Reactions of brown coals with CO/H2O in the presence of sodium aluminate

Colin P. Hughes; Tamarapu Sridhar; Lim Soon Chuan; Peter J. Redlich; W. Roy Jackson; Frank P. Larkins

doi:10.1016/0016-2361(93)90399-M

Reactions of brown coals with CO/H₂O in the presence of sodium aluminate

Colin P. Hughes, Tamarapu Sridhar, Lim Soon Chuan, Peter J. Redlich, W. Roy Jackson, Frank P. Larkins

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22 Citations (Scopus)

Abstract

Reactions of some Victorian brown coals with CO/H₂O in the presence of sodium aluminate in microautoclaves with rapid heat-up times have been shown to give very high conversions to products soluble in tetrahydrofuran (THF) under mild conditions (355 °C, 3 MPa CO for 1 h). The influence of water loadings, of reaction time and temperature, of sodium aluminate concentration, of gas composition and of CO partial pressure have been investigated. In general, higher conversions were obtained than from reactions of the coal at 355 °C in H₂/tetralin. Oil and asphaltol (THF-soluble, CH₂Cl₂-insoluble) yields were significantly higher for the CO/H₂O than for the H₂/tetralin reactions. The structure of the products has been examined by spectroscopic and elemental analysis. The asphaltols from these CO/H₂O reactions have been shown to have significantly different chemical structures to those from H₂/tetralin reactions.

Original language	English
Pages (from-to)	205-210
Number of pages	6
Journal	Fuel
Volume	72
Issue number	2
DOIs	https://doi.org/10.1016/0016-2361(93)90399-M
Publication status	Published - 1 Jan 1993

Keywords

brown coal
carbon monoxide
catalysis

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10.1016/0016-2361(93)90399-M

Cite this

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title = "Reactions of brown coals with CO/H2O in the presence of sodium aluminate",

abstract = "Reactions of some Victorian brown coals with CO/H2O in the presence of sodium aluminate in microautoclaves with rapid heat-up times have been shown to give very high conversions to products soluble in tetrahydrofuran (THF) under mild conditions (355 °C, 3 MPa CO for 1 h). The influence of water loadings, of reaction time and temperature, of sodium aluminate concentration, of gas composition and of CO partial pressure have been investigated. In general, higher conversions were obtained than from reactions of the coal at 355 °C in H2/tetralin. Oil and asphaltol (THF-soluble, CH2Cl2-insoluble) yields were significantly higher for the CO/H2O than for the H2/tetralin reactions. The structure of the products has been examined by spectroscopic and elemental analysis. The asphaltols from these CO/H2O reactions have been shown to have significantly different chemical structures to those from H2/tetralin reactions.",

keywords = "brown coal, carbon monoxide, catalysis",

author = "Hughes, {Colin P.} and Tamarapu Sridhar and Chuan, {Lim Soon} and Redlich, {Peter J.} and Jackson, {W. Roy} and Larkins, {Frank P.}",

year = "1993",

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TY - JOUR

T1 - Reactions of brown coals with CO/H2O in the presence of sodium aluminate

AU - Hughes, Colin P.

AU - Sridhar, Tamarapu

AU - Chuan, Lim Soon

AU - Redlich, Peter J.

AU - Jackson, W. Roy

AU - Larkins, Frank P.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - Reactions of some Victorian brown coals with CO/H2O in the presence of sodium aluminate in microautoclaves with rapid heat-up times have been shown to give very high conversions to products soluble in tetrahydrofuran (THF) under mild conditions (355 °C, 3 MPa CO for 1 h). The influence of water loadings, of reaction time and temperature, of sodium aluminate concentration, of gas composition and of CO partial pressure have been investigated. In general, higher conversions were obtained than from reactions of the coal at 355 °C in H2/tetralin. Oil and asphaltol (THF-soluble, CH2Cl2-insoluble) yields were significantly higher for the CO/H2O than for the H2/tetralin reactions. The structure of the products has been examined by spectroscopic and elemental analysis. The asphaltols from these CO/H2O reactions have been shown to have significantly different chemical structures to those from H2/tetralin reactions.

AB - Reactions of some Victorian brown coals with CO/H2O in the presence of sodium aluminate in microautoclaves with rapid heat-up times have been shown to give very high conversions to products soluble in tetrahydrofuran (THF) under mild conditions (355 °C, 3 MPa CO for 1 h). The influence of water loadings, of reaction time and temperature, of sodium aluminate concentration, of gas composition and of CO partial pressure have been investigated. In general, higher conversions were obtained than from reactions of the coal at 355 °C in H2/tetralin. Oil and asphaltol (THF-soluble, CH2Cl2-insoluble) yields were significantly higher for the CO/H2O than for the H2/tetralin reactions. The structure of the products has been examined by spectroscopic and elemental analysis. The asphaltols from these CO/H2O reactions have been shown to have significantly different chemical structures to those from H2/tetralin reactions.

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KW - carbon monoxide

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