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Honeycomb cordierite carrier and preparation method thereof
The invention aims to provide a honeycomb cordierite carrier and a preparation method thereof, and belongs to the technical field of inorganic materials.When the honeycomb cordierite carrier is prepared, firstly, a cordierite material coated with an aluminum oxide coating is immersed in a low-concentration organic alkali solution for low-temperature pretreatment; during pretreatment, the aluminum oxide coating slowly grows in a low-temperature and low-concentration organic alkali environment, and bent lamellar aluminum oxide crystal nucleuses are uniformly formed on the surface of the aluminum oxide coating; and when the aluminum oxide is immersed into the organic alkali solution again for sealed hydrothermal treatment, formed aluminum oxide crystal nucleuses rapidly grow in the high-concentration organic alkali solution under the high-temperature condition, and bent lamellar aluminum oxide is formed. The bent lamellar alumina particles are uniform in form and high in coverage rate, the lamellar particles epitaxially grow and are stacked to form more loose pore channels, and when the bent lamellar alumina particles are used as a carrier material, the contact area during reaction is greatly increased, and the activity stability and the operation period of a corresponding catalyst can be improved.
本发明的目的在于提供一种蜂窝状堇青石载体及其制备方法，属于无机材料制备技术领域，本发明制备蜂窝状堇青石载体时，首先将涂敷氧化铝涂层的堇青石材料浸没于低浓度的有机碱溶液中低温预处理，预处理时氧化铝涂层在低温、低浓度有机碱环境下缓慢生长，并在表面均匀形成弯曲片层状氧化铝晶核；再次浸入有机碱溶液中密封水热处理时，形成的氧化铝晶核在高浓度有机碱溶液、高温条件下迅速生长，并形成弯曲片层状氧化铝。弯曲片层状氧化铝粒子形态均一，覆盖率高，片状粒子外延生长，堆积形成较多的疏松孔道，用作载体材料时，大大提高了反应时的接触面积，可提高相应催化剂的活性稳定性及运转周期。
Honeycomb cordierite carrier and preparation method thereof
The invention aims to provide a honeycomb cordierite carrier and a preparation method thereof, and belongs to the technical field of inorganic materials.When the honeycomb cordierite carrier is prepared, firstly, a cordierite material coated with an aluminum oxide coating is immersed in a low-concentration organic alkali solution for low-temperature pretreatment; during pretreatment, the aluminum oxide coating slowly grows in a low-temperature and low-concentration organic alkali environment, and bent lamellar aluminum oxide crystal nucleuses are uniformly formed on the surface of the aluminum oxide coating; and when the aluminum oxide is immersed into the organic alkali solution again for sealed hydrothermal treatment, formed aluminum oxide crystal nucleuses rapidly grow in the high-concentration organic alkali solution under the high-temperature condition, and bent lamellar aluminum oxide is formed. The bent lamellar alumina particles are uniform in form and high in coverage rate, the lamellar particles epitaxially grow and are stacked to form more loose pore channels, and when the bent lamellar alumina particles are used as a carrier material, the contact area during reaction is greatly increased, and the activity stability and the operation period of a corresponding catalyst can be improved.
本发明的目的在于提供一种蜂窝状堇青石载体及其制备方法，属于无机材料制备技术领域，本发明制备蜂窝状堇青石载体时，首先将涂敷氧化铝涂层的堇青石材料浸没于低浓度的有机碱溶液中低温预处理，预处理时氧化铝涂层在低温、低浓度有机碱环境下缓慢生长，并在表面均匀形成弯曲片层状氧化铝晶核；再次浸入有机碱溶液中密封水热处理时，形成的氧化铝晶核在高浓度有机碱溶液、高温条件下迅速生长，并形成弯曲片层状氧化铝。弯曲片层状氧化铝粒子形态均一，覆盖率高，片状粒子外延生长，堆积形成较多的疏松孔道，用作载体材料时，大大提高了反应时的接触面积，可提高相应催化剂的活性稳定性及运转周期。
Honeycomb cordierite carrier and preparation method thereof
一种蜂窝状堇青石载体及其制备方法
LIU YIFAN (author) / YANG YONGGANG (author) / ZHANG SHUINA (author) / YANG FENGBIN (author) / YANG ZHIXIANG (author) / CUI JIA (author) / PEI ZHICHAO (author) / YANG YONGBIN (author) / GUO XIAOMIN (author)
2024-03-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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