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Title: Nuclear magnetic resonance probe for in situ studies of adsorbed species on catalysts

Abstract

The use of nuclear magnetic resonance (NMR) spectroscopy to study adsorbed species on catalyst surfaces has grown rapidly in the last 10 years. To date, most investigators have prepared their samples ex situ in a sealed tube that can be placed in the coil of the NMR probe. While simple, this technique is inconvenient for studying the effects of adsorbate pressure and adsorption temperature. A more flexible arrangement involves sample cells that can be attached to a volumetric adsorption apparatus, or gas feed system. Using this approach, it is possible to alternate static adsorption and NMR measurements, or to do batch reactions. In the present paper the authors describe a double resonance NMR probe with a built-in microreactor that can be heated or cooled. This design permits investigations of steady-state catalytic reactions, as well as static adsorption experiments.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley Lab., CA (USA)
OSTI Identifier:
5306347
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
J. Catal.; (United States)
Additional Journal Information:
Journal Volume: 106:1
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CATALYSTS; SURFACE PROPERTIES; NMR SPECTROMETERS; PROBES; ADSORPTION; COOLING; DESIGN; HEATING; MEASURING METHODS; NUCLEAR MAGNETIC RESONANCE; STEADY-STATE CONDITIONS; MAGNETIC RESONANCE; MEASURING INSTRUMENTS; RESONANCE; SORPTION; SPECTROMETERS; 400201* - Chemical & Physicochemical Properties

Citation Formats

Haddix, G.W., Reimer, J.A., and Bell, A.T. Nuclear magnetic resonance probe for in situ studies of adsorbed species on catalysts. United States: N. p., 1987. Web. doi:10.1016/0021-9517(87)90216-8.
Haddix, G.W., Reimer, J.A., & Bell, A.T. Nuclear magnetic resonance probe for in situ studies of adsorbed species on catalysts. United States. doi:10.1016/0021-9517(87)90216-8.
Haddix, G.W., Reimer, J.A., and Bell, A.T. Wed . "Nuclear magnetic resonance probe for in situ studies of adsorbed species on catalysts". United States. doi:10.1016/0021-9517(87)90216-8.
@article{osti_5306347,
title = {Nuclear magnetic resonance probe for in situ studies of adsorbed species on catalysts},
author = {Haddix, G.W. and Reimer, J.A. and Bell, A.T.},
abstractNote = {The use of nuclear magnetic resonance (NMR) spectroscopy to study adsorbed species on catalyst surfaces has grown rapidly in the last 10 years. To date, most investigators have prepared their samples ex situ in a sealed tube that can be placed in the coil of the NMR probe. While simple, this technique is inconvenient for studying the effects of adsorbate pressure and adsorption temperature. A more flexible arrangement involves sample cells that can be attached to a volumetric adsorption apparatus, or gas feed system. Using this approach, it is possible to alternate static adsorption and NMR measurements, or to do batch reactions. In the present paper the authors describe a double resonance NMR probe with a built-in microreactor that can be heated or cooled. This design permits investigations of steady-state catalytic reactions, as well as static adsorption experiments.},
doi = {10.1016/0021-9517(87)90216-8},
journal = {J. Catal.; (United States)},
number = ,
volume = 106:1,
place = {United States},
year = {1987},
month = {7}
}