Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Including contact with extraneous additive other than...
Patent
1997-04-10
1998-04-28
Ivy, C. Warren
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Including contact with extraneous additive other than...
568426, 585469, C10G 100
Patent
active
057440263
ABSTRACT:
Dibenzyl ether can be readily cleaved to form primarily benzaldehyde and toluene as products, along with minor amounts of bibenzyl and benzyl benzoate, in the presence of a catalyst system comprising a Group 6 metal, preferably molybdenum, a salt, and an organic halide. Although useful synthetically for the cleavage of benzyl ethers, this cleavage also represents a key model reaction for the liquefaction of coal; thus this catalyst system and process should be useful in coal liquefaction with the advantage of operating at significantly lower temperatures and pressures.
REFERENCES:
N. Ikenaga, et al., "Hydrogen-Transfer Reaction of Coal Model Compounds in Tetralin with Dispersed Catalysts," Energy & Fuels, 8 (4). pp. 947-952 (1994).
C. Yokokawa, et al., "Studies on the Catalysts for Coal Liquefaction," Nenryo Kyokaishi, 70 (10), pp. 978-984 (1991) (Abstract).
R. C. Cookson and S. R. Wallis, "Pyrolysis of Allyl Ethers. Unimolecular Fragmentation to Propenes and Carbonyl Compounds," J. Chem. Soc. (B), 1966, pp. 1245-1256.
P. DeChamplain, et al., "Flash Thermolysis: Multiple Sigmatropic Rearrangements in Ortho-Substituted Aromatic Compounds", Can. J. Chem., vol. 54, 3749-56 (1976).
Badr et al., "Molecular Rearrangements: Part IX -Thermolysis of Dibenzyl Ether" Indian J. Chem., vol. 15B, pp. 242-244 (1977).
R. P. Warzinski & B. C. Bockrath, "Molybdenum Hexacarbonyl as a Catalyst Precursor for Solvent-Free Direct Coal Liquefaction," Energy & Fuels, vol. 10, No. 3, pp. 612-622 (1996).
Blake Michael J.
Eastman Chemical Company
Gwinnell Harry J.
Ivy C. Warren
Vollano Jean F.
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