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    • 9. 发明授权
    • Synthesis of microporous ceramics
    • 微孔陶瓷的合成
    • US06624228B1
    • 2003-09-23
    • US08668640
    • 1996-06-21
    • John Pickett DismukesJack Wayne JohnsonEdward William Corcoran, Jr.Joseph Vallone
    • John Pickett DismukesJack Wayne JohnsonEdward William Corcoran, Jr.Joseph Vallone
    • C08K334
    • C04B38/0022C04B35/56C04B38/0058C04B35/58
    • The present invention provides for microporous ceramic materials having a surface area in excess of 50 m2/gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.015 cm3/gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided particles comprising a non-silicon containing ceramic, carbon, or an inorganic compound having a decomposition temperature in excess of 400° C., whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100° C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic intermediate under controlled conditions of heating up to temperatures of less than 1100° C. to form a microporous ceramic product.
    • 本发明提供具有超过50m 2 / gm的表面积的开孔微孔结构,其中微孔具有小于20埃的平均宽度的微孔陶瓷材料,并且其中所述微孔结构包括更大的体积 大于约0.015cm 3 / gm的陶瓷。 本发明还提供了一种预陶瓷复合中间体组合物,其包含陶瓷前体和包含非硅含量陶瓷,碳或分解温度超过400℃的无机化合物的细碎颗粒的混合物,其热分解产物 在惰性气氛中或在高达少于约1100℃的氨气氛中,产生本发明的微孔陶瓷。 还提供了制备本发明的微孔陶瓷的方法,其包括在加热至低于1100℃的温度的受控条件下陶瓷中间体的热解,以形成微孔陶瓷产品。