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Optimization of wash-coating slurries as catalyst carrier for screen printing into microstructured reactors

: Pennemann, Helmut; Dobra, Matthias; Wichert, Martin; Kolb, Gunther


Chemical Engineering and Technology 36 (2013), Nr.6, S.1033-1041
ISSN: 0930-7516
ISSN: 1521-4125
Fraunhofer ICT-IMM ()
catalyst; coating; microreactor; screen printing

A screen printing procedure was developed to deposit catalyst coatings into microchannels by wash-coating through a low-cost technique suited for mass production. The composition of the suspension was optimized regarding the choice of solvent, binder, and additive so as to achieve both optimum rheological properties for screen printing and catalyst adhesion. The feasibility of screen printing catalysts into arrays of plates carrying microchannels was demonstrated and the long-term durability of the catalytic performance of the screen-printed coatings was proven experimentally.