TY - JOUR

T1 - Detecting phase transitions in supercritical mixtures

T2 - an enabling tool for greener chemical reactions

AU - Ke, Jie

AU - Sanchez-Vicente, Yolanda

AU - Akien, Geoffrey R.

AU - Novitskiy, Alexander A.

AU - Comak, Gurbuz

AU - Bagratashvili, Victor N.

AU - George, Michael W.

AU - Poliakoff, Martyn

PY - 2010/10/8

Y1 - 2010/10/8

N2 - Detecting phase transitions in high-pressure CO(2) and supercritical fluids was first attempted in the nineteenth century. By contrast, Green Chemistry, the design and implementation of cleaner methods of manufacturing and processing chemicals, is barely 20 years old. Now, the use of CO(2) as an environmentally more acceptable replacement for traditional solvents for greener chemical reactions is creating the need for new, more rapid methods for elucidating high-pressure phase behaviour. This paper describes the advantages and limitations of a number of approaches, developed in Nottingham, to meet this need, including acoustic measurements, shear-mode quartz sensors, the fibre-optic reflectometer, the use of holey fibres, attenuated total reflectance infrared spectroscopy and pressure drop measurements.

AB - Detecting phase transitions in high-pressure CO(2) and supercritical fluids was first attempted in the nineteenth century. By contrast, Green Chemistry, the design and implementation of cleaner methods of manufacturing and processing chemicals, is barely 20 years old. Now, the use of CO(2) as an environmentally more acceptable replacement for traditional solvents for greener chemical reactions is creating the need for new, more rapid methods for elucidating high-pressure phase behaviour. This paper describes the advantages and limitations of a number of approaches, developed in Nottingham, to meet this need, including acoustic measurements, shear-mode quartz sensors, the fibre-optic reflectometer, the use of holey fibres, attenuated total reflectance infrared spectroscopy and pressure drop measurements.

KW - phase equilibrium

KW - sensors

KW - supercritical fluids

KW - Green Chemistry

KW - high pressure

KW - critical points

KW - MODE PIEZOELECTRIC SENSOR

KW - CRITICAL-POINT CHANGE

KW - CARBON-DIOXIDE

KW - ACOUSTIC DETERMINATION

KW - FLUID MIXTURES

KW - HIGH-PRESSURES

KW - CO2

KW - EQUILIBRIA

KW - HYDROFORMYLATION

KW - TEMPERATURES

U2 - 10.1098/rspa.2010.0267

DO - 10.1098/rspa.2010.0267

M3 - Literature review

VL - 466

SP - 2799

EP - 2818

JO - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

JF - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

SN - 1364-5021

IS - 2122

ER -