纳米棒
催化作用
材料科学
选择性
X射线光电子能谱
纳米管
纳米结构
化学工程
纳米颗粒
氧化钒
纳米技术
钒
无机化学
碳纳米管
化学
有机化学
冶金
工程类
作者
Lucas Warmuth,Patrick Lott,Olaf Deutschmann,Claus Feldmann
出处
期刊:Chemcatchem
[Wiley]
日期:2023-01-18
卷期号:15 (3)
被引量:2
标识
DOI:10.1002/cctc.202201354
摘要
Abstract Vanadium oxide (VO x ‐Pd) nanotubes as well as VO x ‐coated ZnO nanorods (ZnO@VO x ‐Pd) and VO x ‐coated, layered‐titania nanotubes (l‐TiO 2 @VO x ‐Pd) are decorated with Pd nanoparticles and evaluated for selective catalytic reduction with hydrogen (H 2 ‐SCR) for the first time. The nanostructures exhibit lengths of 300 to 700 nm, diameters of 20–100 nm and, in the case of the nanotubes, an inner tube diameter of about 10 nm. Pd nanoparticles (14±5 nm) are well‐dispersed over the respective nanorod/nanotube nanostructure. Structure and composition are characterized by SEM, TEM, EDXS with element mapping, XPS, FT‐IR, XRD, and sorption analysis. Thermal analysis indicates the nanostructures to be thermally stabile up to 350 °C (VO x ), and 500 °C (ZnO@VO x , l‐TiO 2 @VO x ). All catalysts are tested for their activity in regard of the selective catalytic reduction of NO with H 2 , revealing a significant impact of the catalyst support on both activity and selectivity. Specifically, l‐TiO 2 @VO x nanotubes show promising properties with an activity up to 70 % and a selectivity up to 80 % N 2 .
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