skip to main content

SciTech ConnectSciTech Connect

Title: Single atom catalysts on amorphous supports: A quenched disorder perspective

Phenomenological models that invoke catalyst sites with different adsorption constants and rate constants are well-established, but computational and experimental methods are just beginning to provide atomically resolved details about amorphous surfaces and their active sites. This letter develops a statistical transformation from the quenched disorder distribution of site structures to the distribution of activation energies for sites on amorphous supports. We show that the overall kinetics are highly sensitive to the precise nature of the low energy tail in the activation energy distribution. Our analysis motivates further development of systematic methods to identify and understand the most reactive members of the active site distribution.
Authors:
;  [1] ;  [2]
  1. Department of Chemical Engineering, University of California, Santa Barbara, California 93106 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22415516
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACTIVATION ENERGY; ADSORPTION; AMORPHOUS STATE; ATOMS; CATALYSTS; PHASE TRANSFORMATIONS; REACTION KINETICS; SURFACES