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Catalytic Ring Opening of MCH and MCP Over Ir Containing USY and HZSM-5 with the Same SiO2/Al2O3 Ratio

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Abstract

Selective ring opening (SRO) of methylcyclohexane (MCH) and methylcyclopentane (MCP) over 0.9 wt% Ir supported on USY and HZSM-5 catalysts with same SiO2/Al2O3 ratio were compared in a fixed-bed reactor. Temperature of 250–300 °C, H2 pressure of 30 bar, WHSV of 1.8 h−1 and H2/feed molar ratio of 40 were used for SRO. The catalysts were synthesized by impregnation method and characterized by BET, H2-chemisorption, H2-TPR, XRD, HR-TEM and NH3-TPD. 0.9 % Ir/USY catalyst converted 52 % of MCH into 28.6 % of ring opening products selectively, and it gave exclusively 67.4 % of ring opening products selectivity at higher 97 % conversion of MCP. In essence, the obtained catalytic results indicated superior catalytic activity for 0.9 wt% Ir/USY catalyst compared to 0.9 wt% Ir/HZSM-5 catalyst. These catalysts exhibit their stability, as well as activity even after 10 h of reaction time.

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Acknowledgments

This research was supported by KRICT through the Institutional Research Program (KK-1101-A0).

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Authors and Affiliations

  1. Green Chemistry Division, KRICT, Daejeon, 305-600, Korea

    Dipali P. Upare, Songhun Yoon & Chul Wee Lee

  2. School of Science, University of Science and Technology (UST), Daejeon, 305-333, Korea

    Dipali P. Upare

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  1. Dipali P. Upare
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  2. Songhun Yoon
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  3. Chul Wee Lee
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Correspondence to Chul Wee Lee.

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Upare, D.P., Yoon, S. & Lee, C.W. Catalytic Ring Opening of MCH and MCP Over Ir Containing USY and HZSM-5 with the Same SiO2/Al2O3 Ratio. Catal Lett 142, 744–752 (2012). https://doi.org/10.1007/s10562-012-0817-1

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  • DOI: https://doi.org/10.1007/s10562-012-0817-1

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