Isobutanol coupling with ethanol and methanol to ethers over sulfonated resin catalysts: Activities and selectivities
- Lehigh Univ., Bethlehem, PA (United States)
The synthesis of C{sub 5}-C{sub 8} ethers from mixtures of C{sub 1}-C{sub 4} alcohols over strong acid Amberlyst resin catalysts has been initiated, and the overall activity pattern of the resins was found to be Amberlyst-35 > Amberlyst-36 > Amberlyst-15 > Amberlyst-1010, all of which were more active than Nafion-H. With methanol/isobutanol reactants, it was observed that increasing the reaction pressure strongly decreased the space time yield and selectivity of the butenes, principally isobutene, while tending to increase the space time yield of the ethers methylisobutylether (MIBE), methyl tertiarybutyl ether (MTBE), and dimethylether (DME). Other reactant mixtures utilized at high flow rates included ethanol/isobutanol, where EIBE and ETBE were products. Upon increasing the isobutanol/ethanol ratio above 1/1, it was shown that diethylether (DEE) formation decreased but the synthesis of tertiarybutyl isobutylether (TBIBE) increased. A reactant mixture of ethanol/isopropanol was also investigated, and dehydration of the isopropanol readily occurred to form propene and coupling gave diisoproplyether (DIPE) as the dominant product at 90{degrees}C.
- OSTI ID:
- 254851
- Report Number(s):
- CONF-940813-; TRN: 96:003482-0213
- Resource Relation:
- Conference: 208. American Chemical Society (ACS) national meeting, Washington, DC (United States), 21-26 Aug 1994; Other Information: PBD: 1994; Related Information: Is Part Of 207th ACS national meeting. Volume 39, Nos. 1, 2, 3 and 4; PB: 1304 p.
- Country of Publication:
- United States
- Language:
- English
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