U.S. Department of EnergyOffice of Scientific and Technical Information
Steam gasification of carbon: Catalyst properties. [Quarterly] report, December 14, 1991--March 14, 1992
Abstract
This research uses several techniques to measure the concentration of catalyst sites and determine their stoichiometry for the catalyzed gasification of carbon. Both alkali and alkaline earth oxides are effective catalysts for accelerating the gasification rate of coal chars, but only a fraction of the catalyst appears to be in a form that is effective for gasification, and the composition of that catalyst is not established. Transient techniques, with {sup 13}C labeling, are being used to study the surface processes, to measure the concentration of active sites, and to determine the specific reaction rates. We have used secondary ion mass spectrometry (SIMS) for both high surface area samples of carbon/alkali carbonate mixtures and for model carbon surfaces with deposited alkali atoms. SIMS provides a direct measure of surface composition. The combination of these results can provide knowledge of catalyst dispersion and composition, and thus indicate the way to optimally utilize carbon gasification catalysts.
- Authors:
- Publication Date:
- Research Org.:
- Colorado Univ., Boulder, CO (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 10149222
- Report Number(s):
- DOE/PC/88915-T14
ON: DE92014642
- DOE Contract Number:
- FG22-88PC88915
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: 16 Mar 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; COAL GASIFICATION; CATALYSTS; ALKALI METALS; CATALYTIC EFFECTS; ALKALINE EARTH METALS; PROGRESS REPORT; STEAM; STOICHIOMETRY; SURFACE PROPERTIES; CARBON 13; MASS SPECTROSCOPY; 010404; GASIFICATION
Citation Formats
Falconer, J L. Steam gasification of carbon: Catalyst properties. [Quarterly] report, December 14, 1991--March 14, 1992. United States: N. p., 1992.
Web. doi:10.2172/10149222.
Falconer, J L. Steam gasification of carbon: Catalyst properties. [Quarterly] report, December 14, 1991--March 14, 1992. United States. https://doi.org/10.2172/10149222
Falconer, J L. 1992.
"Steam gasification of carbon: Catalyst properties. [Quarterly] report, December 14, 1991--March 14, 1992". United States. https://doi.org/10.2172/10149222. https://www.osti.gov/servlets/purl/10149222.
@article{osti_10149222,
title = {Steam gasification of carbon: Catalyst properties. [Quarterly] report, December 14, 1991--March 14, 1992},
author = {Falconer, J L},
abstractNote = {This research uses several techniques to measure the concentration of catalyst sites and determine their stoichiometry for the catalyzed gasification of carbon. Both alkali and alkaline earth oxides are effective catalysts for accelerating the gasification rate of coal chars, but only a fraction of the catalyst appears to be in a form that is effective for gasification, and the composition of that catalyst is not established. Transient techniques, with {sup 13}C labeling, are being used to study the surface processes, to measure the concentration of active sites, and to determine the specific reaction rates. We have used secondary ion mass spectrometry (SIMS) for both high surface area samples of carbon/alkali carbonate mixtures and for model carbon surfaces with deposited alkali atoms. SIMS provides a direct measure of surface composition. The combination of these results can provide knowledge of catalyst dispersion and composition, and thus indicate the way to optimally utilize carbon gasification catalysts.},
doi = {10.2172/10149222},
url = {https://www.osti.gov/biblio/10149222},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 16 00:00:00 EST 1992},
month = {Mon Mar 16 00:00:00 EST 1992}
}