Fine particle clay catalysts for coal liquefaction. Quarterly technical progress report, February 9, 1993--May 8, 1993

Technical Report · Sun Oct 01 00:00:00 EDT 1995

DOI:https://doi.org/10.2172/114606· OSTI ID:114606

Olson, E S

An investigation of new methods for the production and utilization of tetralin-soluble iron oxometallate precursors for coal liquefaction catalysts was continued in this quarter. Further descriptions of the catalytic activities of the sulfided forms were obtained. The hydrogenation activities of catalysts derived from iron oxotitanate and cobalt oxoaluminate were investigated using pyrene as a the test compound, and results were compared with thermal reactions. The hydrogenation activity of iron oxotitanate was superior to other catalysts including iron oxoaluminate. The hydrogenation activity of cobalt oxoaluminate was similar to that of iron oxoaluminate reported in previous quarterly report. The liquefaction of Wyodak subbituminous coal was investigated using in situ sulfided iron oxotitanate catalyst. In order to improve the usefulness of iron oxoaluminate as a liquefaction catalyst, iron oxoaluminate was supported on acid-treated montmorillonite (K-10). Supporting the iron oxoaluminate on an acidic support significantly improved the hydrogenation activity of iron oxoaluminate. The hydrocracking activity was increased by a large factor. Thus the aluminate and titanate structures surrounding the pyrrhotite that forms during sulfidation have a beneficial effect in preventing deactivation of the iron sites, and the presence of the acidic sites in the clay results in effective catalytic synergism between catalyst and support. These clay-supported iron oxometallates are highly promising catalysts for coal liquefaction. Iron oxyhydroxide and triiron supported on acid-treated montmorillonite (K-10) were tested for the liquefaction of ion-exchanged Wyodak (IEW) to minimize effects of the coal mineral matter. Both sulfided catalysts gave very high conversions of coal to THF-soluble and heptane-soluble (oils) products.

• Research Organization: Universal Fuel Development Associates, Inc., Grand Forks, ND (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-91PC90048
• OSTI ID: 114606
• Report Number(s): DOE/PC/90048-T4; ON: DE96000973; TRN: 95:007493
• Resource Relation: Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BIBENZYL
HYDROCRACKING
CATALYSTS
SYNTHESIS
COAL LIQUEFACTION
IRON COMPOUNDS
CATALYTIC EFFECTS
PYRENE
HYDROGENATION
COBALT COMPOUNDS
ALUMINATES
PROGRESS REPORT
DEACTIVATION
HEPTANE
MAGNETITE
MONTMORILLONITE
PYRRHOTITE
SUBBITUMINOUS COAL
SULFIDATION
TETRALIN
CATALYST SUPPORTS
TITANATES