Abstract
For a batch reaction, the conditions within a reactor (the concentrations of materials and products) change with time. In contrast, for a flow reaction, the conditions within a reactor remain constant with time, but the conditions differ at different locations within the reactor. The reaction time for a flow reaction can be controlled by controlling the residence time in the flow reactor. Quench-flow method, in which a quenching reagent is added at the exit of the reactor to quantify the products with the residence time being varied, is effective for analyzing flow reactions. In a reaction involving an intermediate that easily decompose, a product can be obtained in a high yield only when a quencher is added in a time range during which a sufficient amount of the intermediate is produced and most of the intermediate is yet to decompose. Although a batch reactor can be used if the reaction is slow, a flow reactor is needed for a fast reaction (high-resolution reaction time control). Because the reaction rate depends on temperature, the temperature–residence time map, which can be obtained by the quench-flow method at different temperatures, is effective in optimizing the flow reaction conditions to obtain the product in a high yield.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
S. Suga, M. Okajima, K. Fujiwara, J. Yoshida, J. Am. Chem. Soc. 123, 7941 (2001)
T.E. Barman, S.R.W. Bellamy, H. Gutfreund, S.E. Halford, C. Lionne, Cell. Mol. Life Sci. 63, 2571 (2006)
W.P. Bula, W. Verboom, D.N. Reinhoudt, J.G.E. Gardeniers, Lab. Chip. 7, 1717 (2007)
A. Nagaki, E. Takizawa, J. Yoshida, J. Am. Chem. Soc. 131, 1654, 3787 (2009)
A. Nagaki, E. Takizawa. J. Yoshida, Chem. Eur. J. 16, 14149 (2010)
T. Satoh, Chem. Rev. 96, 3303 (1996)
G. Boche, J.C.W. Lohrenz, Chem. Rev. 101, 697 (2001)
S. Florio, Tetrahedron 59, 9693 (2003)
V. Capriati, R. Favia, S. Florio, R. Luisi, ARKIVOC, xiv, 77 (2003)
D.M. Hodgson, C.D. Bray, P.G. Humphreys, Synlett 1, 0001 (2006)
D.M. Hodgson, P.G. Humphreys, S.P. Hughes, Pure Appl. Chem. 79, 269 (2007)
V. Capriati, S. Florio, R. Luisi, Chem. Rev. 108, 1918 (2008)
J. Yoshida, Chem. Rec. 10, 332 (2010)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2015 The Author(s)
About this chapter
Cite this chapter
Yoshida, Ji. (2015). Controlling Residence Time. In: Basics of Flow Microreactor Synthesis. SpringerBriefs in Molecular Science. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55513-1_2
Download citation
DOI: https://doi.org/10.1007/978-4-431-55513-1_2
Published:
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-55512-4
Online ISBN: 978-4-431-55513-1
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)