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New Method of Generation of Carbon Molecules and Clusters

Open Journal of Synthesis Theory and Applications 2013年第1期2卷 38-45页

作者： Alexey Kharlamov ganna kharlamova Marina Bondarenko Veniamin Fomenko Frantsevich Institute for Problems of Materials Science of NASU Kiev Ukraine Taras Shevchenko National University of Kiev Kiev Ukraine

Firstly the method of joint synthesis of carbon molecules and their hydrides is developed. The stage of high-temperature sublimation of carbon in a new method of generation of carbon molecules is completely excluded. By mass spectrometric method the condensation products of new method of pyrolysis (NMP) benzene are studied. Firstly clusters (C3-C17), typical for carbon vapour, in substances obtained under pyrolysis of hydrocarbons were detected. Fullerene C60 and its hydrides, quasi-fullerenes C48 and C33 inproducts of benzene pyrolysis are detected also. Firstly it is shown what clusters C3-C5 can be generated at so low (100?C-200?C) temperatures of decomposition of substance. Obtained experimental results firstly demonstrate that the small carbon molecules can be generated in reactionary conditions excluding evaporation of carbon. Dehydrogenation and destruction of hydrocarbon molecules is the first stage on a route of the transformation of benzene to carbon molecules.

关键词： Pyrolysis Benzene Fullerene Quasi-Fullerene Small Molecules Mass Spectra Carbon Clusters

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Study of Thermolysis of Hydrogenated Carbon Molecules as Products of Fullerenization of Benzene, Xylene, Ethanol and Pyridine

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Open Journal of Synthesis Theory and Applications 2015年第1期4卷 22-32页

作者： Alexey I. Kharlamov Marina E. Bondarenko ganna A. kharlamova Boris B. Palyanitsa Yury A. Zagorodny Frantsevich Institute for Problems of Materials Science of NASU Kiev Ukraine Taras Shevchenko National University of Kiev Kiev Ukraine O. O. Chuiko Institute of Surface Chemistry NAS of Ukraine Kiev Ukraine

Novel essentially distinct from already known (methods of hydrogenation of fullerenes (C60 and C70) or fullerite) method for the synthesis of highly hydrogenated carbon molecules is developed;such approach is perspective hydrogen capacity accumulators. First, the reactionary conditions are created for the realization of the process of fullerenization as direct transformation of molecules of aromatic hydrocarbons, pyridine and ethanol into carbon molecules, fulleranes (С60Н8-С60Н60 and С70Н8-С70Н44) and quasi-fulleranes (CnHn-6-CnHn-2 (n = 20 - 46)) containing up to 5.7 wt% hydrogen. X-ray amorphous powders of hydrogenated carbon molecules in gram amounts are obtained. Appreciable dehydrogenation of such samples of fulleranes and quasi-fulleranes at ~50°C is began, while dehydrogenation of synthesized from fullerene (or fullerite) fulleranes is observed only at temperatures above 400°C. Methods of NMR, IR spectroscopy, mass spectrometry MALDI and temperature-programmed desorption mass spectrometry EI are used for the study of condensed products of fullerenization of precursors molecules.

关键词： Fullerenization Fulleranes Quasi-Fulleranes Carbon Molecules Pyrolysis Fullerenes Dehydrogenation

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