首页> 外文会议>International Carbon Conference >A NOVEL CARBON NANOTUBES SYNTHESIS CONTINUOUS PROCESS USING IRON FLOATING CATALYST ON MGO PARTICLES FOR CVD OF METHANE IN A FLUIDIZED BED REACTOR
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A NOVEL CARBON NANOTUBES SYNTHESIS CONTINUOUS PROCESS USING IRON FLOATING CATALYST ON MGO PARTICLES FOR CVD OF METHANE IN A FLUIDIZED BED REACTOR

机译:一种新型碳纳米管合成使用铁浮催化剂在流化床反应器中甲烷CGD颗粒上的铁浮催化剂合成连续方法

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A novel continuous process was employed for synthesis of carbon nanotubes (CNTs) by catalytic chemical vapor deposition (CCVD) of methane over Fe/MgO using a combination of a fluidized bed reactor and a floating catalyst. MgO, fluidized by methane as the carbon source, was transferred to top of the hot zone of a fluidized reactor, where ferrocene vapor was introduced. Ferrocene decomposes in the reactor hot zone and iron nanoparticles deposit on the MgO. CNTs are grown by CCVD of methane on the in-situ produced Fe/MgO catalyst, on its flow along the reactor. More efficient contact of the ferrocene and MgO was obtained by placing an annular tube in the ferrocene-MgO contact region. CNTs are only grown when the MgO as the support was introduced into the reactor. Dense entangled bundles of 20-30 nm CNTs with Raman I_G/I_D of about 10, indicating high quality CNTs with low amorphous carbon impurities, were obtained when the annular contactor was used.
机译:使用流化床反应器和浮催化剂的组合,使用新的连续方法来合成甲烷的催化化学气相沉积(CCVD)通过Fe / MgO的催化化学气相沉积(CCVD)。由甲烷流化作为碳源的MgO被引入流化反应器的热区的顶部,其中介绍了二茂铁蒸气。二茂铁在MgO的反应器热区和铁纳米粒子沉积物中分解。 CNT通过甲烷的CCVD在原位生产的Fe / MgO催化剂上生长在其沿反应器的流动。通过将环形管放置在铁茂胶导体接触区域中获得更有效地接触。仅当MgO作为载体引入反应器时仅生长CNT。当使用环形接触器时,获得了约10的拉曼I_G / I_D的浓度为20-30nm cnts,约10,表示具有低无定形碳杂质的高质量CNT。

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