Investigation on gas and particle emission characterization of carbon black oxidation process promoted by catalyst/ash

Huang, Junfeng; Meng, Zhongwei; Peng, Yiqiang; Yang, Yi; Jiang, Qingtao; Wang, Wei; Zhao, Changhui

doi:10.1016/j.cej.2022.135015

Cited by 24 publications

(3 citation statements)

References 45 publications

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“…1,9,10,[14][15][16][17][18][19] The CB gas and particle emission characteristics during oxidation have also been reported. 20 Increased surface area and porosity in CB after oxidation are directly linked to the development of HCNS. Smith and Polley 21 demonstrated that consumption of the amorphous core during the oxidation of fine thermal CB at 600 C for 0.25 h under an air stream increased its surface area six-fold without altering the size of the particles.…”

Section: Introductionmentioning

confidence: 99%

“…Due to crystalline inhomogeneity, several studies have shown that oxidation can preferentially remove the amorphous core while maintaining the ordered shell, forming HCNS with applications as an adsorbent and electrode for batteries and supercapacitors 1,9,10,14–19 . The CB gas and particle emission characteristics during oxidation have also been reported 20 …”

Section: Introductionmentioning

confidence: 99%

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Preparation of hollow carbon nanospheres from oxidation of spent tyre oil‐derived carbon black in air

Okoye,

Zhang,

Zhang

2024

Asia-Pacific J Chem Eng

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Hollow carbon nanospheres (HCNS) were prepared from carbon black (CB) derived from spent tyre pyrolysis oil. The pristine CB produced by partial oxidation of the pyrolysis oil in a drop tube furnace was subsequently oxidised in air in a fixed bed reactor to yield HCNS. The effect of oxidation temperature (300 to 700°C) and time (1 to 8 h) on the burn‐off (Bt) of the sample over the duration (t) of oxidation and average reaction rate (Rt) was assessed. The BET surface area and pore volume and the nanostructure of the HCNS samples obtained were characterised using N2 adsorption–desorption and high‐resolution transmission electron microscope (HRTEM) techniques, respectively. Higher temperature and longer oxidation time led to higher Bt. As Bt increased, the BET surface area and pore volume initially increased linearly due to the removal of the amorphous core and then decreased because of the collapse of the shell of the carbon nanostructure. At Bt of ~56%, the maximum BET surface area and pore volume of the HCNS were 383.2 m2 g−1 and 0.39 cm3 g−1, respectively, compared to ~19.5 m2 g−1 and 0.033 cm3 g−1 of the pristine CB. The HRTEM images indicate that the change in BET surface area corresponds to the formation of the HCNS, as the core of the CB particle was preferentially consumed to create a hollow structure. The formation of HCNS follows an internal oxidation model, which is characterised by rapid core consumption and relatively slow shell consumption.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of hollow carbon nanospheres from oxidation of spent tyre oil‐derived carbon black in air

Okoye,

Zhang,

Zhang

2024

Asia-Pacific J Chem Eng

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“…In recent years, there has been a growing focus on air pollution, including particulate matter (PM) and gaseous emissions [1]. PM is one of the main causes for smog, and gaseous pollutants such as carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NO x ) seriously endanger human health [2]. Additionally, carbon dioxide (CO 2 ) emissions contribute to global warming and rising sea levels, which threaten the human living environment [3].…”

Section: Introductionmentioning

confidence: 99%

Real-World Pipe-Out Emissions from Gasoline Direct Injection Passenger Cars

et al. 2022

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The analysis of real-world emissions is necessary to reduce the emissions of vehicles during on-road driving. In this paper, the matrix of gasoline direct injection passenger cars is applied to analyze the real-world emissions. The results show that high acceleration and high speed conditions are major conditions for the particulate number emissions, and the particulate number emissions are positively correlated with torque and throttle opening. The catalyst temperature and saturation are important factors that affect nitrogen oxide emission. The nitrogen oxide emissions of low speed and low torque conditions cannot be ignored in real-world driving. The carbon dioxide emissions are positively correlated with acceleration, torque and throttle opening. Once the vehicles are in the acceleration condition, the carbon dioxide emissions increase rapidly. The vehicles with higher average emission factors are more susceptible to driving behaviors, and the differences in the emission factors are more obvious, leading to an increase in the difficulty of emission control.

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Ash effects on diesel soot–catalytic oxidation and its chemical reaction kinetics: the comparison of powder sample and CDPF waffle sample

Wang,

Liu,

Zhang

et al. 2024

J Therm Anal Calorim

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Investigation on gas and particle emission characterization of carbon black oxidation process promoted by catalyst/ash

Cited by 24 publications

References 45 publications

Preparation of hollow carbon nanospheres from oxidation of spent tyre oil‐derived carbon black in air

Preparation of hollow carbon nanospheres from oxidation of spent tyre oil‐derived carbon black in air

Real-World Pipe-Out Emissions from Gasoline Direct Injection Passenger Cars

Ash effects on diesel soot–catalytic oxidation and its chemical reaction kinetics: the comparison of powder sample and CDPF waffle sample

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