pub Date : 2018-03-30 , DOI: 10.1002/aic.16160
Zeyu Shang 1 , Shiguang Li 2 , Qingfa Wang 3 , Xuehong Gu 4 , Xinhua Liang 1
Affiliation  

A nickel (Ni) nanoparticle catalyst, supported on 4‐channel α‐Al2O3 hollow fibers, was synthesized by atomic layer deposition (ALD). Highly dispersed Ni nanoparticles were successfully deposited on the outside surfaces and the inside porous structures of hollow fibers. The catalyst was employed to catalyze the dry reforming of methane (DRM) reaction and showed a methane reforming rate of 2040 Lh−1gNi−1 at 800°C. NiAl2O4 spinel was formed when Ni nanoparticles were deposited on alpha‐alumina substrates by ALD, which enhanced the Ni‐support interaction. Different cycles (two, five, and ten) of Al2O3 ALD films were applied on the Ni/hollow fiber catalysts to further improve the interaction between the Ni nanoparticles and the hollow fiber support. Both the catalyst activity and stability were improved with the deposition of Al2O3 ALD films. Among the Al2O3 ALD coated catalysts, the catalyst with five cycles of Al2O3 ALD showed the best performance. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2625–2631, 2018

中文翻译:

纳米工程镍催化剂负载在4通道α-Al2O3中空纤维上,用于甲烷的干重整

镍(Ni)纳米颗粒催化剂,负载在4通道的α-Al 2 ö 3中空纤维,通过原子层沉积(ALD)来合成。高度分散的Ni纳米粒子成功沉积在中空纤维的外表面和内部多孔结构上。该催化剂用于催化甲烷(DRM)反应的干重整,并且在800℃下显示出2040 Lh -1 gNi -1的甲烷重整速率。通过ALD将Ni纳米颗粒沉积在α-氧化铝基底上时,形成了NiAl 2 O 4尖晶石,从而增强了Ni-载体的相互作用。Al 2 O 3的不同循环(两个,五个和十个)ALD膜应用于Ni /中空纤维催化剂上,以进一步改善Ni纳米粒子与中空纤维载体之间的相互作用。Al 2 O 3 ALD膜的沉积提高了催化剂的活性和稳定性。在Al 2 O 3 ALD涂覆的催化剂中,具有五个循环的Al 2 O 3 ALD的催化剂表现出最佳性能。©2018美国化学工程师学会AIChE J,64:2625–2631,2018
更新日期:2018-03-30
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