Paper-structured catalyst for catalytic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" display="inline" overflow="scroll"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mi mathvariant="normal">NO</mml:mi></mml:mrow></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> removal from combustion exhaust gas

Ishihara, Hirotake; Koga, Hirotaka; Kitaoka, Takuya; Wariishi, Hiroyuki; Tomoda, Akihiko; Suzuki, Ryō

doi:10.1016/j.ces.2009.05.042

Cited by 17 publications

(1 citation statement)

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“…As an alternative, our group proposed to use the Responsible editor: Philippe Garrigues Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-018-3439-3) contains supplementary material, which is available to authorized users. mentioned ceramic papers as suitable materials to conform flexible structured catalysts and diesel filters (Tuler et al 2014;Koga et al 2006Koga et al , 2008aKoga et al , b, 2009Ishihara et al 2010). Ceramic papers present suitable mechanical properties to resist assays from a test bench in which they were placed inside a metal housing, at the exhaust pipe outlet of a Corsa 1.7 diesel vehicle (Tuler et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Novel ceramic paper structures for diesel exhaust purification

Leonardi

Tuler

Gaigneaux

et al. 2018

Environ Sci Pollut Res

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The catalytic combustion of diesel soot is addressed with flexible and structured Bpaper catalysts^. Two different series of catalysts were prepared either by drip impregnation or by a spray method to deposit a mixture of Co, Ba, and K or a mixture of Co and Ce onto SiO 2 -Al 2 O 3 ceramic paper matrixes. In every case, CeO 2 nanoparticles were added to bind the ceramic fibers. SEM images showed that the impregnation method generated catalytic particles concentrated as large chunks (> 10 μm), mainly at ceramic fiber crossings, whereas the spray method produced smaller catalytic particles (< 1 μm) well distributed throughout the ceramic paper. Besides, Co-Ba-K particles appeared better dispersed on the surface of ceramic fibers than Co-Ce due to the presence of K. Additionally, FTIR spectra showed the formation of O 2 2− and O 2 − species associated with CeO 2 (binder) on the samples containing potassium which gave the Co-Ba-K-ceramic paper good catalytic properties, thus making the Co-Ba-K drop impregnated the best catalyst both considering activity and stability. Successive temperature programmed oxidation (TPO) runs up to 700 °C caused the formation of cobalt silicates in the catalytic ceramic paper prepared by the spray method, as indicated by TPR. The formation of these species was probably favored by the smaller size of cobalt particulates and their higher dispersion in the catalysts prepared by the spray method. This provoked the partial loss of the redox properties of Co 3 O 4 . TPR experiments also indicated the formation of BaCoO 3 in Ba-containing ceramic paper, which could help in maintaining the catalyst activity after several TPO runs through the capacity of this mixed perovskite-type oxide to trap and release NO x .

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Section: Introductionmentioning

confidence: 99%

Novel ceramic paper structures for diesel exhaust purification

Leonardi

Tuler

Gaigneaux

et al. 2018

Environ Sci Pollut Res

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In Situ Synthesis of Platinum Nanocatalysts on a Microstructured Paperlike Matrix for the Catalytic Purification of Exhaust Gases

Koga

Umemura

Tomoda³

et al. 2010

ChemSusChem

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The successful in situ synthesis of platinum nanoparticles (PtNPs) on a microstructured paperlike matrix, comprising ceramic fibers as main framework and zinc oxide whiskers as selective support for the PtNPs, is reported. The as-prepared hybrid material (PtNPs@ZnO "paper") resembles ordinary paper products because it is flexible, lightweight, and easy to handle. In the catalytic reduction of nitrogen oxide (NO(x)) with propene for exhaust gas purification, the PtNPs@ZnO paper demonstrates a high catalytic performance at a low reaction temperature, with one-third the dosage of precious platinum compared to conventional platinum-loaded honeycomb catalysts. These results imply that the combination of easily synthesized PtNPs and a unique fiber-network microstructure can provide excellent performances, promoting the effective transport of heat and reactants to the active sites of the platinum nanocatalysts. Thus, PtNPs@ZnO materials with paperlike practical aspects are promising catalytic materials for efficient NO(x) gas purification.

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Fuel Cells with Biofuels

Shiratori

Quang-Tuyen

2016

Green Energy and Technology

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Paper-structured catalyst for catalytic NOx removal from combustion exhaust gas

Cited by 17 publications

References 25 publications

Novel ceramic paper structures for diesel exhaust purification

Novel ceramic paper structures for diesel exhaust purification

In Situ Synthesis of Platinum Nanocatalysts on a Microstructured Paperlike Matrix for the Catalytic Purification of Exhaust Gases

Fuel Cells with Biofuels

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