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首页> 外文期刊>RSC Advances >Intrinsic kinetic study of 1-butene isomerization over magnesium oxide catalystviaa Berty stationary catalyst basket reactor
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Intrinsic kinetic study of 1-butene isomerization over magnesium oxide catalystviaa Berty stationary catalyst basket reactor

机译：氧化镁催化剂固定式催化剂篮反应器中1-丁烯异构化的内在动力学研究

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摘要

In this work, we studied the intrinsic kinetics of 1-butene isomerization over a commercial MgO catalyst using a Berty-type reactor (gradient-less recycle reactor). The Berty-type reactor has a behavior equivalent to a continuous stirred tank reactor (CSTR) with perfect mixing. The experimental results from this reactor were selected in a range in the absence of external and internal mass- and heat-transfer resistances, thereby representing the intrinsic kinetics. The 1-butene isomerization was carried out under atmospheric pressure, a WHSV of 1.05-5.47 h(-1), and the reaction temperature from 350 degrees C to 450 degrees C. The kinetic models were established on the basis of different mechanisms for 1-butene isomerization over MgO. The results showed that the LHHW kinetic model provided the best agreement with the experimental data. The reactions involve three steps, including (1) adsorption of 1-butene on the active site, (2) the chemical surface reactions of 1-butene totrans- andcis-2-butene, and (3) the desorption oftrans- andcis-2-butene. The surface reactions were assumed to be the rate-determining step. The percentage error of all predicted values was less than 5% under the studied operating conditions.
机译：在这项工作中，我们使用粘合型反应器（较少的再循环反应器）研究了商业MgO催化剂上的1-丁烯异构化的内在动力学。 Berty型反应器具有相当于具有完美混合的连续搅拌釜反应器（CSTR）的行为。在不存在外部和内部质量和传热抗性的范围内选择来自该反应器的实验结果，从而代表内在动力学。在大气压下进行1-丁烯异构化，WHSV为1.05-5.47 h（-1），反应温度为350℃至450℃。基于不同机制建立动力学模型 - 对MgO的丁烯异构化。结果表明，LHHW动力学模型提供了与实验数据的最佳协议。反应涉及三个步骤，包括（1）在活性位点上吸附1-丁烯，（2）1-丁烯TOTRANS-ANDCIS-2-丁烯的化学表面反应，以及（3）解吸 - andcis-2的解吸 - 丁烯。假设表面反应是速率确定步骤。在研究的操作条件下，所有预测值的百分比误差小于5％。

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  • 来源
    《RSC Advances》 |2020年第60期|共11页
  • 作者

    Ountaksinkul Khunnawat; Wannakao Sippakorn; Praserthdam Piyasan; Assabumrungrat Suttichai;

  • 作者单位

    Chulalongkorn Univ Dept Chem Engn Ctr Excellence Catalysis &

    Catalyt React Engn Fac Engn Bangkok 10330 Thailand;

    SCG Chem Co Ltd 1 Siam Cement Rd Bangkok 10800 Thailand;

    Chulalongkorn Univ Dept Chem Engn Ctr Excellence Catalysis &

    Catalyt React Engn Fac Engn Bangkok 10330 Thailand;

    Chulalongkorn Univ Dept Chem Engn Ctr Excellence Catalysis &

    Catalyt React Engn Fac Engn Bangkok 10330 Thailand;

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  • 正文语种 eng
  • 中图分类 化学;
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