Investigation of Soot Oxidation Carried out on Membrane Filters Composed of SiC Nanoparticles

Nakamura, Keisuke; Oki, Hiroshi; Sanui, Ryoko; Kinoshita, Yutaro; Hidaka, Nobuhiro; Tanaka, Masamichi; Matsumoto, Hiroaki; Hanamura, Katsunori

doi:10.4271/2015-01-2015

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…The apparent density of aggregates was estimated according to the bulk density of Al2O3 and the expected packing fraction ε1 of the alumina nanoparticles that composed the alumina aggregates. Here, the bulk density of the alumina was obtained from a databook as 3.95 g/cm 3 , and the packing fraction ε1 of the alumina nanoparticles in the aggregates was calculated as 74%, assuming a hexagonal close-packed structure of nanoparticles in the aggregates. Consequently, the apparent density ρ'Al2O3 was 2.92 g/cm 3 .…”

Section: Permeability Of Aggregate Cake Layer Obtained Using Cell Modelmentioning

confidence: 99%

“…Here, the bulk density of the alumina was obtained from a databook as 3.95 g/cm 3 , and the packing fraction ε1 of the alumina nanoparticles in the aggregates was calculated as 74%, assuming a hexagonal close-packed structure of nanoparticles in the aggregates. Consequently, the apparent density ρ'Al2O3 was 2.92 g/cm 3 . The packing fraction ε of the membrane was calculated by substituting these values into Eq.…”

Section: Permeability Of Aggregate Cake Layer Obtained Using Cell Modelmentioning

confidence: 99%

“…As a method for avoiding the soot deposition in the surface pores, the fabrication of a membrane layer on the surface of the DPF was proposed (2)(3)(4) . A schematic of the DPF with a membrane layer is shown in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

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Soot Trapping by High-permeability Porous Membrane Filter Made of Aggregates of Alumina Nanoparticles

Nakajima

Sanui

Hanamura

2017

IJAE

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A new diesel particulate filter (DPF) with a highly porous membrane made of alumina submicron particles, which are aggregates of alumina nanoparticles, was proposed to eliminate the radical increase in pressure drop caused by the soot accumulation in surface pores at the beginning of soot trapping and to improve the initial filtration efficiency of the DPF. The alumina membrane was manufactured by introducing particles-suspended nitrogen gas into the conventional DPF. The particle size of alumina and the particle-carrying gas velocity, which are significant parameters to determine the permeability of the layer, were optimized to make a low pressure drop membrane.

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Section: Permeability Of Aggregate Cake Layer Obtained Using Cell Modelmentioning

confidence: 99%

Section: Permeability Of Aggregate Cake Layer Obtained Using Cell Modelmentioning

confidence: 99%

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Soot Trapping by High-permeability Porous Membrane Filter Made of Aggregates of Alumina Nanoparticles

Nakajima

Sanui

Hanamura

2017

IJAE

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Simulation of soot particle deposition inside porous walls based on lattice Boltzmann method for diesel particulate filter

Yan

Kong

et al. 2021

Journal of Environmental Chemical Engineering

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Development of Membrane filter Made of Alumina and Silver-Palladium Particles for High-Filtration Efficiency, Low-Pressure Drop and Low-Soot Oxidation Temperature

Suteerapongpun

Kitagawa

Srilomsak

et al. 2020

IJAE

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A membrane filter was coated on conventional filter made of SiC. The first and second layers consisted of aluminaparticles with diameter of 0.5 and 1.5 micrometer, respectively; because small particles have higher filtration efficiency to prevent soot penetration into the membrane layer while large particles with a higher permeability can achieve lower pressure drop. Nanoscale silverpalladium particles were dispersedly deposited on the surface of the alumina particles layer as a top layer. The novel membrane filter demonstrated lower pressure drop while keeping high trapping efficiency during the soot trapping and presented lower soot oxidation temperature compared to the conventional filter.

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Investigation of Soot Oxidation Carried out on Membrane Filters Composed of SiC Nanoparticles

Cited by 5 publications

References 10 publications

Soot Trapping by High-permeability Porous Membrane Filter Made of Aggregates of Alumina Nanoparticles

Soot Trapping by High-permeability Porous Membrane Filter Made of Aggregates of Alumina Nanoparticles

Simulation of soot particle deposition inside porous walls based on lattice Boltzmann method for diesel particulate filter

Development of Membrane filter Made of Alumina and Silver-Palladium Particles for High-Filtration Efficiency, Low-Pressure Drop and Low-Soot Oxidation Temperature

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