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- W1594969439 abstract "Publisher Summary This chapter discusses the pyrolysis of aromatic heterocyclic compounds. The chapter describes the pyrolysis of oxygen-containing cycles with aromatic character including compounds related to furan and pyrylium ion. Heterocyclic compounds may contain a single cycle or more cycles, which can be isolated or condensed. Compounds with carbon aromatic cycles condensed with heterocycles are also common. Polycyclic aromatic compounds containing heterocycles are sometimes indicated as hetarenes (PHAs). A variety of aromatic heterocyclic rings contain nitrogen as heteroatom. The five-atom rings may contain one nitrogen (pyrrole), two nitrogens (imidazole and pyrazole), three nitrogens (1, 2, 3-triazole and 1, 2, 4- triazole), and four nitrogens (tetrazole). The chapter discusses the pyrolysis of only a few of the aromatic heterocycles containing nitrogen. The main sulfur-containing heterocyclic compound is thiophene. Thiophene, benzothiophene, and dibenzothiophene are present in crude oil at levels up to 3%, and their elimination is an important step in petroleum processing. Pyrolysis of thiophene occurs by a free radical mechanism, starting with a C–H bond cleavage. The chapter describes the aromatic heterocycles containing different heteroatoms." @default.
- W1594969439 created "2016-06-24" @default.
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- W1594969439 date "2010-01-01" @default.
- W1594969439 modified "2023-09-25" @default.
- W1594969439 title "Chapter 21 Pyrolysis of Aromatic Heterocyclic Compounds" @default.
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- W1594969439 doi "https://doi.org/10.1016/s0167-9244(09)02821-2" @default.
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