Thermal degradation of alkylated phenols

Semih Eser, J. Perison, R. M. Copenhaver, J. Shiea, H. H. Schobert

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

Six alkylated phenols were selected as model compounds to study the effects of alkyl substitution, e.g., the blocking of 2,4, or 6 positions and steric shielding of phenolic OH, on thermal stability of phenols. Methylphenols are substantially more stable than tert-butylphenols at temperatures between 350 and 450°C in nitrogen and in air. Thermal degradation of tert-butylphenols appears to be governed by the reactions of tert-butyl groups, including intramolecular interactions between tert-butylgroups and phenolic OH. Alkylated benzofurans produced from tert-butylphenols are likely precursors to the sediment and solids. Coupling of alkylated phenols occurs through alkyl groups via formation of methylene bridges at relatively low conversions.

Original languageEnglish (US)
Pages (from-to)514-520
Number of pages7
JournalAmerican Chemical Society, Division of Petroleum Chemistry, Preprints
Volume37
Issue number2
StatePublished - Mar 1 1992

All Science Journal Classification (ASJC) codes

  • Fuel Technology

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