Abstract
Temperature-programmed reaction (TPR) is shown to be a practical method for determining reaction-rate expressions and kinetics parameters for liquid-phase chemical reactions. By measuring reaction extent during a temperature rise, information normally obtained from a series of isothermal kinetics experiments can be found in a single TPR test. Using nonlinear least-squares regression eliminates the need for a constant temperature-rise rate, and enables reactions with significant heat effects to be tested. Use of experimental pressures above atmospheric can extend TPR temperature ranges so that experiments can be carried out within a reasonable time for most reactions. Simulations of TPR with random measurement error are used to assess the technique's accuracy and to identify the best values of operating parameters. Comparing TPR with isothermal methods shows the latter may be slightly more accurate for the same number of data points, but TPR is far faster and experimentally simpler, and more data points can be taken in a given time period. Two TPR experiments measuring alkaline ethyl-acetate hydrolysis show the technique's applicability.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call