Oxidative dehydrogenation of cyclohexene on atomically precise subnanometer Cu4-nPdn (0 <= n <= 4) tetramer clusters: the effect of cluster composition and support on performance

Jašík, Juraj; Valtera, Stanislav; Vaidulych, Mykhailo; Bunian, M.; Lei, Y.; Halder, A.; Tarábková, Hana; Jindra, Martin; Kavan, Ladislav; Frank, Otakar; Bartling, S.; Vajda, Štefan

doi:https://dx.doi.org/10.1039/d2fd00108j

Number of the records: 1

Oxidative dehydrogenation of cyclohexene on atomically precise subnanometer Cu4-nPdn (0 <= n <= 4) tetramer clusters: the effect of cluster composition and support on performance

1.

SYSNO ASEP	0562674
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Oxidative dehydrogenation of cyclohexene on atomically precise subnanometer Cu4-nPdn (0 <= n <= 4) tetramer clusters: the effect of cluster composition and support on performance
Author(s)	Jašík, Juraj (UFCH-W)_{ORCID, RID} Valtera, Stanislav (UFCH-W)_{ORCID, RID} Vaidulych, Mykhailo (UFCH-W)_{ORCID, RID} Bunian, M. (US) Lei, Y. (US) Halder, A. (US) Tarábková, Hana (UFCH-W)_{RID, ORCID} Jindra, Martin (UFCH-W)_ORCID Kavan, Ladislav (UFCH-W)_{RID, ORCID} Frank, Otakar (UFCH-W)_{RID, ORCID} Bartling, S. (DE) Vajda, Štefan (UFCH-W)_{RID, ORCID}
Source Title	Faraday Discussions. - : Royal Society of Chemistry - ISSN 1359-6640 Roč. 242, JAN 2023 (2023), s. 70-93
Number of pages	24 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	PALLADIUM CLUSTERS ; PARTICLE-SIZE ; STRUCTURE SENSITIVITY
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	EF16_026/0008382 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	UFCH-W - RVO:61388955
UT WOS	000865531400001
EID SCOPUS	85141075143
DOI	10.1039/d2fd00108j
Annotation	The pronounced effects of the composition of four-atom monometallic Cu and Pd and bimetallic CuPd clusters and the support on the catalytic activity and selectivity in the oxidative dehydrogenation of cyclohexene are reported. The ultra-nanocrystalline diamond supported clusters are highly active and dominantly produce benzene, some of the mixed clusters also produce cyclohexadiene, which are all clusters with a much suppressed combustion channel. The also highly active TiO2-supported tetramers solely produce benzene, without any combustion to CO2. The selectivity of the zirconia-supported mixed CuPd clusters and the monometallic Cu cluster is entirely different, though they are less active in comparison to clusters with other supports, these clusters produce significant fractions of cyclohexadiene, with their selectivity towards cyclohexadiene gradually increasing with the increasing number of copper atoms in the cluster, reaching about 50% for Cu3Pd1. The zirconia-supported copper tetramer stands out from among all the other tetramers in this reaction, with a selectivity towards cyclohexadiene of 70%, which far exceeds those of all the other cluster-support combinations. The findings from this study indicate a positive effect of copper on the stability of the mixed tetramers and potential new ways of fine-tuning catalyst performance by controlling the composition of the active site and via cluster-support interactions in complex oxidative reactions under the suppression of the undesired combustion of the feed.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2024
Electronic address	https://hdl.handle.net/11104/0334928

Number of the records: 1