Contains the keyword cooperative catalysis

Kandel K, Althaus SM, Peeraphatdit C, Kobayashi T, Trewyn BG, Pruski M, et al. Substrate inhibition in the heterogeneous catalyzed aldol condensation: A mechanistic study of supported organocatalysts. J Catal. 2012;291:63-8. Abstract

Huang YL, Xu S, Lin VS. Bifunctionalized Mesoporous Materials with Site-Separated Bronsted Acids and Bases: Catalyst for a Two-Step Reaction Sequence. Angew Chem-Int Edit. 2011;50:661-4.