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Title: The characterization of coal liquefaction products obtained under an inert atmosphere and catalytic conditions. Part II: Soluble products

Abstract

Beypazari and Tuncbilek lignite were liquefied using two different catalyst methods physically mixing and impregnation. The liquefaction occurred under conditions of inert atmosphere and various process parameters. Solvent to coal ratio, pressure, catalyst type, catalyst concentration, temperature, and time were examined as process parameters. The most appropriate parameters for the total soluble products obtained by liquefaction of both lignites and for elemental analysis of preasphaltenes were determined as follows: 2/1 solvent to coal ratio; from 1.25 MPa to 2.50 MPa initial nitrogen pressure; Fe{sub 2}O{sub 3} and Mo(CO){sub 6} as catalyst types; 3% as catalyst concentration; 400{sup o}C as reaction temperature; and 60 min as reaction time. In general, fuel quality of both preasphaltene and total soluble products decreased as temperature increased above 400{sup o}C and reaction time exceeded 60 min. The fuel quality of the preasphaltenes and the total soluble products obtained under the catalytic conditions and in the state of impregnation of catalyst onto coal is higher than under the noncatalytic conditions and in the state of physically mixing of catalyst.

Authors:
 [1]
  1. Inonu University, Malatya (Turkey)
Publication Date:
OSTI Identifier:
20752181
Resource Type:
Journal Article
Resource Relation:
Journal Name: Energy Sources, Part A: Recovery Utilisation and Environmental Effects; Journal Volume: 28; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; LIGNITE; BROWN COAL; COAL LIQUEFACTION; COAL LIQUIDS; OPTIMIZATION; CHEMICAL REACTION YIELD; CATALYSTS

Citation Formats

Karaca, H. The characterization of coal liquefaction products obtained under an inert atmosphere and catalytic conditions. Part II: Soluble products. United States: N. p., 2006. Web. doi:10.1080/009083190890102.
Karaca, H. The characterization of coal liquefaction products obtained under an inert atmosphere and catalytic conditions. Part II: Soluble products. United States. doi:10.1080/009083190890102.
Karaca, H. Wed . "The characterization of coal liquefaction products obtained under an inert atmosphere and catalytic conditions. Part II: Soluble products". United States. doi:10.1080/009083190890102.
@article{osti_20752181,
title = {The characterization of coal liquefaction products obtained under an inert atmosphere and catalytic conditions. Part II: Soluble products},
author = {Karaca, H.},
abstractNote = {Beypazari and Tuncbilek lignite were liquefied using two different catalyst methods physically mixing and impregnation. The liquefaction occurred under conditions of inert atmosphere and various process parameters. Solvent to coal ratio, pressure, catalyst type, catalyst concentration, temperature, and time were examined as process parameters. The most appropriate parameters for the total soluble products obtained by liquefaction of both lignites and for elemental analysis of preasphaltenes were determined as follows: 2/1 solvent to coal ratio; from 1.25 MPa to 2.50 MPa initial nitrogen pressure; Fe{sub 2}O{sub 3} and Mo(CO){sub 6} as catalyst types; 3% as catalyst concentration; 400{sup o}C as reaction temperature; and 60 min as reaction time. In general, fuel quality of both preasphaltene and total soluble products decreased as temperature increased above 400{sup o}C and reaction time exceeded 60 min. The fuel quality of the preasphaltenes and the total soluble products obtained under the catalytic conditions and in the state of impregnation of catalyst onto coal is higher than under the noncatalytic conditions and in the state of physically mixing of catalyst.},
doi = {10.1080/009083190890102},
journal = {Energy Sources, Part A: Recovery Utilisation and Environmental Effects},
number = 4,
volume = 28,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}