Influence of gold promoter on Fischer Tropsch synthesis over Co/Al 2O3 catalysts

N. Ahmad, S. T. Hussain, B. Muhammad, Jim A. Anderson, N. Ali, S. M. Abbas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In order to enhance the catalytic activity of Alumina supported cobalt catalyst (Co/Al2O3) for Fischer Tropsch synthesis, 1.5 and 2.5 wt% Au promoted 10% Co/Al2O3 is synthesized by coprecipitation and impregnation methods. The synthesized catalysts are characterized using XRD, TPR, TGA and BET techniques while fixed bed micro reactor is used to evaluate the activity and selectivity of prepared catalysts. The results confirm that 1.5 wt% Au loading shows higher CO conversion and C5+ hydrocarbons selectivity along with decreased selectivity towards methane and lower hydrocarbons. It is proposed through TPR studies that Au addition enhances the reduction of cobalt oxide thereby increasing the number of active sites and hence catalytic efficiency. Additionally, an increase in pressure and reduced feed flow rate led to excessive hydrocarbons production and subsequent conversion of syngas, possibly due to extended contact time between catalyst and reactants.

Original languageEnglish
Title of host publicationProceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology
Subtitle of host publicationIBCAST 2013
PublisherIEEE Explore
Pages11-15
Number of pages5
ISBN (Electronic)9781467344265
ISBN (Print)9781467344258
DOIs
Publication statusPublished - May 2013
Event2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013 - Islamabad, Pakistan
Duration: 15 Jan 201319 Jan 2013

Conference

Conference2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013
CountryPakistan
CityIslamabad
Period15/01/1319/01/13

Fingerprint

Fischer-Tropsch synthesis
Gold
Catalysts
Hydrocarbons
Cobalt
Catalyst activity
Catalyst selectivity
Coprecipitation
Impregnation
Methane
Alumina
Flow rate
Oxides

Keywords

  • Alumina support
  • Cobalt
  • Fischer Tropsch synthesis
  • Gold

ASJC Scopus subject areas

  • Computer Science (miscellaneous)

Cite this

Ahmad, N., Hussain, S. T., Muhammad, B., Anderson, J. A., Ali, N., & Abbas, S. M. (2013). Influence of gold promoter on Fischer Tropsch synthesis over Co/Al 2O3 catalysts. In Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology: IBCAST 2013 (pp. 11-15). [6512122] IEEE Explore. https://doi.org/10.1109/IBCAST.2013.6512122

Influence of gold promoter on Fischer Tropsch synthesis over Co/Al 2O3 catalysts. / Ahmad, N.; Hussain, S. T.; Muhammad, B.; Anderson, Jim A.; Ali, N.; Abbas, S. M.

Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology: IBCAST 2013. IEEE Explore, 2013. p. 11-15 6512122.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ahmad, N, Hussain, ST, Muhammad, B, Anderson, JA, Ali, N & Abbas, SM 2013, Influence of gold promoter on Fischer Tropsch synthesis over Co/Al 2O3 catalysts. in Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology: IBCAST 2013., 6512122, IEEE Explore, pp. 11-15, 2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013, Islamabad, Pakistan, 15/01/13. https://doi.org/10.1109/IBCAST.2013.6512122
Ahmad N, Hussain ST, Muhammad B, Anderson JA, Ali N, Abbas SM. Influence of gold promoter on Fischer Tropsch synthesis over Co/Al 2O3 catalysts. In Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology: IBCAST 2013. IEEE Explore. 2013. p. 11-15. 6512122 https://doi.org/10.1109/IBCAST.2013.6512122
Ahmad, N. ; Hussain, S. T. ; Muhammad, B. ; Anderson, Jim A. ; Ali, N. ; Abbas, S. M. / Influence of gold promoter on Fischer Tropsch synthesis over Co/Al 2O3 catalysts. Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology: IBCAST 2013. IEEE Explore, 2013. pp. 11-15
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abstract = "In order to enhance the catalytic activity of Alumina supported cobalt catalyst (Co/Al2O3) for Fischer Tropsch synthesis, 1.5 and 2.5 wt{\%} Au promoted 10{\%} Co/Al2O3 is synthesized by coprecipitation and impregnation methods. The synthesized catalysts are characterized using XRD, TPR, TGA and BET techniques while fixed bed micro reactor is used to evaluate the activity and selectivity of prepared catalysts. The results confirm that 1.5 wt{\%} Au loading shows higher CO conversion and C5+ hydrocarbons selectivity along with decreased selectivity towards methane and lower hydrocarbons. It is proposed through TPR studies that Au addition enhances the reduction of cobalt oxide thereby increasing the number of active sites and hence catalytic efficiency. Additionally, an increase in pressure and reduced feed flow rate led to excessive hydrocarbons production and subsequent conversion of syngas, possibly due to extended contact time between catalyst and reactants.",
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N2 - In order to enhance the catalytic activity of Alumina supported cobalt catalyst (Co/Al2O3) for Fischer Tropsch synthesis, 1.5 and 2.5 wt% Au promoted 10% Co/Al2O3 is synthesized by coprecipitation and impregnation methods. The synthesized catalysts are characterized using XRD, TPR, TGA and BET techniques while fixed bed micro reactor is used to evaluate the activity and selectivity of prepared catalysts. The results confirm that 1.5 wt% Au loading shows higher CO conversion and C5+ hydrocarbons selectivity along with decreased selectivity towards methane and lower hydrocarbons. It is proposed through TPR studies that Au addition enhances the reduction of cobalt oxide thereby increasing the number of active sites and hence catalytic efficiency. Additionally, an increase in pressure and reduced feed flow rate led to excessive hydrocarbons production and subsequent conversion of syngas, possibly due to extended contact time between catalyst and reactants.

AB - In order to enhance the catalytic activity of Alumina supported cobalt catalyst (Co/Al2O3) for Fischer Tropsch synthesis, 1.5 and 2.5 wt% Au promoted 10% Co/Al2O3 is synthesized by coprecipitation and impregnation methods. The synthesized catalysts are characterized using XRD, TPR, TGA and BET techniques while fixed bed micro reactor is used to evaluate the activity and selectivity of prepared catalysts. The results confirm that 1.5 wt% Au loading shows higher CO conversion and C5+ hydrocarbons selectivity along with decreased selectivity towards methane and lower hydrocarbons. It is proposed through TPR studies that Au addition enhances the reduction of cobalt oxide thereby increasing the number of active sites and hence catalytic efficiency. Additionally, an increase in pressure and reduced feed flow rate led to excessive hydrocarbons production and subsequent conversion of syngas, possibly due to extended contact time between catalyst and reactants.

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