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Title: Hydrogenation of carbon monoxide over alkali metal/graphite intercalates. Reaction selectivity and catalyst deactivation characteristics. [Alkali metal/graphite intercalates]

Abstract

Sodium graphite (NaC/sub 64/), potassium graphite (KC/sub 6/), and potassium graphite containing 4.5Vertical Bar3< by wt of iron (KFeC) were prepared in situ in a closed-loop recycle reactor and tested for their activity for carbon monoxide hydrogenation at 300/sup 0/C, a 4:1 hydrogen/carbon monoxide ratio, and 700 mm Hg total initial pressure. On NaC/sub 64/, 5-15Vertical Bar3< of the carbon monoxide reacted formed methane, 60-65Vertical Bar3< formed C/sub 2/ compounds, and 25-30Vertical Bar3< formed C/sub 3/ or higher products. Both alkanes and alkenes were formed. On KC/sub 8/, ethane accounted for 80-85Vertical Bar3< of the reacted carbon monoxide, methane for 10-15Vertical Bar3<, and propane for approx. 5Vertical Bar3<. On KFeC, methane was the main product (60-80Vertical Bar3<) and the balance of the converted carbon monoxide was mostly ethane. No carbon dioxide or other oxygen-containing products were detected for any of these catalysts. The catalysts deactivated rapidly owing to reactions of alkali metals with the produced water, in a manner which suggested that only the exposed edges of the layered crystallites were active and that interlayer penetration by carbon dioxide is minimal. The high selectivity for C/sub 2/ compounds was attributed to the regular spacing of the active sites at themore » exposed edges.« less

Authors:
;
Publication Date:
Research Org.:
Texas A and M Univ.
OSTI Identifier:
7066029
Alternate Identifier(s):
OSTI ID: 7066029
Resource Type:
Journal Article
Journal Name:
J. Catal.; (United States)
Additional Journal Information:
Journal Volume: 56:2
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CARBON MONOXIDE; HYDROGENATION; CATALYSTS; COMPARATIVE EVALUATIONS; DEACTIVATION; ETHANE; CHEMICAL REACTION YIELD; GRAPHITE; CATALYTIC EFFECTS; METHANE; PROPANE; CHEMICAL REACTORS; EXPERIMENTAL DATA; IRON COMPOUNDS; POTASSIUM; SODIUM; THERMODYNAMIC ACTIVITY; ALKALI METALS; ALKANES; CARBON; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; DATA; ELEMENTAL MINERALS; ELEMENTS; HYDROCARBONS; INFORMATION; METALS; MINERALS; NONMETALS; NUMERICAL DATA; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YIELDS 090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989); 400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)

Citation Formats

Rosynek, M.P., and Winder, J.B. Hydrogenation of carbon monoxide over alkali metal/graphite intercalates. Reaction selectivity and catalyst deactivation characteristics. [Alkali metal/graphite intercalates]. United States: N. p., 1979. Web.
Rosynek, M.P., & Winder, J.B. Hydrogenation of carbon monoxide over alkali metal/graphite intercalates. Reaction selectivity and catalyst deactivation characteristics. [Alkali metal/graphite intercalates]. United States.
Rosynek, M.P., and Winder, J.B. Thu . "Hydrogenation of carbon monoxide over alkali metal/graphite intercalates. Reaction selectivity and catalyst deactivation characteristics. [Alkali metal/graphite intercalates]". United States.
@article{osti_7066029,
title = {Hydrogenation of carbon monoxide over alkali metal/graphite intercalates. Reaction selectivity and catalyst deactivation characteristics. [Alkali metal/graphite intercalates]},
author = {Rosynek, M.P. and Winder, J.B.},
abstractNote = {Sodium graphite (NaC/sub 64/), potassium graphite (KC/sub 6/), and potassium graphite containing 4.5Vertical Bar3< by wt of iron (KFeC) were prepared in situ in a closed-loop recycle reactor and tested for their activity for carbon monoxide hydrogenation at 300/sup 0/C, a 4:1 hydrogen/carbon monoxide ratio, and 700 mm Hg total initial pressure. On NaC/sub 64/, 5-15Vertical Bar3< of the carbon monoxide reacted formed methane, 60-65Vertical Bar3< formed C/sub 2/ compounds, and 25-30Vertical Bar3< formed C/sub 3/ or higher products. Both alkanes and alkenes were formed. On KC/sub 8/, ethane accounted for 80-85Vertical Bar3< of the reacted carbon monoxide, methane for 10-15Vertical Bar3<, and propane for approx. 5Vertical Bar3<. On KFeC, methane was the main product (60-80Vertical Bar3<) and the balance of the converted carbon monoxide was mostly ethane. No carbon dioxide or other oxygen-containing products were detected for any of these catalysts. The catalysts deactivated rapidly owing to reactions of alkali metals with the produced water, in a manner which suggested that only the exposed edges of the layered crystallites were active and that interlayer penetration by carbon dioxide is minimal. The high selectivity for C/sub 2/ compounds was attributed to the regular spacing of the active sites at the exposed edges.},
doi = {},
journal = {J. Catal.; (United States)},
number = ,
volume = 56:2,
place = {United States},
year = {1979},
month = {2}
}