Using a Microchannel Reactor to Optimize the Production of 1-Alkyl-3-Methylimidazolium Chlorides
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Catalysis in Industry
ISSN: 2070-0504
, E-ISSN: 2070-0555
|
| Output data |
Year: 2020,
Volume: 12,
Number: 3,
Pages: 207–215
Pages count
: 9
DOI:
10.1134/S2070050420030071
|
| Tags |
1-alkyl-3-methylimidazolium chloride; BMIMCl; ionic liquid; microchannel flow reactor; quaternization reaction |
| Authors |
Klimenko A.S.
1
,
Andreev D.V.
1
,
Prikhod’ko S.A.
1
,
Gribovskii A.G.
1,2
,
Makarshin L.L.
1
,
Adonin N.Yu.
1,2
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, 630090 Russia
|
|
Funding (1)
|
1
|
Federal Agency for Scientific Organizations
|
0303-2016-0007
|
The possibility of using microchannel flow reactors to obtain the kinetic and technological parameters of the synthesis of 1-butyl-3-methylimidazolium chloride (BMIMCl) ionic liquid is demonstrated for the reaction of 1-methylimidazole (MIm) with 1-chlorobutane with no solvents. BMIMCl is produced with high selectivity and specific output in a microchannel flow reactor at temperatures of 120–180°C a contact time of 2–45 min, and a pressure of 20 bar. A positive result is obtained, due to the laminar profile of the flow and a uniform distribution of the reagents concentration over the microchannel cross section. Studying the kinetics of the process in a microchannel flow reactor reveals a shift of the reaction to the mode of diffusive inhibition at temperatures above 150°C. The kinetic data obtained for BMIMCl synthesis are used to develop ways of producing 1-ethyl-3-methylimidazolium and 1-hexyl-3-methylimidazolium chlorides (EMIMCl and HMIMCl, respectively) under the conditions of a microchannel flow reactor. The approach proposed in this work is of interest in developing flow and periodic facilities for the low-tonnage production of dialkylimidazolium, ammonium, and pyridinium salts via quaternization of the corresponding alkyl chlorides and nitrogen-containing bases.