What is HybSi and where to use?

HybSi® is the trade name of a recently developed nanoporous membrane system with an unprecedented high stability under both hydrothermal and acidic conditions. Typical applications of HybSi® membranes are pervaporation and vapor permeation. Characteristic of the membrane material is that it combines organic and ceramic units that are connected on an atomic level. By doing so the best of both worlds are combined in this true hybrid material. More details are provided in technology.


Using the hybrid silica membrane in dehydration of organic solvents and mixtures important savings in both CAPEX and OPEX are possible, see the table below. Important fields of application are e.g. the dehydration of alcohols, ketones, aldehydes, aprotic solvents, organic acids, or to increase the productivity by water removal in reactive systems like esterification reactions.


Artist impression of HybSi® membranes

EtOH dehydration: distillation+vapour permeation+molecular sieving

Possible costs savings in some processes

Latest news: acetic acid dehydration - process and energy improvements by HybSi membranes

Interview with Frans Velterop, managing director of Pervatech BV on 12 June 2015 in a special issue of 'Impact' (in Dutch) >>

ECN has developed a HybSi membrane with an increased acid stability. With this membrane the dehydration of acetic acid is possible. Download the newsflash >> or download the poster >>

Upcoming events

HybSi®  membranes will be presented at the following events:

Patent Portfolio

The HybSi® membrane and the necessary sealing and module technology are covered by a number of ECN patents. ECN is looking for interested parties to take a license on its technology and broad patent portfolio. Potentially interested parties include companies that are interested in membrane fabrication, or that are interested in marketing full separation equipment that contain HybSi® membrane technology, or that are interested in the final utilization of it. We can provide a detailed technology transfer and aim for a joined effort in the further scale-up and market development of HybSi® membranes.


Dr.Ir. Jaap Vente

Manager Membrane Technology, ECN Biomass & Energy Efficiency

Energy research Centre of the Netherlands     

Visiting address: Westerduinweg 3, 1755 LE Petten,  The Netherlands

Postal address: P.O. Box 1, 1755 ZG Petten, The Netherlands

E-mail: info@!spam-protected!hybsi.com

Tel: +31 (0) 224 56 49 16