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    • 74. 发明申请
    • SINGLE-WALLED CARBON NANOTUBE CATALYSTS AND METHODS FOR PREPARING SAME
    • 单壁碳纳米管催化剂及其制备方法
    • US20080175787A1
    • 2008-07-24
    • US11841853
    • 2007-08-20
    • Jun MADavid Moy
    • Jun MADavid Moy
    • C01B13/00C01B13/14
    • D01F9/127B01J21/005B01J23/002B01J23/005B01J23/78B01J37/0236B01J37/031B01J37/08B01J37/18B01J2523/00B82Y30/00B82Y40/00C01B32/162C01B2202/02B01J2523/22B01J2523/842B01J2523/845B01J2523/41B01J2523/31
    • An activated catalyst capable of selectively growing single-walled carbon nanotubes when reacted with carbonaceous gas is provided. The activated catalyst is formed by reducing a catalyst that comprises a complex oxide. The complex oxide may be of formula Ax−wFwBy−vGvOz wherein x/y≦2; z/y≦4; 0≦w≦0.3x; 0≦v≦0.3y; A is a Group VIII element; F is an element that is different from A but has, in said composition, the same valence state as A; B is an element different from A and F, and is an element whose simple oxide, in which B is at the same valence state as in the complex oxide, is not reducible in the presence of hydrogen gas at a temperature less than about 900° C.; G is an element different from A, B and F, and is an element whose simple oxide, in which G is at the same valence state as in the complex oxide, is not reducible in the presence of hydrogen gas at a temperature less than about 900° C.; and O is oxygen. The complex oxide is reduced at a temperature less that 950° C. Methods of making, uses for and carbon fibril-containing product made with these activated catalysts are also provided.
    • 提供能够与碳质气体反应时能够选择性地生长单壁碳纳米管的活化催化剂。 通过还原包含复合氧化物的催化剂形成活化的催化剂。 复合氧化物可以是式A的化合物,其中R 1,R 2,R 3,R 3, 其中x / y <= 2; z / y <= 4; 0 <= w <= 0.3x; 0 <= v <= 0.3y; A是VIII族元素; F是与A不同的元素,在所述组合物中具有与A相同的价态; B是与A和F不同的元素,并且是其中B与复合氧化物处于相同价态的简单氧化物在氢气存在下在小于约900°的温度下不可还原的元素 C。; G是不同于A,B和F的元素,并且是其中G与复合氧化物处于相同价态的简单氧化物的元素在氢气存在下在小于约 900°C。 而O是氧。 复合氧化物在低于950℃的温度下还原。还提供了用这些活化的催化剂制备,用于含有原纤维的产物的方法。