Control of catalyst deactivation with ammonia: Quarterly report for period, September 1, 1987 to November 30, 1987

Technical Report · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5866145

Satterfield, C N

Catalysts are readily deactivated by adsorption of nitrogen compounds. We have now found that the poisoning effect of nonsterically hindered nitrogen compounds, expressed as inhibition adsorption constants derived from Langmuir-Hinshelwood kinetics for thiophene hydrodesulfurization, correlates well with gas phase basicity (proton affinity). The order of adsorption strength agrees generally with that reported for poisoning of hydroprocessing catalysts and of acidic cracking catalysts. Inhibitor adsorption constants from thiophene HDS studies correlate well with measurements of inhibition of the hydrodeoxygenation of dibenzofuran, even when the N-compound undergo considerable reaction and it is necessary to account for the inhibiting effects of reaction intermediates. Studies were on NiMo/Al/sub 2/O/sub 3/ catalyst at 7.0 MPa and 300 to 400/sup 0/C. 33 refs., 14 figs., 2 tabs.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Chemical Engineering
• DOE Contract Number: FG22-85PC80516
• OSTI ID: 5866145
• Report Number(s): DOE/PC/80516-9; ON: DE88003679
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CATALYSTS
DEACTIVATION
COAL LIQUIDS
DESULFURIZATION
ORGANIC NITROGEN COMPOUNDS
ADSORPTION
PETROLEUM
CATALYTIC EFFECTS
HYDROGENATION
MOLYBDENUM
NICKEL
POISONING
PROGRESS REPORT
THIOPHENE
VISCOSITY
CHEMICAL REACTIONS
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
LIQUIDS
METALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
SORPTION
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction