Synthesis of metal and nitrogen co-doped activated carbon catalysts for the co-production of monocyclic aromatics and hydrogen-rich gas from the pyrolysis of biomass and plastic

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 134652 - 134652

Published: Jan. 1, 2025

Language: Английский

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Overview for methanol and formaldehyde unregulated emissions of methanol fueled engines

Journal of the Energy Institute, Journal Year: 2025, Volume and Issue: unknown, P. 102089 - 102089

Published: April 1, 2025

Language: Английский

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Effect of exhaust gas recirculation (EGR) on diesel engine carbonaceous PM emissions

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

As one of the most effective ways reducing nitrogen oxides (NOx) emission, exhaust gas recirculation (EGR) has been widely used in diesel engines. However, EGR generally shows adversely particulate matter (PM) emissions. The chemical composition PM with application is not well identified because few previous publications focus on this topic, especially for high rate cases. In paper, emission characteristics organic carbon (OC, OC₁-OC₄), elemental (EC, EC₁-EC₂), semi-volatile compounds (SVOCs) including 18 n-alkanes and 20 polycyclic aromatic hydrocarbons (PAHs) a common-rail engine at mild conditions (up to maximum achievable level while maintaining stable combustion) were analyzed four steady-state comprehensively. It can be clearly observed that instead load speed significantly affects EC under experimental conditions. increase increasing rate, which divided two sections, i.e., slight from 0 30% (mild rate) sharp 30–45% (high rate). TC dominated by OC₁, OC₂ EC₁ low fraction evidently increases rate. heavily EC₂ highest ranges, corresponds lower heat release rates (lower HRR_max higher air-fuel ratio these All target PAHs operation modes. adverse effect PAH less significant than emission. Moreover, ring distribution significant. Both total ∑C₁₆-C₂₅ ∑C₂₆-C₃₃ condition comparison those baseline cases, indicates both fuel-derived oil-derived n-alkanes exhibit compared condition. helped other controlling strategies (e.g., fuel injection, after-treatment device) suggested suppress carbonaceous formation modern engine.

Language: Английский

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Effect of exhaust gas recirculation (EGR) on diesel engine carbonaceous PM emissions

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Language: Английский

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Effect of butanol addition in diesel and biodiesel fuels on OC, EC, particulate PAH, and alkyl-PAH emissions from a common-rail diesel engine

Air Quality Atmosphere & Health, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Language: Английский

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