Precipitated K-Promoted Co-Mn-Al Mixed Oxides for Direct NO Decomposition: Preparation and Properties.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F19%3A00506324" target="_blank" >RIV/67985858:_____/19:00506324 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27710/19:10242234

Result on the web

<a href="https://www.mdpi.com/2073-4344/9/7/592" target="_blank" >https://www.mdpi.com/2073-4344/9/7/592</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/catal9070592" target="_blank" >10.3390/catal9070592</a>

Result language

angličtina

Original language name

Precipitated K-Promoted Co-Mn-Al Mixed Oxides for Direct NO Decomposition: Preparation and Properties.

Original language description

Direct decomposition of nitric oxide (NO) proceeds over Co-Mn-Al mixed oxides promoted by potassium. In this study, answers to the following questions have been searched: Do the properties of the K-promoted Co-Mn-Al catalysts prepared by different methods differ from each other? The K-precipitated Co-Mn-Al oxide catalysts were prepared by the precipitation of metal nitrates with a solution of K 2 CO 3 /KOH, followed by the washing of the precipitate to different degrees of residual K amounts, and by cthe alcination of the precursors at 500 • C. The properties of the prepared catalysts were compared with those of the best catalyst prepared by the K-impregnation of a wet cake of Co-Mn-Al oxide precursors. The solids were characterized by chemical analysis, DTG, XRD, N 2 physisorption, FTIR, temperature programmed reduction (H 2-TPR), temperature programmed CO 2 desorption (CO 2-TPD), X-ray photoelectron spectrometry (XPS), and the species-resolved thermal alkali desorption method (SR-TAD). The washing of the K-precipitated cake resulted in decreasing the K amount in the solid, which affected the basicity, reducibility, and non-linearly catalytic activity in NO decomposition. The highest activity was found at ca 8 wt.% of K, while that of the best K-impregnated wet cake catalyst was at about 2 wt.% of K. The optimization of the cake washing conditions led to a higher catalytic activity.

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

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OECD FORD branch

20402 - Chemical process engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Catalysts

ISSN

2073-4344

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

7

Country of publishing house

CH - SWITZERLAND

Number of pages

19

Pages from-to

592

UT code for WoS article

000478652600008

EID of the result in the Scopus database

2-s2.0-85070692834