Effect of SF6 addition in the laser synthesis of fullerene and soot from C6H6/O2 or C6H6/N2O sensitized mixtures

被引：19
|
作者：
Alexandrescu, R
Armand, X
Cauchetier, M
Herlin, N [1 ]
Petcu, S
Voicu, I
机构：
[1] CE Saclay, CEA, DSM, DRECAM,Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France
[2] Inst Atom Phys, R-76900 Bucharest, Romania
来源：
CARBON | 1998年 / 36卷 / 09期
关键词：
fullerenes; soot; laser pyrolysis; infrared spectroscopy;
D O I：
10.1016/S0008-6223(97)00222-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of SF6 relative concentration on fullerene and soot formation in the CO2 laser synthesis from benzene/oxygen and benzene/nitrous oxide sensitized mixtures are reported. Infrared (IR) measurements of exhaust gases and of solid products allowed for identification of fluorinated compounds which were indicative for the partial SF6 decomposition. The production of C-60 and C-70 was determined by HPLC. It is found that an optimum temperature range exists for fullerene formation. The influence of SF, dissociation is studied. The formation of fullerene as a function of two different oxidant agents (O-2 or N2O) has also been studied. Preliminary results show a higher production of fullerenes in C6H6/N2O as compared to similar C6H6/O-2 mixtures. From the experimental results, it seems that the synthesis of fullerene by laser pyrolysis is comparable to flame experiments. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1285 / 1290
页数：6
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