Two mechanisms of carbon formation in the decomposition of n-paraffins, naphthenes, and aromatic hydrocarbons with six and seven carbon atoms on silica gel

Autor:	A. A. Balandin, A. P. Rudenko, S. Ya. Kachan
Rok vydání:	1960
Předmět:	chemistry.chemical_classification Cyclohexane Silica gel chemistry.chemical_element General Chemistry Toluene chemistry.chemical_compound Hydrocarbon chemistry Organic chemistry Compounds of carbon Benzene Carbon Pyrolysis
Zdroj:	Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 9:917-923
ISSN:	1573-9171 0568-5230
DOI:	10.1007/bf00903962
Popis:	1. A study was made of the pyrolysis of cyclohexane, methyl -cyclohexane. n-hexane, and n-heptane, in comparison with benzene and toluene, over the range 500–900° on silica gel. It was confirmed that in this case there are two different carbon-formation mechanisms: a low-temperature one up to 690–745° and a high-temperature one at temperatures above 785–825°, which have their own peculiarities for each of the hydrocarbons. 2. In all the cases studied, carbon formation consists of polycondensation of either the starting hydrocarbons or some of their preliminary conversion products. 3. Carbon formation occurs mainly as a result of polycondensation of the starting material for carbon formation with the carbon material. Free aliphatic radicals are of no great importance as starting materials for carbon formation.
Databáze:	OpenAIRE
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