Some Kinetics of the Carbonization of Benzene, Acetylene and Diacetylene at 1200°

IR laser-induced carbothermal reduction of silicon monoxide

“…The depletion of benzene and ethyne occurs at the same rate ( Fig. 1), which is different from the earlier observed higher rate of thermal decomposition of benzene compared to ethyne under conventional thermal conditions [32].…”

“…The prevailing ethyne and butadiyne (identified through their respective diagnostic bands at 730 and 627 cm À1 ) formed on the irradiation in benzene are typical products of pyrolysis [33,34] and carbonization [32] of benzene and confirm that benzene is decomposed to transient C 2 and C 4 fragments. The prevailing butadiyne (and minor C 3 H 6 and C 4 H 4 products) formed on the irradiation in ethyne were previously observed in conventional pyrolysis [32,35,36] and carbonization [37] of ethyne. Carbon monoxide being observed in all experiments indicates a reaction of carbonaceous fragments with silicon monoxide, which should resemble the known carbothermal reduction of silica [38].…”

IR laser-induced metal ablation and dielectric breakdown in benzene

“…The detected C 2 , C and H species indicate that carbonization takes place primarily through agglomerization of small C n species [20][21][22] and not through transient polyaromatic hydrocarbons [23]. This view is supported by the formation of acetylene and diacetylene (identified through their respective diagnostic bands at 730 and 627 cm À1 ) which are typical side-products of pyrolysis [24,25] and carbonization [26] of benzene and which confirm that benzene is decomposed into transient C 2 and C 4 fragments.…”

Decomposition of benzene in the RF plasma environmentPart I. Formation of gaseous products and carbon depositions

“…Numerous researchers reported that C 2 H 2 was produced from C 6 H 6 [1,5,11,15,16]. The production routes included pyrolysis, oxidation, combustion, sonication and plasma.…”

“…From the perspective of mass conservation, C 6 H 6 can be decomposed to yield gaseous products, such as H 2 , CH 4 , C 2 H 2 , C 2 H 4 and C 2 H 6 , or can be synthesized to produce larger aromatics, for example PAHs and soot. Furthermore, C 6 H 6 can be pyrolyzed to carbon black [11,12] or synthesized to larger aromatics (fullerenes) [13] under suitable conditions.…”