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Production of middle distillate through hydrocracking of paraffin wax over Pd0.15Cs x H2.7−x PW12O40 catalysts: Effect of cesium content and surface acidity

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Abstract

Palladium-exchanged heteropolyacid (Pd0.15Cs x H2.7−x PW12O40) catalysts were prepared by an ion-exchange method with a variation of cesium content (x=2.0, 2.2, 2.5, and 2.7) for use in the production of middle distillate through hydrocracking of paraffin wax. Surface acidity of Pd0.15Cs x H2.7−x PW12O40 catalysts determined by NH3-TPD experiments showed a volcano-shaped trend with respect to cesium content. Surface acidity of the catalysts played an important role in determining the catalytic performance in the hydrocracking of paraffin wax. Conversion of paraffin wax increased with increasing surface acidity of the catalyst, while yield for middle distillate showed a volcano-shaped curve with respect to surface acidity of the catalyst. Among the catalysts tested, Pd0.15Cs2.7PW12O40 catalyst with moderate surface acidity showed the best catalytic performance.

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Authors and Affiliations

  1. School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul, 151-744, Korea

    Joongwon Lee, Sunhwan Hwang, Dong Ryul Park, Jeong Gil Seo, Min Hye Youn, Ji Chul Jung & In Kyu Song

  2. Korea Research Institute of Chemical Technology, Daejeon, 305-600, Korea

    Sang-Bong Lee

  3. School of Chemical Engineering and Bioengineering, University of Ulsan, Ulsan, 680-749, Korea

    Jin Suk Chung

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  1. Joongwon Lee
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  2. Sunhwan Hwang
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  3. Dong Ryul Park
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  4. Jeong Gil Seo
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  5. Min Hye Youn
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  7. Sang-Bong Lee
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  8. Jin Suk Chung
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  9. In Kyu Song
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Correspondence to In Kyu Song.

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Lee, J., Hwang, S., Park, D.R. et al. Production of middle distillate through hydrocracking of paraffin wax over Pd0.15Cs x H2.7−x PW12O40 catalysts: Effect of cesium content and surface acidity. Korean J. Chem. Eng. 27, 807–811 (2010). https://doi.org/10.1007/s11814-010-0127-5

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  • DOI: https://doi.org/10.1007/s11814-010-0127-5

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