%0 conference poster %@ %A Ziegler, S., Fritsch, D., Theis, J. %D 1999 %J European Research Conference: Catalysis in Membrane Reactors – New Frontiers for Catalytic Membrane Reactors and other Membrane Systems %P 304-306 %T Palladium-modified porous polymer membranes as catalysts for the selective hydrogenation of propyne in propene %U %X