Separation of geraniol from citronellol by selective oxidation of geraniol to geranial

Daniel Chong Jun Weng, Jalifah Latip, Siti Aishah Hasbullah, Harjono Sastrohamidjojo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Rhodinol is a mixture of geraniol and citronellol. It is the second fraction in fractional distillation of commercially grown Cymbopogon nardus. The physical and chemical similarities of these two compounds made them inseparable. The individual use of each compound is of great importance. A selective oxidation (hydrogen peroxide activated by platinum black) of geraniol (in rhodinol) to geranial was done while remaining citronellol intact in order to separate the two compounds into different chemical functionality. A yield of 81% geranial achieved while minimizing citronellal formation from citronellol to 17%. Chemical separation using sodium hydrogen sulfite (NaHSO<inf>3</inf>) was done to separate the aldehydes from the unreacted citronellol. Purification using fractional distillation was done to obtain pure geraniol and remove minor fraction of citronellal.

Original languageEnglish
Pages (from-to)1183-1188
Number of pages6
JournalSains Malaysiana
Volume44
Issue number8
Publication statusPublished - 1 Aug 2015

Fingerprint

citral
Oxidation
Distillation
Platinum
Aldehydes
Hydrogen Peroxide
Purification
citronellol
geraniol

Keywords

  • Geranial
  • Geraniol
  • Oxidation
  • Rhodinol
  • Selective

ASJC Scopus subject areas

  • General

Cite this

Separation of geraniol from citronellol by selective oxidation of geraniol to geranial. / Weng, Daniel Chong Jun; Latip, Jalifah; Hasbullah, Siti Aishah; Sastrohamidjojo, Harjono.

In: Sains Malaysiana, Vol. 44, No. 8, 01.08.2015, p. 1183-1188.

Research output: Contribution to journalArticle

Weng, Daniel Chong Jun ; Latip, Jalifah ; Hasbullah, Siti Aishah ; Sastrohamidjojo, Harjono. / Separation of geraniol from citronellol by selective oxidation of geraniol to geranial. In: Sains Malaysiana. 2015 ; Vol. 44, No. 8. pp. 1183-1188.
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