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Thermochemistry, Electrochemistry, and Solution Chemistry
Published in W. M. Haynes, David R. Lide, Thomas J. Bruno, CRC Handbook of Chemistry and Physics, 2016
W. M. Haynes, David R. Lide, Thomas J. Bruno
Cyanogen chloride Cyanogen fluoride Cyanogen iodide Cyclobutanamine Cyclobutane Cyclobutanecarbonitrile Cyclobutene Cycloheptane Cyclohexane Cyclohexanecarbonitrile Cyclohexanethiol Cyclohexanol Cyclohexanone Cyclohexene 1-Cyclohexenecarbonitrile Cyclohexylamine Cyclohexylbenzene Cyclohexylcyclohexane Cyclooctane 1,3-Cyclopentadiene Cyclopentane Cyclopentanecarbonitrile cis-1,2-Cyclopentanediol trans-1,2-Cyclopentanediol Cyclopentanethiol Cyclopentanol Cyclopentanone Cyclopentene 1-Cyclopentenecarbonitrile Cyclopentylamine Cyclopentyl methyl sulfide Cyclopropane Cyclopropanecarbonitrile Cyclopropene Cyclopropylamine Cyclopropylbenzene Cyclotetramethylenetetranitramine
Waste tire pyrolysis and desulfurization of tire pyrolytic oil (TPO) – A review
Published in Journal of the Air & Waste Management Association, 2023
Moshe Mello, Hilary Rutto, Tumisang Seodigeng
The most common and generally accepted reaction mechanism followed during the HDS process was first proposed by Houalla et al. (1978; 1980). There are two main reaction mechanism pathways suggested for desulfurization of DBT and 4,6-DMDBT using the conventional HDS technique; Pathway (1) allows sulfur to be removed without abetting the aromatic rings. The reaction occurs through direct desulfurization or hydrogenolysis, where the carbon-sulfur single bond is cleaved by hydrogen. Pathway (2) follows the hydrogenation process whereby aromatic rings of DBT containing compounds are hydrogenated to 4H-or 6H-DBT intermediates and are subsequently desulfurized. The two pathways are represented in Figure 2 (Houalla et al. 1978). Pathway 1, which involves direct desulfurization, shows that through the C-S bond, hydrogenolysis of DBT gives biphenyl (BiPh). The subsequent reaction involves hydrogenation of the BiPh compound which produces cyclohexylbenzene (CHB).