Abstract: A new method, which correlates rate constants of chemical reactions and density or pressure
in supercritical fluids, was developed. Based on the transition state theory and
thermodynamic principles, the rate constant can be reasonably correlated with the density
of the supercritical fluid, and a correlation equation was obtained.Coupled with the
equation of state (EOS) of a supercritical solvent, the effect of pressure on reaction rate
constant could be represented. Two typical systems were used to test this method. The
result indicates that this method is suitable for dilute supercritical fluid solutions.

Key words: supercritical, reaction, rate constant, density, pressure

摘要： A new method, which correlates rate constants of chemical reactions and density or pressure
in supercritical fluids, was developed. Based on the transition state theory and
thermodynamic principles, the rate constant can be reasonably correlated with the density
of the supercritical fluid, and a correlation equation was obtained.Coupled with the
equation of state (EOS) of a supercritical solvent, the effect of pressure on reaction rate
constant could be represented. Two typical systems were used to test this method. The
result indicates that this method is suitable for dilute supercritical fluid solutions.

关键词: supercritical;reaction;rate constant;density;pressure