University of Oulu

Rontu, V., Selent, A., Zhivonitko, V., Scotti, G., Koptyug, I., Telkki, V., Franssila, S. (2017) Efficient Catalytic Microreactors with Atomic-Layer-Deposited Platinum Nanoparticles on Oxide Support. Chemistry - A European Journal, 23 (66), 16835-16842. doi:10.1002/chem.201703391

Efficient catalytic microreactors with atomic-layer-deposited platinum nanoparticles on oxide support

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Author: Rontu, Ville1; Selent, Anne2; Zhivonitko, Vladimir V.2,3,4;
Organizations: 1Department of Chemistry and Materials Science, Aalto University
2NMR Research Unit, University of Oulu
3Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS
4Novosibirsk State University
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2017120755405
Language: English
Published: John Wiley & Sons, 2017
Publish Date: 2018-11-09
Description:

Abstract

Microreactors attract a significant interest for chemical synthesis due to the benefits of small scales such as high surface to volume ratio, rapid thermal ramping, and well-understood laminar flows. The suitability of atomic layer deposition for application of both the nanoparticle catalyst and the support material on the surfaces of channels of microfabricated silicon microreactors is demonstrated in this research. Continuous-flow hydrogenation of propene into propane at low temperatures with TiO₂-supported catalytic Pt nanoparticles was used as a model reaction. Reaction yield and mass transport were monitored by high-sensitivity microcoil NMR spectroscopy as well as time-of-flight remote detection NMR imaging. The microreactors were shown to be very efficient in propene conversion into propane. The yield of 100 % was achieved at 50 °C with a reactor decorated with Pt nanoparticles of average size of roughly 1 nm and surface coverage of 3.2 % in 20 mm long reaction channels with a residence time of 1100 ms. The activity of the Pt catalyst surfaces was on the order of several to tens of mmol s−1 m−2.

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Series: Chemistry : a European journal
ISSN: 0947-6539
ISSN-E: 1521-3765
ISSN-L: 0947-6539
Volume: 23
Issue: 66
Pages: 16835 - 16842
DOI: 10.1002/chem.201703391
OADOI: https://oadoi.org/10.1002/chem.201703391
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
116 Chemical sciences
Subjects:
Funding: V.R. is grateful for funding by Finnish Cultural Foundation. A.S. thanks the Graduate School of Computational Chemistry and Molecular Spectroscopy (LASKEMO) for funding. V.V.Z. and I.V.K. thank RFBR (grant #16-03-00407) for financial support. V.V.T. acknowledges the Academy of Finland for financial support (grant numbers 289649 and 294027).
Academy of Finland Grant Number: 289649
294027
Detailed Information: 289649 (Academy of Finland Funding decision)
294027 (Academy of Finland Funding decision)
Copyright information: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Published in this repository with the kind permission of the publisher.