Research output: Contribution to journal › Article › peer-review
Efficient Catalytic Microreactors with Atomic-Layer-Deposited Platinum Nanoparticles on Oxide Support. / Rontu, Ville; Selent, Anne; Zhivonitko, Vladimir V. et al.
In: Chemistry - A European Journal, Vol. 23, No. 66, 27.11.2017, p. 16835-16842.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Efficient Catalytic Microreactors with Atomic-Layer-Deposited Platinum Nanoparticles on Oxide Support
AU - Rontu, Ville
AU - Selent, Anne
AU - Zhivonitko, Vladimir V.
AU - Scotti, Gianmario
AU - Koptyug, Igor V.
AU - Telkki, Ville Veikko
AU - Franssila, Sami
N1 - Publisher Copyright: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/11/27
Y1 - 2017/11/27
N2 - 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.
AB - 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.
KW - atomic layer deposition
KW - flow chemistry
KW - hydrogenation
KW - nanoparticles
KW - remote detection nmr
KW - HETEROGENEOUS HYDROGENATION
KW - HYDROGEN-INDUCED POLARIZATION
KW - FLOW
KW - PAIRWISE
KW - HIGH-RESOLUTION NMR
KW - ON-A-CHIP
KW - PROPENE HYDROGENATION
KW - MICROMIXER
KW - SPECTROSCOPY
KW - PARAHYDROGEN-INDUCED POLARIZATION
UR - http://www.scopus.com/inward/record.url?scp=85033434421&partnerID=8YFLogxK
U2 - 10.1002/chem.201703391
DO - 10.1002/chem.201703391
M3 - Article
C2 - 28902425
AN - SCOPUS:85033434421
VL - 23
SP - 16835
EP - 16842
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 66
ER -
ID: 9699055