Synthesis of microporous ceramics
    5.
    发明授权
    Synthesis of microporous ceramics 失效
    微孔陶瓷的合成

    公开(公告)号:US5902759A

    公开(公告)日:1999-05-11

    申请号:US789326

    申请日:1997-01-21

    IPC分类号: C04B38/06 C04B38/00

    CPC分类号: C04B38/0022

    摘要: The present invention provides for microporous ceramic materials having a surface area in excess of 70 m.sup.2 /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 0.03 cm.sup.3 /gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided silicon carbide or silicon nitride, whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100.degree. 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.degree. C. to form a microporous ceramic product.

    摘要翻译: 本发明提供了具有超过70m 2 / gm的表面积的微孔陶瓷材料和一种开孔微孔孔结构,其中微孔具有小于20埃的平均宽度,其中所述微孔结构包括大于约0.03的体积 cm3 / gm的陶瓷。 本发明还提供了一种陶瓷前体陶瓷复合材料中间体组合物,其包含陶瓷前体和细分碳化硅或氮化硅的混合物,其热解产物在惰性气氛中或在氨气氛中在高于约1100℃的温度下给出 上升到本发明的微孔陶瓷。 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。

    Synthesis of microporous ceramics
    8.
    发明授权
    Synthesis of microporous ceramics 失效
    微孔陶瓷的合成

    公开(公告)号:US06624228B1

    公开(公告)日:2003-09-23

    申请号:US08668640

    申请日:1996-06-21

    IPC分类号: C08K334

    摘要: 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.

    摘要翻译: 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。

    Production of fuels and lube oils from fischer-tropsch wax
    10.
    发明授权
    Production of fuels and lube oils from fischer-tropsch wax 有权
    从费托蜡生产燃料和润滑油

    公开(公告)号:US07132042B2

    公开(公告)日:2006-11-07

    申请号:US10266368

    申请日:2002-10-08

    IPC分类号: C10G47/02 C10G35/04 C07C5/13

    摘要: Dewaxed fuel and lubricant base stocks are made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at reaction conditions effective to synthesize a waxy hydrocarbon feed boiling in the fuel and lubricant oil ranges, which is hydrodewaxed in a first stage to produce a dewaxed fuel and a partially dewaxed lubricant fraction. The partially dewaxed lubricant fraction is separated into heavy and lower boiling fractions each of which is separately hydrodewaxed, to produce lubricant base stocks. A hydrodewaxing catalyst comprising a hydrogenation component, binder and solid acid component used to hydrodewax at least one, and preferably at least two of the waxy feed and partially dewaxed heavy and lower boiling lubricant fractions.

    摘要翻译: 脱蜡的燃料和润滑剂基础油料是通过(a)从天然气生产合成气制备的,(b)使钴 - 费 - 托催化剂存在下气体中的H 2 H 2和CO反应, 在有效合成在第一阶段加氢脱蜡以产生脱蜡燃料和部分脱蜡的润滑剂部分的燃料和润滑油范围中沸腾的蜡质烃进料的反应条件下。 将部分脱蜡的润滑剂部分分离成分别加氢脱蜡的重和低沸点馏分,以产生润滑剂基础油。 一种加氢脱蜡催化剂,其包含氢化组分,粘合剂和固体酸组分,用于将至少一种,优选至少两种蜡状进料和部分脱蜡的重馏分和低沸点润滑剂馏分进行加氢脱蜡。