Figure 6.

Catalyst activity, expressed in yield or conversion for the gas‐phase ketonization of propionic acid over anatase, rutile, and brookite at different reaction temperatures, normalized by surface area as a function of time on stream.

Catalyst activity, expressed in yield or conversion for the gas‐phase ketonization of propionic acid over anatase, rutile, and brookite at different reaction temperatures, normalized by surface area as a function of time on stream.