Thermodynamic cartography and structure/property mapping of commercial platinum catalysts

Amanda Barnard, Lan-Yun Chang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The development of the next generation of nanosized heterogeneous catalysts, requires, precise control of the size, shape, and structure of individual components in a variety of chemical environments. Recent reports show that the density of catalytically active defects on Pt nanoparticles is intrinsically linked to performance, such as edges, corners, steps; and kinks, Which may be introduced postsynthesis. To optimize the synthesis of nanoparticles decorated by these defects and to understand the structural stability, of the final product, multiscale: thermodynamic modeling has been used to predict the size and temperature dependence of these steps and to show how this directly relates to catalytic reactivity. The results show that relatively modest annealing can promote the formations of surface steps and kinks and can more than double the reactivity of particles at industrially relevant sizes.
Original languageEnglish
Pages (from-to)76 - 81
Number of pages6
JournalACS Catalysis
Volume1
Issue number2
DOIs
Publication statusPublished - 2011

Cite this

Barnard, Amanda ; Chang, Lan-Yun. / Thermodynamic cartography and structure/property mapping of commercial platinum catalysts. In: ACS Catalysis. 2011 ; Vol. 1, No. 2. pp. 76 - 81.
@article{31c29d9d0ce4417fa2d4fc11038a196c,
title = "Thermodynamic cartography and structure/property mapping of commercial platinum catalysts",
abstract = "The development of the next generation of nanosized heterogeneous catalysts, requires, precise control of the size, shape, and structure of individual components in a variety of chemical environments. Recent reports show that the density of catalytically active defects on Pt nanoparticles is intrinsically linked to performance, such as edges, corners, steps; and kinks, Which may be introduced postsynthesis. To optimize the synthesis of nanoparticles decorated by these defects and to understand the structural stability, of the final product, multiscale: thermodynamic modeling has been used to predict the size and temperature dependence of these steps and to show how this directly relates to catalytic reactivity. The results show that relatively modest annealing can promote the formations of surface steps and kinks and can more than double the reactivity of particles at industrially relevant sizes.",
author = "Amanda Barnard and Lan-Yun Chang",
year = "2011",
doi = "10.1021/cs100025y",
language = "English",
volume = "1",
pages = "76 -- 81",
journal = "ACS Catalysis",
issn = "2155-5435",
publisher = "American Chemical Society",
number = "2",

}

Thermodynamic cartography and structure/property mapping of commercial platinum catalysts. / Barnard, Amanda; Chang, Lan-Yun.

In: ACS Catalysis, Vol. 1, No. 2, 2011, p. 76 - 81.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Thermodynamic cartography and structure/property mapping of commercial platinum catalysts

AU - Barnard, Amanda

AU - Chang, Lan-Yun

PY - 2011

Y1 - 2011

N2 - The development of the next generation of nanosized heterogeneous catalysts, requires, precise control of the size, shape, and structure of individual components in a variety of chemical environments. Recent reports show that the density of catalytically active defects on Pt nanoparticles is intrinsically linked to performance, such as edges, corners, steps; and kinks, Which may be introduced postsynthesis. To optimize the synthesis of nanoparticles decorated by these defects and to understand the structural stability, of the final product, multiscale: thermodynamic modeling has been used to predict the size and temperature dependence of these steps and to show how this directly relates to catalytic reactivity. The results show that relatively modest annealing can promote the formations of surface steps and kinks and can more than double the reactivity of particles at industrially relevant sizes.

AB - The development of the next generation of nanosized heterogeneous catalysts, requires, precise control of the size, shape, and structure of individual components in a variety of chemical environments. Recent reports show that the density of catalytically active defects on Pt nanoparticles is intrinsically linked to performance, such as edges, corners, steps; and kinks, Which may be introduced postsynthesis. To optimize the synthesis of nanoparticles decorated by these defects and to understand the structural stability, of the final product, multiscale: thermodynamic modeling has been used to predict the size and temperature dependence of these steps and to show how this directly relates to catalytic reactivity. The results show that relatively modest annealing can promote the formations of surface steps and kinks and can more than double the reactivity of particles at industrially relevant sizes.

UR - http://pubs.acs.org/doi/pdfplus/10.1021/cs100025y

U2 - 10.1021/cs100025y

DO - 10.1021/cs100025y

M3 - Article

VL - 1

SP - 76

EP - 81

JO - ACS Catalysis

JF - ACS Catalysis

SN - 2155-5435

IS - 2

ER -