Optimization of pd-B/γAl2O3 catalyst preparation for palm oil hydrogenation by response surface methodology (RSM)

A. M. Alshaibani, Zahira Yaakob, A. M. Alsobaai, M. Sahri

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Response surface methodology was used to design and evaluate the experimental variables for Pd-B/γAl2O3 catalyst preparation. The catalyst was prepared by impregnation and chemical reduction. Thirteen different samples of the catalyst were prepared at different KOH concentrations and annealed at various temperatures, before applying them in palm oil hydrogenation. Hydrogenation was performed on a 0.12% Pd- B/γAl2O3 catalyst at a temperature of 393 K, hydrogen pressure of 500 kPa and agitation of 500 rpm for 1 h. The iodine value (IV) and trans fatty acids (TFAs) content responses were measured for each hydrogenated palm oil sample. The predicted models were verified for both responses and found to be statistically adequate. An optimization study was performed on the catalyst preparation variables for minimizing both IV and TFAs content. The Pd-B/γAl2O3 prepared under optimized conditions exhibited 47% higher conversion and 22% lower trans-isomerization selectivity than Escat 1241 commercial catalyst. The Pd-B/γAl 2O3 catalyst preparation variables have a noticeable effect on palm oil hydrogenation conversion and trans-isomerization selectivity.

Original languageEnglish
Pages (from-to)69-78
Number of pages10
JournalBrazilian Journal of Chemical Engineering
Volume31
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

Palm oil
Hydrogenation
Catalysts
Trans Fatty Acids
Isomerization
Iodine
Fatty acids
Catalyst selectivity
palm oil
Impregnation
Hydrogen
Temperature

Keywords

  • Hydrogenation
  • Iodine value
  • Quadratic model
  • Trans fatty acids content

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Optimization of pd-B/γAl2O3 catalyst preparation for palm oil hydrogenation by response surface methodology (RSM). / Alshaibani, A. M.; Yaakob, Zahira; Alsobaai, A. M.; Sahri, M.

In: Brazilian Journal of Chemical Engineering, Vol. 31, No. 1, 2014, p. 69-78.

Research output: Contribution to journalArticle

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AB - Response surface methodology was used to design and evaluate the experimental variables for Pd-B/γAl2O3 catalyst preparation. The catalyst was prepared by impregnation and chemical reduction. Thirteen different samples of the catalyst were prepared at different KOH concentrations and annealed at various temperatures, before applying them in palm oil hydrogenation. Hydrogenation was performed on a 0.12% Pd- B/γAl2O3 catalyst at a temperature of 393 K, hydrogen pressure of 500 kPa and agitation of 500 rpm for 1 h. The iodine value (IV) and trans fatty acids (TFAs) content responses were measured for each hydrogenated palm oil sample. The predicted models were verified for both responses and found to be statistically adequate. An optimization study was performed on the catalyst preparation variables for minimizing both IV and TFAs content. The Pd-B/γAl2O3 prepared under optimized conditions exhibited 47% higher conversion and 22% lower trans-isomerization selectivity than Escat 1241 commercial catalyst. The Pd-B/γAl 2O3 catalyst preparation variables have a noticeable effect on palm oil hydrogenation conversion and trans-isomerization selectivity.

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