Residence time effect on fullerene yield in butadiene-based laser pyrolysis flame
Residence time effect on fullerene yield in butadiene-based laser pyrolysis flame
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DOI：
10.1016/j.cplett.2003.08.010
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发表时间：
2003-09-19
影响因子：
2.8
通讯作者：
Reynaud, C
中科院分区：
文献类型：
--
作者：
Ténégal, F;Voicu, I;Reynaud, C
提出了一种利用CO2-激光热解气相混合物合成富勒烯的新路线。吸收激光辐射的小碳氢化合物分子（例如丁二烯）与作为氧化剂的一氧化二氮（N2O）混合。这样的混合物允许避免使用光敏剂如SF 6 ，其导致反应区污染并可能影响富勒烯结构的生长。这封信还证实了混合物中C/O原子比对富勒烯产率的强烈影响，并表明反应物在热解火焰中的停留时间和压力显着影响富勒烯的形成。 (C) 2003 Elsevier B.V. 保留所有权利。
A new route for fullerene synthesis by CO2-laser pyrolysis of gas phase mixture is proposed. Small hydrocarbon molecules which absorb the laser radiation, such as butadiene, are mixed with nitrous oxide (N2O) as oxidizer. Such a mixture allows avoiding the use of a photosensitizer as SF6 which causes contamination of the reaction zone and possibly influences the growth of fullerenic structures. This Letter also confirms the strong influence of the C/O atomic ratio in the mixture on the fullerene yield, and shows that residence time of the reactants in the pyrolysis flame and pressure influence dramatically the fullerene formation. (C) 2003 Elsevier B.V. All rights reserved.