Green diesel production from hydrotreating of oleic acid over NiMo/γ-Al2O3 and NiMoW/γ-Al2O3 catalysts

1 Center of Excellence on catalysis and Catalytic Reaction Engineering Department of Chemical Engineering Chulalongkorn University Bangkok Thailand

Pongsatorn Jantharak1 , Worapon Kiatkittipong2, Suwimol Wongsakulphasatch2,

Navadol Laosiripojana3, Suttichai Assabumrungrat1

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2 Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom Thailand

3 The Joint Graduate School of Energy and Environment,King Mongkut’s University of Technology Thonburi, Bangkok Thailand

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Outline

• Introduction and Objective• Results and discussion• Conclusion

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BiodieselBiodiesel is a promising alternative in renewable fuels production

• decreases amounts of carbon dioxide

• decrease dependence on fossil fuels

• improve the rural economics

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1st generation of biodiesel

<http://en.wikipedia.org/wiki/File:Transesterification_FAME.svg>

<http://image.made-in-china.com/2f0j00pvwQtnfKOUgu/Fatty-Acid-Methyl-Ester.jpg><http://www.extension.org/pages/27137/biodiesel-production-principles-and-processes>

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Hydroprocessing

Decarboxylation

Decarbonylation

Deoxygenation

H2

H2

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2nd generation of biodiesel

There are many advantage over trans-esterification method

Obtain product hydrocarbon like fossil fuel

Product is high cetane number and heating value

Product can blend with diesel fossil fuel more than 5%

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Experiment

• Batch reactor• H2Pressure 40 bar• Temperature 300-400 °C• Reaction time 1-5 hr• Catalyst : NiMo - NiMoW/γAl2O3

• Analysis : GC-FID

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BET surface area

Al2O3 NiMo NiMoW

Surface area(g/m2) 80.8 59.0 58.3

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X-ray diffraction

● WO3

●● NiMoW

●

● Al2O3

● ●

●

● ●

●

●

● NiO

●

● NiMo4

●

●

●●

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NiMo

Conversion

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ConversionNiMoW

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NiMo

Selectivity

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NiMoW

Selectivity

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Yield

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Conclusions The addition of tungsten can improved

the product yield and catalytic activity The suitable condition of this process is at

temperature 350°C and pressure 40 bar in 2hr

The selectivity of product decreased with increasing temperature over 350°C and reaction time

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Acknowledgement(s)

Financial supports from the Thailand Research Fund and Office of Higher Education Commission are gratefully acknowledged.

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Thank you for attentionANDQ&A