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1-Hexene Isomerization Over Nano-crystalline Zeolite Beta: Effects of Metal and Carrier Gases on Catalytic Performance

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Abstract

Zeolite Beta crystals in nanometer size (about 44 nm) were hydrothermally synthesized and its catalytic activities with and without Pt impregnation were studied for 1-hexene isomerization in presence of different carrier gases, namely, hydrogen, nitrogen and carbon dioxide and also in the absence of carrier gas at reaction temperatures of 473–573 K and 0.1 MPa. General observation for all the cases was that with reaction temperature, hexene conversion increased, however, total isomer selectivity dropped. With temperature skeletal isomerization increased at the cost of double bond shift isomerization. Observed product distribution has been explained on the basis of zeolite structure and crystal size. Catalyst performed better in nitrogen than in hydrogen or carbon dioxide as carrier gas. Nevertheless, catalyst life was shorter with nitrogen as carrier gas than that with hydrogen.

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Acknowledgments

Bharat Modhera gratefully acknowledges Council of Scientific and Industrial Research (CSIR), New Delhi, India, for the award of a Senior Research Fellowship.

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Authors and Affiliations

  1. Chemical Engineering Department, S.V. National Institute of Technology, Surat, 395 007, India

    Bharat Modhera, Mausumi Chakraborty & Parimal A. Parikh

  2. Discipline of Inorganic Materials and Catalysis, Central Salt and Marine Chemical Research Institute, Bhavnagar, 364 002, India

    Hari C. Bajaj

Authors
  1. Bharat Modhera
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  2. Mausumi Chakraborty
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  3. Parimal A. Parikh
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  4. Hari C. Bajaj
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Corresponding authors

Correspondence to Parimal A. Parikh or Hari C. Bajaj.

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Modhera, B., Chakraborty, M., Parikh, P.A. et al. 1-Hexene Isomerization Over Nano-crystalline Zeolite Beta: Effects of Metal and Carrier Gases on Catalytic Performance. Catal Lett 132, 168–173 (2009). https://doi.org/10.1007/s10562-009-0082-0

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  • DOI: https://doi.org/10.1007/s10562-009-0082-0

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