Cited by The synergistic influence mechanism of the alkali metal sodium and CO2 on coal rapid pyrolysis soot: Experiments and DFT calculations

Formation of Polycyclic Aromatic Hydrocarbons (PAHs) in Thermal Systems: A Comprehensive Mechanistic Review DOI

Mohammednoor Altarawneh, Labeeb Ali

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(22), P. 21735 - 21792

Published: Nov. 1, 2024

Polycyclic aromatic hydrocarbons (PAHs) are formed invariably through oxidative and pyrolytic degradation of organic materials fuels. Understanding the highly complex reaction mechanisms that dictate their synthesis in thermal systems has been given a great deal focus. Such interest stems from two broad perspectives, namely, enhancing efficiency combustion system, energy recovery fuels protecting environment. Health environmental effects widely vary among PAHs where certain compounds exhibit carcinogenic tendencies. This critical review mainly aims to provide general mechanistic view commonly discussed formation pathways PAHs. The attained knowledge often incorporates experimental measurements kinetic modelings, as well mapped out by quantum chemical calculations. A sampling species is typically conducted via molecular beam (MB)–mass spectroscopy (MS) technique connected reactor (flow reactor, jet-stirred or shock tube). Generally, PAH precursors encompass four categories (radicals molecules): acetylenic compounds, alkyl radicals, phenyl resonance-stabilized cyclic radicals. Overall, relevance mechanism depends on consistency between proposed model pathways, profiles products at investigated conditions (i.e., temperatures, pressures, distance burners). effect seeding common precursors, with other explored surveying pertinent studies. Growth higher PAHs, including toxic pyrene, most likely involves hydrogen abstraction acetylene addition (HACA)-like starting anthracene bimolecular reactions involve benzyl radicals indene molecules. synergistic collaboration different suggested account for observed fast growth rate As experimentally shown, sequential mass 15 u, 24 26 74 indicate routes MAC, HACA, HAVA*, PAC routes, respectively. Whether physical process initial step conversion into soot (the inception step) still debated literature. Recent evidence underscores commence creating dimers clustering under real flame 400–1200 K). Formation synthetic natural polymers ensues condensation fragments structural arrangements polymeric entities, prior fragmentation. surveyed presented this will be useful readers who aim comprehend chemistry underlying systems.

Language: Английский

Citations

Influence of vitrinite and inertinite on the soot formation characteristics during coal rapid pyrolysis in a drop tube furnace DOI

Donglai Ma,

Hua Ma,

Peng Lv

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121722 - 121722

Published: April 1, 2025

Language: Английский

Citations

Enhanced particulate matter removal from flue gas of organic solid waste through acoustic agglomeration DOI

Guicai Liu,

Xin Zhang,

Pengzhan Liu

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 131244 - 131244

Published: Dec. 1, 2024

Language: Английский

Citations

The synergistic influence mechanism of the alkali metal sodium and CO2 on coal rapid pyrolysis soot: Experiments and DFT calculations DOI

Ziqi Zhao, Jirui Jin, Qian Du

et al.

Fuel, Journal Year: 2024, Volume and Issue: 382, P. 133294 - 133294

Published: Nov. 16, 2024

Language: Английский

Citations