Publication Details (including relevant citation information):
Novakovic, K.; Grosjean, C.; Scott, S. K.; Whiting, A.; Willis, M. J.; Wright, A. R. Chem. Phys. Lett., 2007, 435, 142‐147
This Letter reports an experimental study which achieves reproducible oscillations in both pH and heat output (Qr) during a palladium-
catalysed phenylacetylene oxidative carbonylation reaction in an homogeneous catalytic system (PdI2–KI–Air–NaOAc in methanol
solution). Experiments were performed in an HEL SIMULAR reaction calorimeter with precise control of temperature and gas
flow rates. Under certain experimental conditions a second set of oscillations was observed. Oscillations in Qr were exothermic with
no corresponding endotherm. Total energy released during oscillations followed a staircase function with a maximum of 600 J/oscillation.
Heat release was in phase with pH fall, and decreased as pH increased.
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