In situ study of the hydrogenation of diphenyl ether in the presence of pyrrhotite and H/sub 2/S

Journal Article · Thu Jan 02 04:00:00 EST 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100273a035· OSTI ID:5826638

Montano, P A; Stenberg, V I; Sweeny, P

In the present study the results are reported for measurements of the conversion of diphenyl ether to benzene and phenols in the presence of a pyrrhotite catalyst. In situ Moessbauer measurements were performed during the catalytic conversion of diphenyl ether. The presence of Fe/sub 3/O/sub 4/ is detected in the residues after reaction; Fe/sub 1-x/S is also observed. Under high H/sub 2/S partial pressures in the reactor, the conversion increases, and for a 10% H/sub 2/S partial pressure, the Moessbauer spectrum shows the presence of FeS/sub 2/. The amount of Fe/sub 3/O/sub 4/ is practically reduced to zero in this case with Fe/sub 1-x/S dominating the spectrum. All the Moessbauer spectra show the presence of a singlet line after reaction. This spectrum results from the interaction of the iron in the pyrrhotites with the compounds present in the reactor at high temperatures. The conversion of diphenyl ether is negligible in the absence of pyrrhotite. The higher activity observed for conversion in the presence of H/sub 2/S is related to the effect this compound has in controlling the stoichiometry of the pyrrhotites. The activity observed in the iron sulfides toward hydrogenation of diphenyl ether is suggestive of a catalytic role for such sulfides in the cleavage of oxygen bonds in direct coal liquefaction. 18 references, 6 figures.

• Research Organization: West Virginia Univ., Morgantown
• OSTI ID: 5826638
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:1; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AROMATICS
BENZENE
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
DATA
ETHERS
EXPERIMENTAL DATA
GAMMA SPECTROMETERS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXY COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON OXIDES
MEASURING INSTRUMENTS
MOESSBAUER EFFECT
MOESSBAUER SPECTROMETERS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENOLS
PRESSURE DEPENDENCE
SPECTROMETERS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS