Impact of Water on Condensed Phase Ethanol Guerbet Reactions

Tyler L. Jordison, Lars Peereboom, Dennis J. Miller

Research output: Contribution to journalArticle

  • 5 Citations

Abstract

The effect of water on higher alcohol and noncondensable gas formation in condensed-phase ethanol Guerbet chemistry over Ni/La2O3/I-Al2O3 catalysts is investigated. Addition of 10 wt % water to anhydrous ethanol has a modest effect on conversion rate but significantly reduces both n-butanol and C6+ alcohol yields and increases noncondensable gas yields. Removal of water formed during Guerbet condensation reactions was accomplished by installing a recirculating loop that passed the reacting solution through a bed of 3 Å molecular sieves at low temperature. Removal of reaction water further reduces gas selectivity to less than 10% and increases alcohol selectivity to greater than 75% at 50% ethanol conversion. Water present in reaction is postulated to adsorb on the nickel surface as âOH, increasing C-C bond breakage of the adsorbed acetaldehyde intermediate, and also interact with basic sites responsible for the condensation reaction, weakening their activity.

LanguageEnglish (US)
Pages6579-6585
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume55
Issue number23
DOIs
StatePublished - Jun 15 2016

Profile

Ethanol
Water
Alcohols
Condensation reactions
Gases
1-Butanol
Acetaldehyde
Molecular sieves
Nickel
Butenes
Catalysts
Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

Cite this

Impact of Water on Condensed Phase Ethanol Guerbet Reactions. / Jordison, Tyler L.; Peereboom, Lars; Miller, Dennis J.

In: Industrial and Engineering Chemistry Research, Vol. 55, No. 23, 15.06.2016, p. 6579-6585.

Research output: Contribution to journalArticle

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