Abstract
The economic advantages of switching to a propane feedstock in the production of acrylic acid have been a motivating force for extensive research studies focused on developing alkane partial oxidation catalysts. While catalyst systems containing MoVTeNb oxides have received considerable attention, the activity of these catalysts has not been systematically characterized over a wide domain of working conditions (different gas compositions, temperatures, etc.) and a detailed kinetic model of the propane-to-acrylic-acid reaction has not been developed yet. Extensive steady-state studies (conversion/product yields vs temperature at different feed compositions and contact times) and non-steady-state studies (pulse-response temporal analysis of products (TAP) experiments) of the propane-to-acrylic-acid reaction were performed using a TAP-2 reactor system under normal and vacuum conditions. TAP pump−probe experiments indicate that there is an optimum time for the introduction of water and that water reacts with ...
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