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Double-phase composite ceramic membrane and preparation method thereof
The invention discloses a double-phase composite ceramic membrane and a preparation method thereof, and belongs to the field of membrane separation. The method comprises the following steps: firstly, mixing a nano-scale dual-phase composite material and a micron-scale dual-phase composite material to obtain a mixture; mixing the mixture with water to prepare inorganic material slurry, heating and pressurizing the slurry at the same time to promote ionization of inorganic particles, and carrying out hydrothermal reaction under high-temperature and high-pressure conditions to promote preliminary densification of a film and obtain a sintering precursor; and finally, sintering the sintering precursor to further improve the compactness of the film, so as to prepare a multiphase dense membrane. By avoiding high-temperature sintering and cold sintering processes, the selection of a bidirectional membrane material can be effectively expanded, and the preparation process of the double-phase membrane is improved, so that the purposes of improving the gas separation performance and expanding the gas separation application are achieved.
本发明公开了一种双相复合陶瓷膜及其制备方法，属于膜分离领域。该方法首先将纳米级的双相复合材料和微米级的双相复合材料进行混合，得到混合物；之后将所述的混合物与水混合制备无机材料浆料，之后将该浆料同时加热并加压，促使无机颗粒离子化，并在高温高压条件下发生水热反应，促使膜初步致密化并得到烧结前驱体；最后将所述的烧结前驱体通过烧结进一步提高膜的致密化，从而制备多相致密膜。本发明通过避免高温烧结，冷烧结过程能够有效拓展双向膜材料的选择，以及改进双相膜的制备过程，进而达到提高气体分离性能和拓展气体分离应用的目的。
Double-phase composite ceramic membrane and preparation method thereof
The invention discloses a double-phase composite ceramic membrane and a preparation method thereof, and belongs to the field of membrane separation. The method comprises the following steps: firstly, mixing a nano-scale dual-phase composite material and a micron-scale dual-phase composite material to obtain a mixture; mixing the mixture with water to prepare inorganic material slurry, heating and pressurizing the slurry at the same time to promote ionization of inorganic particles, and carrying out hydrothermal reaction under high-temperature and high-pressure conditions to promote preliminary densification of a film and obtain a sintering precursor; and finally, sintering the sintering precursor to further improve the compactness of the film, so as to prepare a multiphase dense membrane. By avoiding high-temperature sintering and cold sintering processes, the selection of a bidirectional membrane material can be effectively expanded, and the preparation process of the double-phase membrane is improved, so that the purposes of improving the gas separation performance and expanding the gas separation application are achieved.
本发明公开了一种双相复合陶瓷膜及其制备方法，属于膜分离领域。该方法首先将纳米级的双相复合材料和微米级的双相复合材料进行混合，得到混合物；之后将所述的混合物与水混合制备无机材料浆料，之后将该浆料同时加热并加压，促使无机颗粒离子化，并在高温高压条件下发生水热反应，促使膜初步致密化并得到烧结前驱体；最后将所述的烧结前驱体通过烧结进一步提高膜的致密化，从而制备多相致密膜。本发明通过避免高温烧结，冷烧结过程能够有效拓展双向膜材料的选择，以及改进双相膜的制备过程，进而达到提高气体分离性能和拓展气体分离应用的目的。
Double-phase composite ceramic membrane and preparation method thereof
一种双相复合陶瓷膜及其制备方法
ZHANG GUANGRU (author) / FAN ZHENG (author) / LIU ZHENGKUN (author) / JIN WANQIN (author)
2021-12-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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