Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics

doi:10.1021/acsami.9b21077

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics
	Wang, Shujian ; Wu, Chunzheng ; Yu, Hongbo ; Li, Tong ; Yan, Xuedong ; Yan, Bo ; Yin, Hongfeng
刊名	ACS APPLIED MATERIALS & INTERFACES
	2020
卷号	12 期号:8 页码:9966-9976
关键词	CORE-SHELL NANOCATALYSTS CHEMOSELECTIVE HYDROGENATION SILICA NANOPARTICLES CATALYTIC-ACTIVITY PERFORMANCE IRIDIUM OXIDATION CARBON FE RH
DOI	10.1021/acsami.9b21077
英文摘要	Nanosized Ir catalysts suffer from serious side reactions and poor stability during hydrogenation of substituted nitroaromatics to produce aromatic amines. In this work, core-shell nanostructures with sub-4 nm Ir-CoOx hybrid cores and mesoporous SiO2 shells were designed and prepared to overcome these problems. The Ir-CoOx hybrid cores were converted from IrCo alloy nanoparticles (NPs) inside SiO2 through in situ calcination and reduction pretreatments. The SiO2 mesoporous shells in Ir-CoOx@SiO2 nanoreactors prevented the agglomeration/sintering of IrCo NPs, while allowing the free reactants and products (big molecules). The synergy between Ir and CoOx species improved H-2 adsorption, thus affecting the reaction rate as well as the selectivity to aromatic amines. As a result, the obtained Ir-CoOx@SiO2 nanocatalyst showed tremendous improvement in catalytic activity, selectivity, and stability.
学科主题	Science & Technology - Other Topics ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19949]
专题	2020专题
作者单位	1.Yin, HF (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. 2.Yu, HB
推荐引用方式 GB/T 7714	Wang, Shujian,Wu, Chunzheng,Yu, Hongbo,et al. Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(8):9966-9976.
APA	Wang, Shujian.,Wu, Chunzheng.,Yu, Hongbo.,Li, Tong.,Yan, Xuedong.,...&Yin, Hongfeng.(2020).Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics.ACS APPLIED MATERIALS & INTERFACES,12(8),9966-9976.
MLA	Wang, Shujian,et al."Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics".ACS APPLIED MATERIALS & INTERFACES 12.8(2020):9966-9976.