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Title: Accelerated Chemical Reactions and Organic Synthesis in Leidenfrost Droplets

Journal Article · · Angewandte Chemie
 [1];  [1];  [2];  [1]
  1. Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN USA
  2. Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN USA, Laboratory of Neuroscience University of Lille 1 France

Abstract Leidenfrost levitated droplets can be used to accelerate chemical reactions in processes that appear similar to reaction acceleration in charged microdroplets produced by electrospray ionization. Reaction acceleration in Leidenfrost droplets is demonstrated for a base‐catalyzed Claisen–Schmidt condensation, hydrazone formation from precharged and neutral ketones, and for the Katritzky pyrylium into pyridinium conversion under various reaction conditions. Comparisons with bulk reactions gave intermediate acceleration factors (2–50). By keeping the volume of the Leidenfrost droplets constant, it was shown that interfacial effects contribute to acceleration; this was confirmed by decreased reaction rates in the presence of a surfactant. The ability to multiplex Leidenfrost microreactors, to extract product into an immiscible solvent during reaction, and to use Leidenfrost droplets as reaction vessels to synthesize milligram quantities of product is also demonstrated.

Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-06ER15807
OSTI ID:
1400996
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 35 Vol. 128; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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