Subnanometer cobalt oxide clusters as selective low temperature oxidative dehydrogenation catalysts

Nature Communications
Sungsik LeeStefan Vajda

Abstract

The discovery of more efficient, economical, and selective catalysts for oxidative dehydrogenation is of immense economic importance. However, the temperatures required for this reaction are typically high, often exceeding 400 °C. Herein, we report the discovery of subnanometer sized cobalt oxide clusters for oxidative dehydrogenation of cyclohexane that are active at lower temperatures than reported catalysts, while they can also eliminate the combustion channel. These results found for the two cluster sizes suggest other subnanometer size (CoO)x clusters will also be active at low temperatures. The high activity of the cobalt clusters can be understood on the basis of density functional studies that reveal highly active under-coordinated cobalt atoms in the clusters and show that the oxidized nature of the clusters substantially decreases the binding energy of the cyclohexene species which desorb from the cluster at low temperature.

References

Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Jun 22, 2005·Journal of Synchrotron Radiation·B Ravel, M Newville
Jul 20, 2010·Micron : the International Research and Review Journal for Microscopy·Eli Stavitski, Frank M F de Groot
Jul 23, 2011·Nature Chemistry·Botao QiaoTao Zhang
Mar 11, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Hidekazu IkenoIsao Tanaka
Jul 23, 2013·Nature Materials·Markus NesselbergerMatthias Arenz
Jul 4, 2015·Nature Nanotechnology·Eric C Tyo, Stefan Vajda
Apr 21, 2011·The Journal of Physical Chemistry Letters·Vasiliki PapaefthimiouSpiros Zafeiratos
Dec 15, 2016·Chemical Reviews·Zhixun LuoShiv N Khanna
Aug 2, 2017·Journal of the American Chemical Society·Mai-Anh HaAnastassia N Alexandrova
Sep 8, 2017·The Journal of Physical Chemistry. B·Akila C ThenuwaraDaniel R Strongin
Dec 16, 2017·Journal of the American Chemical Society·Xue-Lu MaJun Li
Mar 24, 2018·The Journal of Chemical Physics·Avik HalderStefan Vajda

❮ Previous
Next ❯

Citations

Jun 26, 2020·Physical Chemistry Chemical Physics : PCCP·R MolaviM H Sheikhi
Nov 20, 2020·Nature Communications·Hongpan RongYadong Li
Jul 10, 2021·The Journal of Chemical Physics·Nassar DoudinZdenek Dohnálek
Sep 26, 2019·The Journal of Physical Chemistry Letters·Yaroslava LykhachJörg Libuda
Oct 1, 2020·Inorganic Chemistry·Jaruwan AmtawongT Don Tilley
Jan 22, 2022·Journal of the American Chemical Society·Jaruwan AmtawongT Don Tilley

❮ Previous
Next ❯

Methods Mentioned

BETA
chip
X-ray
transmission electron microscopy

Software Mentioned

CTM4XAS vs3
Vienna Ab initio Simulation Package
ARTEMIS
ATHENA
IFEFFIT

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.