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    • 53. 发明申请
    • CARBIDE NANOFIBRILS AND METHOD OF MAKING SAME
    • 碳化硅纳米纤维及其制备方法
    • WO1996030570A1
    • 1996-10-03
    • PCT/US1996004366
    • 1996-03-29
    • HYPERION CATALYSIS INTERNATIONAL, INC.
    • HYPERION CATALYSIS INTERNATIONAL, INC.MOY, DavidNIU, Chun-Ming
    • D01F09/08
    • C04B35/62277B82Y30/00C01B32/90C01B32/956C04B35/62281C04B2235/3418C04B2235/428C04B2235/5264C04B2235/5288C04B2235/5296C04B2235/5481C04B2235/767C04B2235/81C04B2235/9661C30B25/005C30B29/36D01F9/08Y10S977/734
    • A plurality of carbides, such as silicon carbide, tungsten carbide, etc., nanofibrils predominantly having diameters substantially less than about 100 nm and a method for making such carbide nanofibrils. The method includes the steps of: heating a plurality of carbon nanotubes or nanofibrils predominantly having diameters less than about 50 nm in a reaction chamber in the presence of a gas of the form QnAm, where Q is a metal capable of forming a carbide, A is an element or radical and n and m are integers necessary to satisfy valences, such as, for example silicon monoxide, and an inert gas in a reaction vessel to a temperature substantially less than 1700 C but sufficiently high to cause substantial reaction of the metal in the gas with the carbon of said carbon nanotubes or nanofibrils to form, in situ, solid carbide nanofibrils, the temperature being sufficiently low to prevent substantial fusing together of individual ones of said carbide nanofibrils, removing at least a portion of A-based gas from said reaction chamber as said reaction progresses, and maintaining said temperature until substantially all the carbon of said nanotubes or nanofibrils has been converted into Q-based carbide.
    • 多个碳化物,例如碳化硅,碳化钨等,主要具有基本上小于约100nm的直径的纳米原纤维和制造这种碳化物纳米原纤维的方法。 该方法包括以下步骤:在QnAm形式的气体存在下,在反应室中加热主要具有小于约50nm的直径的多个碳纳米管或纳米原纤维,其中Q是能够形成碳化物的金属,A 是元素或基团,n和m是满足价态所必需的整数,例如一氧化硅,以及反应容器中的惰性气体至基本上低于1700℃但足够高以引起金属的显着反应 在具有所述碳纳米管或纳米原纤维的碳的气体中,原位形成整体碳纳米原纤维,其温度足够低以防止单个所述碳化物纳米原纤维的实质熔合在一起,除去至少一部分基于A的气体 当所述反应进行时,从所述反应室中回收,并保持所述温度,直到所述纳米管或纳米原纤维的基本上所有的碳已经转化为基于Q的c arbide。