Early Studies of Multicomponent Catalysts

Combinatorial Chemistry in Heterogeneous Catalysis: A New Scientific Approach or “the King's New Clothes”?

“…Its application in heterogeneous catalysis is, however, very reminiscent of the strategy described 50 years ago by A. Mittasch. [20] This finding substantiates the doubts expressed in the title. Combinatorial chemistry is at best a modern variation of the Mittasch method which can never replace the efforts necessary for the rational approach.…”

Graphitic Nanofilaments as Novel Support of Ru–Ba Catalysts for Ammonia Synthesis

“…GNFs were synthesized by CH 4 decomposition over a nickel-based catalyst, then the catalyst was removed by dissolution typically in aqueous solution of HNO 3 . The RuBa/GNF and Ru-Ba/AC catalysts were prepared by using a two-step impregnation method (18).…”

“…The RuBa/GNF and Ru-Ba/AC catalysts were prepared by using a two-step impregnation method (18). Namely, The Ru precursor salt, RuCl 3 were added to form slurry. The sample was dried overnight at 110…”

Heterogeneous Catalysis under pressure -In-situneutron diffraction under industrial conditions

“…The specific BET-surface area of the catalyst is around 10 m 2 g −1 , while the mean particle size of the wuestite/magnetiteprecursor is roughly 10 µm. The catalytically-active form is called "ammonia iron" [8], which is produced from the fused iron-oxides by a complex thermal treatment in a reducing reactant gas-feed. Studies have shown [9] that the precursor material exhibits a disk-like internal microstructure, leading to long-term stable aggregates of α-iron-platelets separated by oxide spacers, which are favorable for the conversion of di-nitrogen.…”