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Microchannel Reactor for Intensifying Oxidation of Methanol to Formaldehyde over Fe-Mo Catalyst Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212
Output data Year: 2017, Volume: 308, Pages: 135-141 Pages count : 7 DOI: 10.1016/j.cej.2016.09.058
Tags Catalyst, Catalytic multichannel reactor, Fe-Mo catalyst, Formaldehyde, Methanol oxidation, Process intensification
Authors Gribovskii A.G. 1,2 , Ovchinnikova E.V. 1 , Vernikovskaya N.V. 1,2 , Andreev D.V. 1 , Chumachenko V.A. 1 , Makarshin L.L. 1
Affiliations
1 Boreskov Institute of Catalysis, Pr. Akad. Lavrentieva, 5, 630090 Novosibirsk, Russia
2 Novosibirsk State University, ul. Pirogova 2, 630090 Novosibirsk, Russia

Funding (1)

1 Russian Foundation for Basic Research 15-08-02963

Abstract: The paper deals with catalytic oxidation of methanol to formaldehyde in a microchannel reactor (MCR) in view of the process intensification. Every channel in the experimental MCR was 1 mm in diameter, 10 mm in height and was filled with an industrial Fe-Mo catalyst ground to a fraction of 0.15–0.25 mm. Methanol concentration in the feed mixture was 6.5 and 12 mol%, oxygen to methanol molar ratio was 1.5, the temperature was in the range 240–360 °C. Safe processing of the reaction in MCR at methanol concentration as high as 12 mol% makes it possible to reach approximately a 10-fold increase in the specific formaldehyde productivity per unit volume of the catalyst even within the explosive range of oxygen-methanol mixtures. Numerical simulation of the process by use of a continuum model revealed its sufficient consistency with the experimental results. It was shown that methanol conversion decreased by ∼12% after operation for 100 h at 300 °C and 12 mol% of methanol. In contrast, at the same conditions but at standard 6.5 mol% of methanol, the decrease in the conversion did not exceed 3%. The use of MCR for highly exothermic reactions has high potential due to extremely high rates of heat and mass transfer, provided that the catalyst used has stable activity of fine particles during on-stream operation.
Cite: Gribovskii A.G. , Ovchinnikova E.V. , Vernikovskaya N.V. , Andreev D.V. , Chumachenko V.A. , Makarshin L.L.
Microchannel Reactor for Intensifying Oxidation of Methanol to Formaldehyde over Fe-Mo Catalyst
Chemical Engineering Journal. 2017. V.308. P.135-141. DOI: 10.1016/j.cej.2016.09.058 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Mar 15, 2016
Accepted: Sep 12, 2016
Published online: Sep 12, 2016
Published print: Jan 1, 2017
Identifiers:
publication_identifier.wos_identifier_type WOS:000389088000014
publication_identifier.scopus_identifier_type 2-s2.0-84989819502
publication_identifier.rinz_identifier_type 28249552
publication_identifier.accession_number_identifier_type 2016:1545952
publication_identifier.chemical_accession_number_identifier_type 165:442418
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