NO2 catalytic formation, consumption, and efflux in various types of diesel particulate filter

Zhong, Chao; Gong, Jinke; Wang, Shaoli; Tan, Jiqiu; Liu, Junan; Zhu, Yamei; Gao, Jia

doi:10.1007/s11356-020-11870-1

Cited by 18 publications

(9 citation statements)

References 43 publications

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“…[4][5][6] Due to their high fuel economy and large torque, diesel engines have become the main source of power for commercial transportation. [7][8][9][10] However, environmental pollution and human injury caused by NO X emissions from diesel engines have always been the pain points of their development. With the increasingly stringent emission regulations, [11,12] it is essential to configure after-treatment equipment for automobile engines.…”

Section: Introductionmentioning

confidence: 99%

Theoretical analyses of NH₃‐SCR reaction‐mass transfer over Cu‐ZSM‐5

Zhong

Zuo

et al. 2022

Can J Chem Eng

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NH3‐selective catalytic reduction (NH3‐SCR) is a very effective technical means to control NOx emissions from diesel engines, and Zeolite Selony Mobil No. 5 (SiO2/Al2O3 ratio 53:1) ion exchanged with Cu (Cu‐ZSM‐5) provides support for the high performance of NH3‐SCR within a wide temperature window under diesel engine operating conditions. The mechanism of the NH3‐SCR reaction based on Cu‐ZSM‐5 is established. Resistance analysis, effective factor analysis, and characteristic time analysis are used to analyze the influence of external mass transfer limitation and washcoat diffusion limitation on NH3‐SCR reaction and the transition between the washcoat diffusion control regime, the external mass transfer control regime, and the kinetic control regime of the NH3‐SCR over Cu‐ZSM‐5. It provides the basis for the optimization of the catalyst structure and the support for the improvement of NH3‐SCR performance.

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Section: Introductionmentioning

confidence: 99%

Theoretical analyses of NH₃‐SCR reaction‐mass transfer over Cu‐ZSM‐5

Zhong

Zuo

et al. 2022

Can J Chem Eng

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“…Although electric vehicles draw significant research interest [2], much research still targets the improvement of combustion engines [3] for more ecological operation. Optimal functionality The aim of the present study is to apply and examine an exhaust gas temperature (ETG) measurement method which is critical to optimal vehicle operation and effective emissions reduction [5]. Figure 1 illustrates the principle and application of the temperature sensor described in this article.…”

Section: Introductionmentioning

confidence: 99%

An Optical-Based Sensor for Automotive Exhaust Gas Temperature Measurement

Prauzek

Hercík

Konecny

et al. 2022

IEEE Trans. Instrum. Meas.

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The article introduces the design of an optical-based sensor which measures automotive exhaust gas temperatures (EGT) over a wide temperature range. To measure temperature, we combined the luminescence method and blackbody radiation (BBR) principle. We also developed our own measurement hardware which includes the means to process and evaluate the signals obtained for temperature conversion using optical methods for application in the target temperature range (−40 • C to 820 • C). This temperature range is specified by the automotive industry according to current combustion engine designs and emission requirements, which stipulate accurate measurement of operating temperature for optimal functioning. Current measurement solutions are based on the thermocouple principle. This approach is problematic, especially with regard to electromagnetic interference and self-diagnostics, and problems also exist with the gradual penetration of moisture into the temperature probe under extreme thermal stress. The case study confirmed the full functionality of the new optical sensor concept. The benefit of the proposed concept is full compatibility with existing conceptual solutions while maintaining the advantages of optical-based sensors. The results indicated that a combination of the BBR and luminescence methods with a ruby crystal in the proposed solution produced an average absolute error of 2.32 • C in the temperature range −40 • C to 820 • C over a measurement cycle time of 0.25 s.

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“…With the more and more strict legislation to limit the emission of soot particulates, diesel engine soot emission control technology has become the focus of the government and attracted much attention in recent years. The catalytic diesel particulate filter (CDPF) combinating the filtration and catalytic oxidation of soot is considered to be one of the most effective soot elimination technologies [2,3] . To obtain spontaneous regeneration of the CDPFs, the required temperature for soot combustion should be above 550 °C, but the exhaust temperature discharged from diesel engine is generally below 400 °C [4] .…”

Section: Introductionmentioning

confidence: 99%

Fe‐Ce Composite Oxide Catalysts Supported on 3D Nickel Foam for Catalytic Oxidation of Soot

Wang

Shi

et al. 2022

ChemistrySelect

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To reduce the combustion temperature of diesel soot, the FeÀ Ce composite oxide catalysts with varying composition supported by three-dimensional nickel foams were prepared by hydrothermal reaction and impregnation method. The internal structure and performance of the monolithic catalysts were characterized by X-ray diffraction, Raman, scanning electron microscope, X-ray photoelectron spectroscopy and catalyst activity evaluation techniques. The results revealed that when the molar ratio of Ce and Fe was 0.5, the CeO 2 /Fe 2 O 3 @NF catalyst showed the best catalytic activity of soot oxidation, good stability and water resistance. Besides, the addition of NO and H 2 O was helpful to improve the catalytic performance for soot oxidation, when 10 % H 2 O and 800 ppm NO were mixed into 20 %O 2 /N 2 atmosphere, the T 10 , T 50 and T 90 values could decrease to 299 °C, 344 °C and 389 °C, respectively.

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NO2 catalytic formation, consumption, and efflux in various types of diesel particulate filter

Cited by 18 publications

References 43 publications

Theoretical analyses of NH₃‐SCR reaction‐mass transfer over Cu‐ZSM‐5

Theoretical analyses of NH₃‐SCR reaction‐mass transfer over Cu‐ZSM‐5

An Optical-Based Sensor for Automotive Exhaust Gas Temperature Measurement

Fe‐Ce Composite Oxide Catalysts Supported on 3D Nickel Foam for Catalytic Oxidation of Soot

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NO2 catalytic formation, consumption, and efflux in various types of diesel particulate filter

Cited by 18 publications

References 43 publications

Theoretical analyses of NH3‐SCR reaction‐mass transfer over Cu‐ZSM‐5

Theoretical analyses of NH3‐SCR reaction‐mass transfer over Cu‐ZSM‐5

An Optical-Based Sensor for Automotive Exhaust Gas Temperature Measurement

Fe‐Ce Composite Oxide Catalysts Supported on 3D Nickel Foam for Catalytic Oxidation of Soot

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Theoretical analyses of NH₃‐SCR reaction‐mass transfer over Cu‐ZSM‐5

Theoretical analyses of NH₃‐SCR reaction‐mass transfer over Cu‐ZSM‐5