Electron-Paramagnetic-Resonance Spectroscopy of Catalytic Surfaces

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A review is presented of the application of electron paramagnetic resonance (EPR) spectroscopy to study surfaces of catalytic interest. Spectra of Mo(V) in supported molybdena catalysts illustrate how EPR can assist in the characterization of such materials. The spectra of an adsorbed stable radical, the superoxide ion, are used to show how surface sites on catalysts can be probed by EPR. Unstable radicals which are conceivable intermediates in catalytic reaction mechanisms can be identified via spin trapping experiments, either chemical or matrix isolation. The mobility of adsorbed radicals on surfaces can be studied by EPR. Finally, recent progress in observing EPR spectra from well-defined single-crystal surfaces is discussed.

Original languageEnglish
Pages (from-to)353-363
Number of pages11
JournalColloids and Surfaces. A, Physicochemical and Engineering Aspects
Volume72
DOIs
Publication statusPublished - 17 Jun 1993

Keywords

  • catalytic surfaces
  • electron paramagnetic resonance
  • molybdenum(V)
  • spin-resonance
  • molybdena catalysts
  • zinc-oxide
  • silica
  • radicals
  • dynamics
  • alumina

Cite this

@article{8ae7a42feeac48d1a06acf621f4f0666,
title = "Electron-Paramagnetic-Resonance Spectroscopy of Catalytic Surfaces",
abstract = "A review is presented of the application of electron paramagnetic resonance (EPR) spectroscopy to study surfaces of catalytic interest. Spectra of Mo(V) in supported molybdena catalysts illustrate how EPR can assist in the characterization of such materials. The spectra of an adsorbed stable radical, the superoxide ion, are used to show how surface sites on catalysts can be probed by EPR. Unstable radicals which are conceivable intermediates in catalytic reaction mechanisms can be identified via spin trapping experiments, either chemical or matrix isolation. The mobility of adsorbed radicals on surfaces can be studied by EPR. Finally, recent progress in observing EPR spectra from well-defined single-crystal surfaces is discussed.",
keywords = "catalytic surfaces, electron paramagnetic resonance, molybdenum(V), spin-resonance, molybdena catalysts, zinc-oxide, silica, radicals, dynamics, alumina",
author = "Howe, {Russell Francis}",
year = "1993",
month = "6",
day = "17",
doi = "10.1016/0927-7757(93)80485-W |",
language = "English",
volume = "72",
pages = "353--363",
journal = "Colloids and Surfaces. A, Physicochemical and Engineering Aspects",
issn = "0927-7757",
publisher = "Elsevier",

}

TY - JOUR

T1 - Electron-Paramagnetic-Resonance Spectroscopy of Catalytic Surfaces

AU - Howe, Russell Francis

PY - 1993/6/17

Y1 - 1993/6/17

N2 - A review is presented of the application of electron paramagnetic resonance (EPR) spectroscopy to study surfaces of catalytic interest. Spectra of Mo(V) in supported molybdena catalysts illustrate how EPR can assist in the characterization of such materials. The spectra of an adsorbed stable radical, the superoxide ion, are used to show how surface sites on catalysts can be probed by EPR. Unstable radicals which are conceivable intermediates in catalytic reaction mechanisms can be identified via spin trapping experiments, either chemical or matrix isolation. The mobility of adsorbed radicals on surfaces can be studied by EPR. Finally, recent progress in observing EPR spectra from well-defined single-crystal surfaces is discussed.

AB - A review is presented of the application of electron paramagnetic resonance (EPR) spectroscopy to study surfaces of catalytic interest. Spectra of Mo(V) in supported molybdena catalysts illustrate how EPR can assist in the characterization of such materials. The spectra of an adsorbed stable radical, the superoxide ion, are used to show how surface sites on catalysts can be probed by EPR. Unstable radicals which are conceivable intermediates in catalytic reaction mechanisms can be identified via spin trapping experiments, either chemical or matrix isolation. The mobility of adsorbed radicals on surfaces can be studied by EPR. Finally, recent progress in observing EPR spectra from well-defined single-crystal surfaces is discussed.

KW - catalytic surfaces

KW - electron paramagnetic resonance

KW - molybdenum(V)

KW - spin-resonance

KW - molybdena catalysts

KW - zinc-oxide

KW - silica

KW - radicals

KW - dynamics

KW - alumina

U2 - 10.1016/0927-7757(93)80485-W |

DO - 10.1016/0927-7757(93)80485-W |

M3 - Article

VL - 72

SP - 353

EP - 363

JO - Colloids and Surfaces. A, Physicochemical and Engineering Aspects

JF - Colloids and Surfaces. A, Physicochemical and Engineering Aspects

SN - 0927-7757

ER -