Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels,Industrial & Engineering Chemistry Research

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Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-08-31 , DOI: 10.1021/acs.iecr.1c02219
Lin Zhou ₁ , Jianbo Hu _{1,

2} , Dengzhuo Zhou ₁ , Zhenglu Yang ₁ , Liyuan Chen ₁ , Jun Wang ₃ , Xili Cui _{1,

2} , Huabin Xing _{1,

2}

Affiliation

The separation of close boiling and azeotropic mixtures of cyclopentane and neohexane is highly challenging in petrochemical industries. Current solutions including azeotropic and extractive distillations require high energy costs and complicated operations. The alternative separation method based on physical adsorption is energy-efficient; however, it has not yet been utilized for the splitting of these two compounds. Herein, we present the kinetic sieving of the abovementioned mixtures by a commercially available zeolite, silicalite-1, which offers intersecting 10-ring channels to promote the adsorption of cyclopentane but possesses steric constraints on the intracrystalline transport of neohexane. In both vapor and liquid phases, the material allows for highly selective separations of cyclopentane/neohexane mixtures under dynamic conditions, which is highly promising for industrial applications.

中文翻译：

通过具有交叉 10 环通道的 MFI 沸石对环戊烷/新己烷混合物进行动力学分子筛分

环戊烷和新己烷的沸点和共沸混合物的分离在石化工业中极具挑战性。当前包括共沸蒸馏和萃取蒸馏在内的解决方案需要高能源成本和复杂的操作。基于物理吸附的替代分离方法节能；然而，它尚未用于拆分这两种化合物。在本文中，我们展示了通过市售沸石硅沸石-1 对上述混合物进行的动力学筛分，该沸石提供交叉的 10 环通道以促进环戊烷的吸附，但对新己烷的晶内传输具有空间限制。在气相和液相中，该材料允许在动态条件下对环戊烷/新己烷混合物进行高选择性分离，

更新日期：2021-09-15

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