High-performance MOR zeolite membranes were prepared by loading hydrophilic metal oxides onto the surface of α-AlO support via secondary hydrothermal synthesis method. The effects on the surface morphology and hydrophilicity of MOR zeolite membranes were discussed by means of different metal oxides (TiO, VO, CeO, ZrO, WO) and loadings in combination with SEM, XRD, Raman and Water Contact Angle (WCA) characterization. TiO-MOR zeolite composite membranes were found that TiO could increase interface hydrophilicity. The pervaporation performances of TiO-MOR zeolite membranes at different temperatures and feed concentrations were investigated. The mass transfer model combining Maxwell-Stefan mechanism, Kundsen diffusion and viscous flow was used to describe the mass transfer process of water molecules through the zeolite layer, and within the α-AlO scaffolds, respectively. The permeation fluxes of water molecules of TiO-MOR zeolite membranes with the loading of 2 wt% were 0.91 kg m h, 1.00 kg m h and the separation factors were up to 10000 at 348 K with 90 wt% AcOH/HO and 90 wt% AA/HO solutions. TiO-MOR zeolite membranes with well acid resistance and high hydrophilicity had promising prospects in the reaction scene where carboxylic acid and water exist simultaneously, such as esterification, ester hydrolysis, acetic acid aldol condensation, etc.

中文翻译：

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MOR沸石膜的制备及其表面亲水改性在乙酸羟醛缩合反应体系中的应用

通过二次水热合成方法将亲水性金属氧化物负载到α-Al2O3载体表面制备了高性能MOR沸石膜。通过不同金属氧化物（TiO、VO、CeO、ZrO、WO）和负载量，结合SEM、XRD、拉曼和水接触角（WCA）表征，讨论了不同金属氧化物（TiO、VO、CeO、ZrO、WO）对MOR沸石膜表面形貌和亲水性的影响。 TiO-MOR沸石复合膜发现TiO可以增加界面亲水性。研究了 TiO-MOR 沸石膜在不同温度和进料浓度下的渗透汽化性能。结合Maxwell-Stefan机制、Kundsen扩散和粘性流的传质模型分别用于描述水分子通过沸石层和α-Al2O3支架内的传质过程。负载量为2 wt%的TiO-MOR沸石膜的水分子渗透通量分别为0.91 kg·m·h、1.00 kg·m·h，在348 K下，90 wt% AcOH/H2O和90 wt% AA的分离因子高达10000 /H2O 解决方案。 TiO-MOR沸石膜具有良好的耐酸性和高亲水性，在羧酸和水同时存在的酯化、酯水解、乙酸羟醛缩合等反应场景中具有广阔的应用前景。