Control of catalytic hydrotreating selectivity with ammonia. [Hydrodeoxygenation]

Technical Report · Tue Jan 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/5805069· OSTI ID:5805069

Satterfield, C N; Lee, Chung M

The focus of our attention has now shifted to the effect of ammonia on hydrodeoxygenation (HDO) of selected model compounds. Scouting studies with 2-phenylphenol (OPP), phenyl ether (PE), 3-ethylphenol (MEP) and dibenzofuran (DBF) indicated some inhibition of hydrogenation activity but with OPP, PE and MEP several products were formed that were not completely identified and kinetic analysis would be difficult. We therefore focused on DBF, with which we have had some experience, and we carried out a series of studies at 3.5 MPa and 360{degrees}C. H{sub 2}S was generated in situ and NH{sub 3} was introduced as supercooled liquid by an ISCO pump to constitute 12 kPa in the reactor. Samples of reaction products were anlayzed by g.c. using a 30-m Supelcowax (high polarity) column. The HDO of the DBF network follows two pathways. There is a hydrogenation route where single-ring products predominate, mostly cyclohexane and cyclobenzene. The other path is a hydrogenolysis route where double-ring compounds predominate, mostly cyclohexylbenzene (CHB), biphenyl (BP), and dicyclohexyl (DCH).

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Chemical Engineering
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-89PC89775
• OSTI ID: 5805069
• Report Number(s): DOE/PC/89775-7; ON: DE92009070
• Country of Publication: United States
• Language: English

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AMMONIA
BENZOFURANS
CHALCOGENIDES
CHEMICAL REACTIONS
DOCUMENT TYPES
FURANS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PROGRESS REPORT
REACTION INTERMEDIATES
SULFIDES
SULFUR COMPOUNDS