An efficient Cu[sbnd]CeO 2 citrate catalyst for higher aliphatic ketone synthesis via alkali-free alkylation of acetone with butanol

Hari Prasad Reddy Kannapu, Minseok Kim, Cheonwoo Jeong, Young-Woong Suh

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A remarkable effect of Cu[sbnd]CeO 2 citrate catalyst was examined for the alkylation of acetone with butanol for making jet-fuel range precursors under elevated reaction conditions, in which 2-heptanone and 6-undecanone were produced as major products with 3-heptene-2-one, 2-heptanol, and butyl butyrate in minor quantities. The catalytic performance was measured over 10 wt% Cu[sbnd]CeO 2 catalysts prepared by calcination at 400–800 °C with an interval of 100 °C followed by identical H 2 activation. Interestingly, the alkylation activity exhibited a volcano-shaped trend with respect to the calcination temperature as copper particle size and basicity played a vital role. The activity results revealed the optimum calcination temperature of 600 °C (namely, Cu[sbnd]CeO 2 -600). When the catalysts prepared by two classical methods such as impregnation and co-precipitation were tested under an identical condition, the citrate method turned out to yield a highly stable nanocatalyst with the following features: the copper particles protected by CeO 2 , a high amount of surface copper species, and the basicity. These are responsible for sturdiness of Cu[sbnd]CeO 2 -600 citrate catalyst in the production of higher aliphatic ketone.

Original languageEnglish
Pages (from-to)402-411
Number of pages10
JournalMaterials Chemistry and Physics
Volume229
DOIs
StatePublished - 2019 May 1

Fingerprint

Butanols
alkylation
Alkylation
Alkalies
citrates
Acetone
Ketones
Butenes
Citric Acid
ketones
acetone
alkalies
Calcination
roasting
catalysts
Copper
Catalysts
synthesis
Alkalinity
copper

Keywords

  • Acetone alkylation
  • Aliphatic ketones
  • Bio-jet fuel
  • Copper-ceria

Cite this

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title = "An efficient Cu[sbnd]CeO 2 citrate catalyst for higher aliphatic ketone synthesis via alkali-free alkylation of acetone with butanol",
abstract = "A remarkable effect of Cu[sbnd]CeO 2 citrate catalyst was examined for the alkylation of acetone with butanol for making jet-fuel range precursors under elevated reaction conditions, in which 2-heptanone and 6-undecanone were produced as major products with 3-heptene-2-one, 2-heptanol, and butyl butyrate in minor quantities. The catalytic performance was measured over 10 wt{\%} Cu[sbnd]CeO 2 catalysts prepared by calcination at 400–800 °C with an interval of 100 °C followed by identical H 2 activation. Interestingly, the alkylation activity exhibited a volcano-shaped trend with respect to the calcination temperature as copper particle size and basicity played a vital role. The activity results revealed the optimum calcination temperature of 600 °C (namely, Cu[sbnd]CeO 2 -600). When the catalysts prepared by two classical methods such as impregnation and co-precipitation were tested under an identical condition, the citrate method turned out to yield a highly stable nanocatalyst with the following features: the copper particles protected by CeO 2 , a high amount of surface copper species, and the basicity. These are responsible for sturdiness of Cu[sbnd]CeO 2 -600 citrate catalyst in the production of higher aliphatic ketone.",
keywords = "Acetone alkylation, Aliphatic ketones, Bio-jet fuel, Copper-ceria",
author = "{Reddy Kannapu}, {Hari Prasad} and Minseok Kim and Cheonwoo Jeong and Young-Woong Suh",
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An efficient Cu[sbnd]CeO 2 citrate catalyst for higher aliphatic ketone synthesis via alkali-free alkylation of acetone with butanol . / Reddy Kannapu, Hari Prasad; Kim, Minseok; Jeong, Cheonwoo; Suh, Young-Woong.

In: Materials Chemistry and Physics, Vol. 229, 01.05.2019, p. 402-411.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - An efficient Cu[sbnd]CeO 2 citrate catalyst for higher aliphatic ketone synthesis via alkali-free alkylation of acetone with butanol

AU - Reddy Kannapu, Hari Prasad

AU - Kim, Minseok

AU - Jeong, Cheonwoo

AU - Suh, Young-Woong

PY - 2019/5/1

Y1 - 2019/5/1

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AB - A remarkable effect of Cu[sbnd]CeO 2 citrate catalyst was examined for the alkylation of acetone with butanol for making jet-fuel range precursors under elevated reaction conditions, in which 2-heptanone and 6-undecanone were produced as major products with 3-heptene-2-one, 2-heptanol, and butyl butyrate in minor quantities. The catalytic performance was measured over 10 wt% Cu[sbnd]CeO 2 catalysts prepared by calcination at 400–800 °C with an interval of 100 °C followed by identical H 2 activation. Interestingly, the alkylation activity exhibited a volcano-shaped trend with respect to the calcination temperature as copper particle size and basicity played a vital role. The activity results revealed the optimum calcination temperature of 600 °C (namely, Cu[sbnd]CeO 2 -600). When the catalysts prepared by two classical methods such as impregnation and co-precipitation were tested under an identical condition, the citrate method turned out to yield a highly stable nanocatalyst with the following features: the copper particles protected by CeO 2 , a high amount of surface copper species, and the basicity. These are responsible for sturdiness of Cu[sbnd]CeO 2 -600 citrate catalyst in the production of higher aliphatic ketone.

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