Our technology is built on, and underpinned by, continuous research and development.

research content.jpg Advanced ion exchange (AIX) research and development is carried out at Johnson Matthey's world class R&D facilities in Sonning Common and Chilton in the UK, a centre in Finland and at the new R&D centre in Singapore. These centres have state of the art facilities for the elemental, structural and compositional analysis of complex feeds and solids, material synthesis, characterisation and testing of advanced materials in model and real world conditions.

Our R&D approach is focussed on 3 main areas:

Research on the design of AIX substrates and materials focusses on the physical properties of AIX materials that give improvements in adsorption kinetics and ion loading. AIX R&D has developed materials that have much faster kinetics and can by-pass possible diffusion limitations by attaching functionality close to the surface of the AIX substrate using patented technologies which both make the groups more available for adsorption, but also give the high functional group loading.


To achieve selectivity for the adsorption of specific ions in complex mixtures, and to the improvement of existing IX functionality to increase effective ion loading capacity, our R&D is targeted at understanding and developing the required functionality. The JM approach is to develop ion specific functionality, based on a detailed understanding of ion speciation and the interaction of the target ion with the adsorbing functional group. The ion specific groups reduce or eliminate the effect of competing ions and hence increase ion loading.

Process improvement

Process research and development concentrates on modelling AIX processes, integrating material design, process chemistry, adsorption kinetics and fundamental properties of our materials with mass transport and hydrodynamics. This research is targeted at improving the effectiveness of adsorption and desorption processes, where applicable.