Performance Improvement of Nanocatalysts by Promoter-Induced Defects in the Support Material: Methanol Synthesis over Cu/ZnO:Al
Citations Over TimeTop 10% of 2013 papers
Abstract
Addition of small amounts of promoters to solid catalysts can cause pronounced improvement in the catalytic properties. For the complex catalysts employed in industrial processes, the fate and mode of operation of promoters is often not well understood, which hinders a more rational optimization of these important materials. Herein we show for the example of the industrial Cu/ZnO/Al2O3 catalyst for methanol synthesis how structure-performance relationships can deliver such insights and shed light on the role of the Al promoter in this system. We were able to discriminate a structural effect and an electronic promoting effect, identify the relevant Al species as a dopant in ZnO, and determine the optimal Al content of improved Cu/ZnO:Al catalysts. By analogy to Ga- and Cr-promoted samples, we conclude that there is a general effect of promoter-induced defects in ZnO on the metal-support interactions and propose the relevance of this promotion mechanism for other metal/oxide catalysts also.
Related Papers
- → Effect of the Ag+ in Ag25@ZnO nanocatalysts for the 4-nitrophenol reduction reactions(2023)7 cited
- → Recent Developments in Nanostructured Palladium and Other Metal Catalysts for Organic Transformation(2019)36 cited
- → Synthesis Characterization and Applications of Colloidal Supported Metal Nanoparticles(2013)2 cited
- → ENGINEERING MONO‐ AND MULTIFUNCTIONAL NANOCATALYSTS FOR CASCADE REACTIONS(2013)
- Recent progress on core-shell nanocatalysts(2015)