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Preparation of Pt/Al2O3 catalyst in CTAB microemulsion and kinetics of m-chloronitrobenzene hydrogenation

  • Chemical Kinetics and Catalysis
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Abstract

Pt/Al2O3 catalyst was prepared successfully by a microemulsion method using cetyltrimethylammonium bromide (CTAB) as the surfactant and N2H5OH as the reducing agent. Selective hydrogenation of m-chloronitrobenzene (m-CNB) was used as a probe to investigate how parameters affect the preparation of catalysts via the microemulsion method. Transmission electron microscope (TEM) and selected-area electron diffraction (SAED) show that Pt particles (mean size 3 nm) were distributed uniformly on the catalyst and were in polycrystalline structure. Experiments on m-CNB selective hydrogenation show that at 303 K and hydrogen pressure of 0.1 MPa, the turnover frequency (TOF) was 0.216 s–1, the m-CNB conversion was 99.6% and the m-CAN selectivity was 98.9%, indicating high dechlorination inhibition effect. The reaction was an approximately first-order process with apparent activation energy of 26.92 kJ mol–1.

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Authors and Affiliations

  1. Provincial Key Laboratory of Oil and Gas Chemical Technology, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, Heilongjiang, China

    Feng Li, Bo Cao, Rui Ma & Hua Song

  2. Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province, Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China

    Hualin Song

Authors
  1. Feng Li
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  2. Bo Cao
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  3. Rui Ma
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  4. Hualin Song
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  5. Hua Song
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Correspondence to Hua Song.

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Li, F., Cao, B., Ma, R. et al. Preparation of Pt/Al2O3 catalyst in CTAB microemulsion and kinetics of m-chloronitrobenzene hydrogenation. Russ. J. Phys. Chem. 90, 276–281 (2016). https://doi.org/10.1134/S0036024416020151

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  • DOI: https://doi.org/10.1134/S0036024416020151

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