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Title: Catalyst dispersion and activity under conditions of temperature- staged liquefaction

Abstract

The general objectives of this research are (1) to investigate the use of highly dispersed catalysts for the pretreatment of coal by mild hydrogenation, (2) to identify the active forms of the catalysts under reaction conditions and (3) to clarify the mechanisms of catalysis. The ultimate objective is to ascertain if mild catalytic hydrogenation resulting in very limited or no coal solubilization is an advantageous pretreatment for the transformation of coal into transportable fuels. The experimental program will focus upon the development of effective methods of impregnating coal with catalysts, evaluating the conditions under which the catalysts are most active and establishing the relative impact of improved impregnation on conversion and product distributions obtained from coal hydrogenation. Liquefaction experiments of solvent-treated and untreated Blind Canyon (DECS-6) and Texas lignite (DECS-1) have been performed using ammonium tetrathiomolybdate (ATTM) and bis (dicarbonylcyclopentadienyl) iron (CPI) as catalyst precursors using temperature-staged conditions (275{degrees}C, 30 min; 425{degrees}C, 30 min). Solid state {sup 13}C NMR analysis was carried out for each coal and for selected residues. 12 refs., 14 figs., 9 tabs.

Authors:
; ; ;
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States). Energy and Fuels Research Center
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5175085
Report Number(s):
DOE/PC/89877-7
ON: DE92001654
DOE Contract Number:  
AC22-89PC89877
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; AMMONIUM COMPOUNDS; CATALYTIC EFFECTS; COAL LIQUEFACTION; OPTIMIZATION; IRON COMPOUNDS; MOLYBDATES; ASPHALTENES; CALCIUM CARBONATES; CARBONYLS; COAL; HYDROGEN; HYDROGEN SULFIDES; HYDROGENATION; IMAGES; LIGNITE; METHANOL; ORGANIC SOLVENTS; PROGRESS REPORT; PYRIDINE; SUBBITUMINOUS COAL; SWELLING; TEMPERATURE EFFECTS; TETRAHYDROFURAN; ALCOHOLS; ALKALINE EARTH METAL COMPOUNDS; ASPHALTS; AZINES; BITUMENS; BROWN COAL; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBONACEOUS MATERIALS; CARBONATES; CHALCOGENIDES; CHEMICAL REACTIONS; DOCUMENT TYPES; ELEMENTS; ENERGY SOURCES; FOSSIL FUELS; FUELS; FURANS; HETEROCYCLIC COMPOUNDS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; LIQUEFACTION; MATERIALS; MOLYBDENUM COMPOUNDS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PYRIDINES; REFRACTORY METAL COMPOUNDS; SOLVENTS; SULFIDES; SULFUR COMPOUNDS; TAR; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS; 010405* - Coal, Lignite, & Peat- Hydrogenation & Liquefaction; 400201 - Chemical & Physicochemical Properties; 360602 - Other Materials- Structure & Phase Studies

Citation Formats

Davis, A, Schobert, H H, Mitchell, G D, and Artok, L. Catalyst dispersion and activity under conditions of temperature- staged liquefaction. United States: N. p., 1991. Web. doi:10.2172/5175085.
Davis, A, Schobert, H H, Mitchell, G D, & Artok, L. Catalyst dispersion and activity under conditions of temperature- staged liquefaction. United States. https://doi.org/10.2172/5175085
Davis, A, Schobert, H H, Mitchell, G D, and Artok, L. 1991. "Catalyst dispersion and activity under conditions of temperature- staged liquefaction". United States. https://doi.org/10.2172/5175085. https://www.osti.gov/servlets/purl/5175085.
@article{osti_5175085,
title = {Catalyst dispersion and activity under conditions of temperature- staged liquefaction},
author = {Davis, A and Schobert, H H and Mitchell, G D and Artok, L},
abstractNote = {The general objectives of this research are (1) to investigate the use of highly dispersed catalysts for the pretreatment of coal by mild hydrogenation, (2) to identify the active forms of the catalysts under reaction conditions and (3) to clarify the mechanisms of catalysis. The ultimate objective is to ascertain if mild catalytic hydrogenation resulting in very limited or no coal solubilization is an advantageous pretreatment for the transformation of coal into transportable fuels. The experimental program will focus upon the development of effective methods of impregnating coal with catalysts, evaluating the conditions under which the catalysts are most active and establishing the relative impact of improved impregnation on conversion and product distributions obtained from coal hydrogenation. Liquefaction experiments of solvent-treated and untreated Blind Canyon (DECS-6) and Texas lignite (DECS-1) have been performed using ammonium tetrathiomolybdate (ATTM) and bis (dicarbonylcyclopentadienyl) iron (CPI) as catalyst precursors using temperature-staged conditions (275{degrees}C, 30 min; 425{degrees}C, 30 min). Solid state {sup 13}C NMR analysis was carried out for each coal and for selected residues. 12 refs., 14 figs., 9 tabs.},
doi = {10.2172/5175085},
url = {https://www.osti.gov/biblio/5175085}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Sep 01 00:00:00 EDT 1991},
month = {Sun Sep 01 00:00:00 EDT 1991}
}