Over- and low-exchanged Co/BEA catalysts: General characterization and catalytic behaviour in ethane ammoxidation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912573" target="_blank" >RIV/00216275:25310/18:39912573 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.cattod.2017.08.027" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2017.08.027</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2017.08.027" target="_blank" >10.1016/j.cattod.2017.08.027</a>

Result language

angličtina

Original language name

Over- and low-exchanged Co/BEA catalysts: General characterization and catalytic behaviour in ethane ammoxidation

Original language description

Ethane ammoxidation into acetonitrile was successfully catalyzed between 380 and 450 degrees C over Co/BEA solids issued from solid-state ion exchange with different metal loads. During the preparation, in the presence of NH4+-Beta zeolite (Si/Al = 12.5), CoCl2 precursor decomposes under helium stream without evaporation, leading to the stabilization of bare Co2+ at the exchange cationic sites as revealed by spectroscopic tools. However, at 4.13 and 5.63 wt.% of Co (Co/Al molar ratio equal to 0.75 and 1, respectively), the corresponding solids stabilized, besides bare beta-type Co2+ ions, Co oxo [Co(III)O](+) species, revealed by H-2-TPR. These species exhibit highest catalytic activity on the basis of TOF calculation and play a key role in ethane ammoxidation into acetonitrile at low temperature (380 degrees C). Nevertheless, the excess of cobalt is transformed into Co3O4 oxide (as revealed by XRD and TPR experiments) which catalyzes the hydrocarbons combustion into CO2.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Intelligent design of nanoporous adsorbents and catalysts</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Catalysis Today

ISSN

0920-5861

e-ISSN

—

Volume of the periodical

304

Issue of the periodical within the volume

April

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

103-111

UT code for WoS article

000425179000014

EID of the result in the Scopus database

2-s2.0-85028382518