The First Study on the Reactivity of Water Vapor in Metal–Organic Frameworks with Platinum Nanocrystals

Naoki Ogiwara, Hirokazu Kobayashi, Patricia Concepción, Fernando Rey, Hiroshi Kitagawa

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

We first studied the reactivity of H2O vapor in metal–organic frameworks (MOFs) with Pt nanocrystals (NCs) through the water–gas shift (WGS) reaction. A water-stable MOF, UiO-66, serves as a highly effective support material for the WGS reaction compared with ZrO2. The origin of the high catalytic performance was investigated using in situ IR spectroscopy. In addition, from a comparison of the catalytic activities of Pt on UiO-66, where Pt NCs are located on the surface of UiO-66 and Pt@UiO-66, where Pt NCs are coated with UiO-66, we found that the competitive effects of H2O condensation and diffusion in the UiO-66 play important roles in the catalytic activity of Pt NCs. A thinner UiO-66 coating further enhanced the WGS reaction activity of Pt NCs by minimizing the negative effect of slow H2O diffusion in UiO-66.

Original languageEnglish
Pages (from-to)11731-11736
Number of pages6
JournalAngewandte Chemie - International Edition
Volume58
Issue number34
DOIs
Publication statusPublished - Aug 19 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry

Fingerprint

Dive into the research topics of 'The First Study on the Reactivity of Water Vapor in Metal–Organic Frameworks with Platinum Nanocrystals'. Together they form a unique fingerprint.

Cite this