Experimental study on the oxidation reaction parameters of different carbon structure particles

Zhao, Yang; Zhong, Wang; Liu, Shuai; Li, Ruina; Li, Mingdi

doi:10.1002/ep.12101

Cited by 8 publications

(4 citation statements)

References 29 publications

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“…Zhao et. al [43] showed that D3 band FWHM of biodiesel PM increased with biodiesel content. D1 band FWHM, I D1 /I G and A D1 /A G showed reverse relations with t 50% (time corresponding to 50% mass loss) for soot from different sources, and G FWMH was almost the same [21].…”

Section: Resultsmentioning

confidence: 97%

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Gao

Tian

et al. 2018

Fuel

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Section: Resultsmentioning

confidence: 97%

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Gao

Tian

et al. 2018

Fuel

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“…This will result in a higher maximum combustion temperature in the cylinder than when the exhaust gas is introduced. When the oxygen concentration in the cylinder is low, the condition is favorable for the formation and growth of particles , eventually leading to increases in the size, quantity, and mass concentration of particle emissions. However, compared with exhaust gas and N 2 , on the one hand CO 2 has a higher heat capacity value, which can significantly reduce the maximum combustion temperature in the cylinder and has the effect of inhibiting particle formation.…”

Section: Discussionmentioning

confidence: 99%

Effects of exhaust gas recirculation composition and temperature on microscopic mechanical properties of particles in a diesel engine

Zhao

et al. 2018

Env Prog and Sustain Energy

Self Cite

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To investigate the microscopic mechanical properties of particles in a diesel engine, the particles generated with various exhaust gas compositions and temperatures are analyzed by a particle size analyzer and atomic force microscope. The results show that as the exhaust gas temperature increases, the quantity and mass concentration of core mode particle is insignificant, while the accumulation mode particle increased significantly; in addition the particle agglomeration force gradually increases, the major form of agglomeration force gradually shifts from liquid bridge force to Van der Waals force. Studies on exhaust gas composition show that N2 in exhaust gas is the main factor leading to the increase of accumulation mode particle; while CO2 in exhaust gas could reduces the quantity and mass concentration of particle emissions by reducing the accumulation mode particle; when N2 is applied, the particle agglomeration force is primarily assumes the form of the Van der Waals force; when CO2 is applied, the particle agglomeration force primarily assumes the form of a liquid bridge force; increasing N2 content in the exhaust gas can significantly increase the agglomeration force in particles; the effect of increasing CO2 content in the exhaust gas is reversed. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13037, 2019

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“…C b was used to evaluate the burnout performance of the PM samples, and was defined as follows (Zhao et al, 2015):…”

Section: Burnout Characteristic Indexmentioning

confidence: 99%

Pyrolysis Characteristic Analysis of Particulate Matter from Diesel Engine Run on Diesel/Polyoxymethylene Dimethyl Ethers Blends Based on Nanostructure and Thermogravimetry

Yang

Wang

et al. 2016

Aerosol Air Qual. Res.

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This paper focuses on the nanostructural and pyrolysis characteristics of particulate matter (PM) emitted from a diesel engine fueled by three diesel/polyoxymethylene dimethyl ethers (PODE n ) blends. PM was collected using a metal filter from the exhaust manifold. The collected PM samples were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). SEM and TEM analysis showed that PM generated by the 20%-PODE n blend was looser and had a smaller average diameter than that emitted when a lower proportion of PODE n was used. Additionally, fringe length was reduced, and separation distance and tortuosity were increased, when the 20%-PODE n blend was used instead of the other blends. These changes improved the oxidation reactivity of the PM. TGA demonstrated that the PM pyrolysis process was divided into low temperature (characterized by moisture and volatile components) and high temperature (the combustion of solid carbon) stages. When the blending ratio was increased, the moisture and volatile components of the PM showed no obvious change, but the ignition temperature and activation energy were reduced. Additionally, the pyrolysis performance was enhanced; the maximum weight loss rate was higher; the combustion and burnout characteristic indices were higher; and the combustion efficiency of the PM was improved. These results show that the use of diesel blended with oxygenated fuel (PODE n ) affects the nanostructure and pyrolysis of PM, and this PM is easier to oxidize and advantageous for diesel particulate filter regeneration.

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Experimental study on the oxidation reaction parameters of different carbon structure particles

Cited by 8 publications

References 29 publications

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Effects of exhaust gas recirculation composition and temperature on microscopic mechanical properties of particles in a diesel engine

Pyrolysis Characteristic Analysis of Particulate Matter from Diesel Engine Run on Diesel/Polyoxymethylene Dimethyl Ethers Blends Based on Nanostructure and Thermogravimetry

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