Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-20776
Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Potassium titanate nanobelts : a unique support for Au and AuRh nanoparticles in the catalytic reduction of NO with CO
Authors: Baiker, Alfons
Wang, Xianwei
Maeda, Nobutaka
Meier, Daniel Matthias
et. al: No
DOI: 10.1002/cctc.202001401
10.21256/zhaw-20776
Published in: ChemCatChem
Volume(Issue): 13
Issue: 1
Pages: 438
Pages to: 444
Issue Date: 13-Oct-2020
Publisher / Ed. Institution: Wiley
ISSN: 1867-3880
1867-3899
Language: English
Subjects: Bimetallic AuRh; Potassium titanate nanobelt; NO reduction with CO; Isocyanate; In situ IR spectroscopy
Subject (DDC): 660: Chemical engineering
Abstract: The catalytic reduction of NO with CO was examined over monometallic Au and bimetallic AuRh nanoparticles supported on potassium titanate (K2Ti8O17) nanobelts (KTN) and TiO2. The highly crystalline KTN, prepared from TiO2 by a hydrothermal process using KOH, were several μm long and ca. 8 nm wide. Both Au and bimetallic AuRh catalysts showed a striking enhancement of the catalytic performance with KTN as support, compared to corresponding TiO2- supported catalysts. The reasons for this behavior could be traced back using in situ diffuse reflectance infrared Fourier transform spectroscopy in tandem with modulation excitation spectroscopy, which proved that the KTN support promotes the formation of surface nitrate (-NO3-), carbonate (-CO32-), and isocyanide (-NCO) species. In particular, the combination of KTN with bimetallic AuRh nanoparticles results in the facile formation of isocyanide, which is a pivotal intermediate for producing dinitrogen molecules via the reaction with NO; NCO(a) + NO(a) → N2 + CO2.
URI: https://digitalcollection.zhaw.ch/handle/11475/20776
Fulltext version: Accepted version
License (according to publishing contract): Licence according to publishing contract
Restricted until: 2021-10-13
Departement: School of Engineering
Organisational Unit: Institute of Materials and Process Engineering (IMPE)
Appears in collections:Publikationen School of Engineering

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