Commercial and developmental catalysts for hydrotreating coed pyrolysis oil

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6616970

Kujawa, S T

The best commercial catalysts for nitrogen removal were nickel molybdates, of which Shell 324, Cyanamid HDS 9A, and Harshaw HT 500 performed best. Sulfur removal was best effected by the cobalt molybdate catalysts, Harshaw HT 400, Shell 344, and Cyanamid HDS-20A. Nickel tungsten catalysts did not perform well. Of ten catalysts developed at Montana State University to test the effects of promoters on the heteroatom removal reaction, cobalt/nickel/molybdenum catalysts showed advantages over commercial catalysts in batch tests. Eight combinations of the cobalt/nickel molybdate catalysts were fabricated and tested in continuous reactors. The results of a 2/sup 4/ factorial analysis showed that nitrogen removal improved with increasing molybdenum and decreasing cobalt on the support and that the low cobalt, high molybdenum combination was the best for sulfur removal. Nickel had no significant effect on nitrogen or sulfur removal. However, none of the developmental catalysts performed as well as the commercial nickel molybdate catalysts in the continuous tests.

• OSTI ID: 6616970
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CARBONIC ACID DERIVATIVES
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
COBALT COMPOUNDS
COED PROCESS
COMPARATIVE EVALUATIONS
CYANAMIDES
DENITRIFICATION
DESULFURIZATION
ELEMENTS
FLUIDS
HYDROGENATION
LIQUEFACTION
LIQUIDS
MOLYBDATES
MOLYBDENUM COMPOUNDS
NICKEL COMPOUNDS
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE TESTING
REMOVAL
SULFUR
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS