English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Immobilization of gold-on-carbon catalysts onto perfluorocarbon emulsion droplets to promote oxygen delivery in aqueous phase ᴅ-glucose oxidation

Perovic, M., Zeininger, L., & Oschatz, M. (2021). Immobilization of gold-on-carbon catalysts onto perfluorocarbon emulsion droplets to promote oxygen delivery in aqueous phase ᴅ-glucose oxidation. ChemCatChem, 13(1), 196-201. doi:10.1002/cctc.202001590.

Item is

Files

show Files
hide Files
:
Article.pdf (Publisher version), 817KB
Name:
Article.pdf
Description:
-
OA-Status:
Hybrid
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-

Locators

show

Creators

show
hide
 Creators:
Perovic, Milena1, Author           
Zeininger, Lukas2, Author           
Oschatz, Martin1, Author           
Affiliations:
1Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2364733              
2Lukas Zeininger, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3179204              

Content

show
hide
Free keywords: Perfluorocarbon emulsion, glucose oxidation, porous carbon, gas solubility, Pickering emulsion
 Abstract: The catalytic activity of metal nanoparticles (NPs) supported on porous supports can be controlled by various factors, such as NPs size, shape, or dispersivity, as well as their interaction with support or the properties of the support material itself. However, these intrinsic properties are not solely responsible for the catalytic behavior of the overall reaction system, as the local environment and surface coverage of the catalyst with reactants, products, intermediates and other invloved species often play a crucial role in catalytic processes as well. Their contribution can be particularly critical in liquid-phase reactions that involve gaseous reactants that often suffer from low solubiltiy. One example is ᴅ-glucose oxidation with molecular oxygen over gold nanoparticles supported on porous carbons. The possibility to promote oxygen delivery in such aqueous phase oxidation reactions via the immobilization of heterogenous catalysts onto the interface of perfluorocarbon emulsion droplets is reported here. Gold-on-carbon catalyst particles can stabilize perfluorocarbon droplets in the aqueous phase and the local concentration of the oxidant in the surroundings of the gold nanoparticles accelerates the rate-limiting step of the reaction. Consequently, the reaction rate of a system with the optimal volume fraction of fluorocarbon is higher than a reference emulsion system without fluorocarbon, and the effect is observed even without additional oxygen supply.

Details

show
hide
Language(s): eng - English
 Dates: 2020-11-102021
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/cctc.202001590
BibTex Citekey: https://doi.org/10.1002/cctc.202001590
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: ChemCatChem
  Other : ChemCatChem
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 13 (1) Sequence Number: - Start / End Page: 196 - 201 Identifier: ISSN: 1867-3880