An Experimental and Detailed Kinetics Modeling Study of Norbornadiene in Hydrogen and Methane Mixtures: Ignition Delay Time and Spectroscopic CO Measurements

Article Energy & Fuels

Chemical kinetics investigation of toluene combustion in a shock tube using spectroscopic CO and H2O laser absorption

Claire M. Gregoire et al.

Summary: Toluene oxidation was investigated using laser diagnostics to measure carbon monoxide and water profiles. The results are important for validating chemical kinetics mechanisms under highly dilute conditions.

FUEL (2023)

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Article Engineering, Aerospace

Oxidation of norbornadiene: Theoretical investigation on H-atom abstraction and related radical decomposition reactions

Jintao Chen et al.

Summary: The chemical kinetics of hydrogen atom (H-atom) abstraction reactions from nor-bornadiene (NBD) by five radicals (H, O(3P), OH, CH3, and HO2), and the unimolecular reac-tions of three NBD derived radicals, were studied through high-level ab-initio calculations. The results show that the H-atom abstraction reactions from the a-carbon atom of NBD are the most critical channels at low temperatures. Total rate constants for H-atom abstraction reactions by OH radical are also the fastest among all of the reaction channels investigated at the temperature range from 298.15 to 2000 K.

PROPULSION AND POWER RESEARCH (2023)

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Article Thermodynamics

Pyrolysis of norbornadiene: An experimental and kinetic modeling study

Kai-Ru Jin et al.

Summary: Pyrolysis of norbornadiene (NBD) was studied using synchrotron radiation photoionization molecular-beam mass spectrometry. A detailed kinetic model was developed to predict the species and reactions involved in the pyrolysis process. The results reveal a two-stage process with the formation of acetylene, cyclopentadiene, C7H8 isomers, and other aromatics in the first stage, followed by the formation of light hydrocarbons and polycyclic aromatic hydrocarbons in the second stage. Sensitivity analysis shows that the reactions in the first stage play a significant role in NBD consumption.

COMBUSTION AND FLAME (2022)

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Article Thermodynamics

An experimental and kinetic modeling study of the auto-ignition of natural gas blends containing C1-C7 alkanes

A. Abd El-Sabor Mohamed et al.

Summary: Experimental measurements were conducted to investigate the ignition delay time of multi-component natural gas mixtures. Results showed that adding heavier hydrocarbons to the mixture significantly increased reactivity and exhibited two-stage ignition behavior. Sensitivity analyses were performed to identify key reactions controlling the ignition behavior of the blends.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2021)

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Article Thermodynamics

Experimental and modeling studies of quadricyclane and 2-ethylnorbornane pyrolysis from atmospheric to high pressure

Hongyan Wang et al.

Summary: This study conducted pyrolysis experiments and built a kinetic model to investigate the decomposition mechanism of 1,3-cyclopentadiene, quadricyclane, and ethylnorbornane, revealing various reaction pathways and product distributions under different conditions. The results showed that the retro-Diels-Alder reaction is the primary pathway for norbornadiene consumption, while isomerization reactions play a greater role in the formation of cycloheptatriene under high pressure.

COMBUSTION AND FLAME (2021)

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Article Energy & Fuels