Bulk- Oil- and Petro Chemistry - DuraMem® and PuraMem® membranes for organic solvent nanofiltration - OSN

Where our OSN membranes can be used?

Recover and re-use of catalysts

Homogeneous catalysts are very efficient but expensive materials that are difficult to separate in an active form with conventional separation technology. They are generally large molecules that are well retained by OSN membranes, which allows them to be recovered and re-used in a production process.

Homogeneous catalysts have the potential to be used in many chemical processes. However, they are complex chemical structures, containing metals such as the platinum group species, which makes them very expensive to produce. In most cases, unless the catalyst can be recovered and re-used, the process economics do not favour the use of homogeneous catalysts and consequently homogeneous catalysts are not as widely used in industry as they potentially could be. Homogeneous catalysts are usually significantly larger than the reactants/products from the chemistry they catalyse and thus they are quite amenable to separation with OSN membranes. In fact, near quantitative recovery of homogeneous catalysts can be achieved with OSN membranes. Recovery of the intact catalyst has a very positive impact on the process economics. Evonik's range of DuraMem® and PuraMem® membranes can be used for homogeneous catalyst recovery.