Green chemical processes with supercritical fluids: Properties, materials, separations and energy

Hiroshi Machida, Masafumi Takesue, Richard L. Smith

研究成果: Article

91 引用 (Scopus)

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In this work, an overview of the properties of supercritical fluids is given on using water and carbon dioxide for developing green chemical processes. Present industrial processes and emerging technologies that use supercritical fluids are highlighted. Supercritical fluids are being used in transcritical cycles for heat transfer due to their favorable thermophysical properties and their environmental compatibility. Supercritical water is being proposed as a reaction solvent for zinc silicate industrial phosphors, since it allows production of luminescent materials at low temperatures (400 °C) and with less energy than industrial solid-state methods that require high temperatures (1200 °C). Supercritical CO 2-ionic liquid systems have much potential as biphasic systems for reactions and separations, however, when used for chiral separations, the selectivity of these systems is not well understood yet. The use of supercritical CO 2 for viscosity reduction in ionic liquid reaction systems seems to be a favorable research area with conversion of d-fructose to 5-hydroxymethylfurfural in high yields (>90%) being an example. Systems to convert biomass to energy by direct oxidation in supercritical water are under development. Many opportunities exist for developing green chemical processes with supercritical fluids.

元の言語English
ページ(範囲)2-15
ページ数14
ジャーナルJournal of Supercritical Fluids
60
DOI
出版物ステータスPublished - 2011 12 1

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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