Study of the deterioration of acid resins in cyclic duty

A systematic loss in capacity and change in kinetics is reported in both case studies and it is postulated that the reason for this is the loss of active sites within the resin matrix. The significance of this observation is that standard tests done for a new resin application could significantly overestimate the commercial performance of the resin concerned. This paper proposes a method in which resin might be studied prior to inclusion in a particular process, with the objective of determining its effective life span.