Washcoating of catalytic particulate filters studied by time-resolved X-ray tomography

被引：22

作者：

Blaz, Miroslav ^{[1
]}

Zalud, Milan ^{[1
]}

Koci, Petr ^{[1
]}

York, Andrew ^{[2
]}

Schleputz, Christian M. ^{[3
]}

Stampanoni, Marco ^{[3
,4
]}

Novak, Vladimir ^{[3
]}

机构：

[1] Univ Chem & Technol, Dept Chem Engn, Tech 5, Prague 16628, Czech Republic

[2] Johnson Matthey Technol Ctr, Blounts Court Rd, Reading RG4 9NH, Berks, England

[3] Paul Scherrer Inst, Swiss Light Source, Forschungsstr 111, CH-5232 Villigen, Switzerland

[4] Swiss Fed Inst Technol, Inst Biomed Engn, Gloriastr 35, CH-8092 Zurich, Switzerland

来源：

CHEMICAL ENGINEERING JOURNAL | 2021年 / 409卷

基金：

欧盟地平线“2020”;

关键词：

XRT; Catalyst; Filter; Washcoating; Automotive exhaust gas aftertreatment;

D O I：

10.1016/j.cej.2020.128057

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this paper we introduce a new application of time-resolved X-ray tomography (XRT) to imaging of the washcoating process in catalytic monolith filters with a honeycomb structure (DPF, GPF). The method is applied to several alumina washcoats with different particle size distributions deposited on a cordierite substrate. The results bring new insights into the drying dynamics of the porous filter wall as well as the on-wall catalyst layer, including the process of layer shrinking and cracking. The XRT results are supplemented by cross-section scanning electron microscopy images and mercury intrusion porosimetry of the final structures. In addition to the statistical analysis of the washcoat distribution, the impact of the washcoat structure on filter pressure loss is determined by experiments.

引用

页数：14

共 58 条

[1]

Aderhold A.G.H.D., 2003, Patent, Patent No. [6599570, US6599570]

[2]

Allansson R., 2002, SAE TECHNICAL PAPERS

[3] Trainable Weka Segmentation: a machine learning tool for microscopy pixel classification [J].

Arganda-Carreras, Ignacio ;

Kaynig, Verena ;

Rueden, Curtis ;

Eliceiri, Kevin W. ;

Schindelin, Johannes ;

Cardona, Albert ;

Seung, H. Sebastian .

BIOINFORMATICS, 2017, 33 (15) :2424-2426

[4] Monolithic reactors for environmental applications -: A review on preparation technologies [J].

Avila, P ;

Montes, M ;

Miró, EE .

CHEMICAL ENGINEERING JOURNAL, 2005, 109 (1-3) :11-36

[5] Recent advances in automotive catalysis for NOx emission control by small-pore microporous materials [J].

Beale, A. M. ;

Gao, F. ;

Lezcano-Gonzalez, I. ;

Peden, C. H. F. ;

Szanyi, J. .

CHEMICAL SOCIETY REVIEWS, 2015, 44 (20) :7371-7405

[6] Numerical investigation of the impact of washcoat distribution on the filtration performance of gasoline particulate filters [J].

Belot, Igor ;

Vidal, David ;

Votsmeier, Martin ;

Hayes, Robert E. ;

Bertrand, Francois .

CHEMICAL ENGINEERING SCIENCE, 2020, 221

[7] Real-time 3D imaging of Haines jumps in porous media flow [J].

Berg, Steffen ;

Ott, Holger ;

Klapp, Stephan A. ;

Schwing, Alex ;

Neiteler, Rob ;

Brussee, Niels ;

Makurat, Axel ;

Leu, Leon ;

Enzmann, Frieder ;

Schwarz, Jens-Oliver ;

Kersten, Michael ;

Irvine, Sarah ;

Stampanoni, Marco .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2013, 110 (10) :3755-3759

[8] Three-way catalyst emissions control technologies for spark-ignition engines - recent trends and future developments [J].

Collins, Neil R. ;

Twigg, Martyn V. .

TOPICS IN CATALYSIS, 2007, 42-43 (1-4) :323-332

[9] Insights into Automotive Particulate Filters using Magnetic Resonance Imaging [J].

Cooper, J. D. ;

Ramskill, N. P. ;

Sederman, A. J. ;

Gladden, L. F. ;

Tsolakis, A. ;

Stitt, E. H. ;

York, A. P. E. .

JOHNSON MATTHEY TECHNOLOGY REVIEW, 2020, 64 (02) :165-179

[10] Towards the rationalization of the washcoating process conditions [J].

Cristiani, Cinzia ;

Visconti, Carlo Giorgio ;

Finocchio, Elisabetta ;

Stampino, Paola Gallo ;

Forzatti, Pio .

CATALYSIS TODAY, 2009, 147 :S24-S29

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