A constant rate is evidence for a specific acid catalyst.

Aromatic rings are acetylated, usually in the presence of an acid catalyst.

However, it is now known that Glu-461 is an acid catalyst.

Such reactions are usually conducted in the presence of an acid catalyst or UV light.

Comes in two parts - a resin and an acid catalyst.

The acid catalyst is added right before application in a set ratio determined by the manufacturer.

So it's usually made by stoichiometrically adding water to ethylene over an acid catalyst.

The choice of acid catalyst is very important.

Methanesulfonic acid can be used as the acid catalyst in this reaction.

A problem with the Ritter reaction is the necessity of an extremely strong acid catalyst in order to produce the carbocation.