modified Arrhenius equation

This is an extension of the simple Arrhenius equation in which the pre-exponential factor is proportional to $T n$ where $T$ is the temperature and $n$ a constant:

$k = B T n exp − E a R T$

$B$ is a temperature-independent constant.

Source:

PAC, 1996, 68, 149 (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 174