High-flux ceramic support body, preparation method and application thereof: Fid-Bau Portal

High-flux ceramic support body, preparation method and application thereof

WANG JUNWEI / XU XIN / YIN LIANGJUN

The invention discloses a high-flux ceramic support body, a preparation method and application thereof, and the preparation method comprises the following steps: step 1, preparing ceramic slurry and sacrificial layer slurry; step 2, casting the ceramic slurry and the sacrificial layer slurry on the substrate by adopting a double-layer casting method, wherein the ceramic slurry is on the upper part and the sacrificial layer slurry is on the lower part; step 3, transferring the tape-cast slurry into a curing agent for phase inversion curing, and then drying at room temperature; 4, hot-pressing the two layers of precursors together in a top-to-top manner; and 5, carrying out high-temperature sintering on the hot-pressed ceramic support body to form the porous ceramic support body. The obtained ceramic support body is of a structure shaped like a Chinese character'fei ', a large number of finger-shaped holes are formed in the upper surface and the lower surface, and the ceramic support body has the characteristics of high porosity, high flux, high strength and the like, is easy to load other functional materials, is suitable for separation membrane support bodies and catalyst carriers, and has a relatively high application prospect in the fields of membrane separation, catalysis and the like.

本发明公开了一种高通量陶瓷支撑体、制备方法及其应用，所述的制备方法，包括以下步骤：步骤一，制备陶瓷浆料和牺牲层浆料；步骤二，采用双层流延的方法将陶瓷浆料和牺牲层浆料流延的基板上，其中陶瓷浆料在上，牺牲层浆料在下；步骤三，将流延的浆料转移到固化剂中进行相转化固化，然后室温干燥；步骤四，将两层前驱体顶对顶热压在一起；步骤五，将热压后的陶瓷支撑体进行高温烧结，形成多孔陶瓷支撑体。本发明获得陶瓷支撑体呈现“非”字形结构，上下表面具有大量的指状孔，具有孔隙率高、通量高、强度高等特点，并且易于负载其他功能性材料，适用于分离膜支撑体和催化剂载体，在膜分离、催化等领域具有较高的应用前景。

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