Control of catalyst deactivation with ammonia: Quarterly report for period September 1, 1986 to November 30, 1986

Technical Report · Mon Dec 01 04:00:00 EST 1986

OSTI ID:7055563

Satterfield, C N; LaVopa, V

We have earlier reported that the activity of an aged Ni-Mo hydrotreating catalyst could be substantially increased by a short treatment with a 1:1 hydrogen/NH/sub 3/ mixture. This was initially observed for catalysts with (presumably) carbonaceous deposits from hydrodeoxygenation, but we find that some catalyst activity is also recovered even for catalysts coked with anthracene. We have now screened a variety of process variables to see which combination might be most effective. Reactivation was the greatest in the presence of a liquid phase and some H/sub 2/S (12 kPa) as well as ammonia and H/sub 2/. 1 ref., 2 figs., 1 tab.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Chemical Engineering
• DOE Contract Number: FG22-85PC80516
• OSTI ID: 7055563
• Report Number(s): DOE/PC/80516-5; ON: DE87003430
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AMMONIA
ANTHRACENE
AROMATICS
BENZOFURANS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CONDENSED AROMATICS
DEACTIVATION
ELEMENTS
FURANS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
METALS
MOLYBDENUM
NICKEL
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
REGENERATION
RESEARCH PROGRAMS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS