Cu/SiO2, cogelled xerogel catalysts were synthesized by cogelation of tetraethoxysilane (TEOS) and chelates of Cu with 3-(2-aminoethylamino)-propyltrimethoxysilane (EDAS). The resulting catalysts are composed of metallic crystallites with a diameter of about 3 nm located inside microporous silica particles and larger metallic particles with a diameter of 8-30 nm located outside silica network. Cu/SiO2, catalysts were tested for 2-butanol dehydrogenation. This reaction over Cu/SiO2 cogelled xerogel catalysts is a structure-sensitive reaction: large metallic particles located outside silica particles are responsible for the dehydrogenation reaction, while small metallic particles located inside silica particles do not participate to the reaction. (C) 2007 Elsevier B.V. All rights reserved.
Lambert, S., Cellier, C., Ferauche, F., Gaigneaux, E., Heinrichs, B., & Pirard, J.-P. (2007). On the structure-sensitivity of 2-butanol dehydrogenation over CU/SiO2 cogelled xerogel catalysts. Catalysis Communications, 8(12), 2032-2036. https://doi.org/10.1016/j.catcom.2007.04.004 (Original work published 2007)