Exploratory studies in catalytic coal liquefaction. Final report, June 1978-March 1979

Technical Report · Sat Sep 01 04:00:00 EDT 1979

DOI:https://doi.org/10.2172/5768251· OSTI ID:5768251

Whitehurst, D. D.; Mitchell, T. O.; Farcasiu, M.; Dickert, Jr., J. J.

HRI, has run catalyst aging tests simulating H-coal conditions with Illinois No. 6 coal for approx. 10 days with Cyanamid 1442A (CoMo/Al/sub 2/O/sub 3/), Cyanamid NiMo/Al/sub 3/O/sub 3/, Armak NiMo/Al/sub 2/O/sub 3/, Amocat 1A (CoMo/Al/sub 2/O/sub 3/), and Amocat 1B (Mo/Al/sub 2/O/sub 3/) catalysts. From each test we obtained fresh catalyst, aged catalyst from the end of the run, and total reactor effluents (less gases) from various times during the run. In a test developed at Mobil using a fixed bed, high pressure downflow reactor and model compound mixtures, we examined fresh and aged catalysts for hydrogenation, hydrocracking, isomerization, desulfurization, denitrogenation, and deoxygenation. Several minerals were also included in the tests. Activities, selectivities and deactivation are discussed. Fresh commercial catalysts, especially NiMo/Al/sub 2/O/sub 3/, appear to be undesirably active for the H-Coal process. Amocat 1B is the least active. All catalysts age extensively but the used catalysts are still quite active. Activities for all reactions are reduced in the presence of nitrogen compounds. Hydrocracking activity appears to be critical to denitrogenation effectiveness. Examination of the products of the HRI catalyst aging runs confirms the interpretations of the model compound tests. Also, it is found that 400/sup 0/F/sup +/ product mixtures become more complex as catalysts age, and that the catalysts affect especially the highest (largest size) boiling products, but lose the ability to lower molecular weight as they age. A brief examination of novel hydrogen donor-catalyst systems is also described.

• Research Organization: Mobil Research and Development Corp., Princeton, NJ (USA)
• OSTI ID: 5768251
• Report Number(s): EPRI-AF-1184
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COBALT
COMPARATIVE EVALUATIONS
CRACKING
DATA
DATA FORMS
DECOMPOSITION
DENITRIFICATION
DESULFURIZATION
ELEMENTS
EXPERIMENTAL DATA
GRAPHS
H-COAL PROCESS
HYDROCRACKING
HYDROGENATION
INFORMATION
LIQUEFACTION
METALS
MINERALS
MOLYBDENUM
NICKEL
NUMERICAL DATA
PYROLYSIS
REDUCTION
REFRACTORY METALS
SPECIFICITY
STRUCTURAL MODELS
TABLES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS