The Hydrothermal Stability of Paper-Like Ceramic Fiber and Conventional Honeycomb-Type Cordierite Substrates Washcoated with Cu-MFI and V2O5/TiO2 Catalysts for the Selective Reduction of NOx by NH3

Kwon, Hyuk Jae; Kim, Young Jin; Nam, In−Sik; Jung, Sang Min; Lee, Ju-Hyung

doi:10.1007/s11244-010-9470-3

Cited by 14 publications

(7 citation statements)

References 21 publications

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“…To address these problems, a catalytic honeycomb CFs have been utilised. However, the automotive catalysts coated on the CF have been shown to be easily sintered and degraded during regeneration with high temperature [10][11][12] . Therefore, it is necessary to develop a lter that can be easily regenerated and simultaneously removes PM and VOC operated under ambient conditions.…”

Section: Full Textmentioning

confidence: 99%

Long-lifetime water-washable ceramic catalyst filter for air purification

Kwon

Yang

Koo

et al. 2022

Preprint

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Particulate matter (PM) and volatile organic compounds (VOCs) are recognised as hazardous air pollutants threatening human health1,2. Disposable filters are generally used for air purification despite frequent replacement and waste generation problems. However, the development of a novel regenerable and robust filter for long-term use is a huge challenge. Here, we report on a new class of facile water-washing regenerable ceramic catalyst filters (CCFs), developed to simultaneously remove PM (> 95%) and VOCs (> 82%) in single-pass by coating the inner and outer filter channels with an inorganic membrane and a Cu2O/TiO2 photocatalyst, respectively. The CCFs reveal four-fold increase in the maximum dust loading capacity (approximately 20 g/L) in relation to conventional filters (5 g/L)3, and can be reused after ten regeneration capability with simple water washing retaining initial PM and VOC removal performances. Thus, the CCFs can be well-suited for indoor and outdoor air purification for 20 years, which shows a huge increase in lifetime compared to the six-month lifespan of conventional filters. Finally, we believe that the development and implementation of CCFs for air purification can open new avenues for sustainable technology through renewability and zero-waste generation.

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Section: Full Textmentioning

confidence: 99%

Long-lifetime water-washable ceramic catalyst filter for air purification

Kwon

Yang

Koo

et al. 2022

Preprint

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“…However, fiber length constitutes a limitation and ceramic fibers of at least 600 µm of length are needed. Most generally used ceramic fibers are a mixture of SiO2 (50%) and Al2O3 (48%) and they are frequently denoted only as ceramic fibers, although some papers report the use of fiber rods of mullite (3Al2O3.2SiO2) [84] or glass fiber [85].…”

Section: Ceramic Papersmentioning

confidence: 99%

“…The kind and amount of ceramic binder should be selected in order to obtain a strong but flexible structure. In general, most published papers employ alumina sol as a binder for enhancing the physical strength of the catalyst paper [38,84,[86][87][88][89], although some papers use TiO2 sol [90,91] or SiO2 sol [92]. Our group is currently studying the use of borate compounds as binder to enhance the mechanical properties of ceramic papers.…”

Section: Ceramic Papersmentioning

confidence: 99%

Structured Catalysts for Soot Combustion for Diesel Engines

Banús¹,

Ulla²,

Miró³

et al. 2013

Diesel Engine - Combustion, Emissions and Condition Monitoring

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“…15 To increase the mechanical resistance, different binder agents are used, which allow the joining of the fibers and give stiffness and flexibility to the arrangement. This kind of substrate has been used for many types of reactions such as catalytic combustion of soot; 14,15 steam reforming of hydrocarbons; 16,17 methane dry reforming; 18 toluene removal; 19 reduction of 4-nitrophenol; 20 selective catalytic reduction of NO x with C 3 H 6 , 21 NH 3 , 22 and CH 4 ; 23 and methanol reforming, 24 among others.…”

Section: Introductionmentioning

confidence: 99%

“…This kind of substrate has been used for many types of reactions such as catalytic combustion of soot; , steam reforming of hydrocarbons; , methane dry reforming; toluene removal; reduction of 4-nitrophenol; selective catalytic reduction of NO x with C 3 H 6 , NH 3 , and CH 4 ; and methanol reforming, among others.…”

Section: Introductionmentioning

confidence: 99%

New Formulations of Ni-Containing Ceramic Papers to Enhance the Catalytic Performance for the Oxidative Dehydrogenation of Ethane

Bortolozzi

Banús

Milt

et al. 2014

Ind. Eng. Chem. Res.

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Ceramic papers composed of silica−alumina fibers structured using colloidal suspensions as binders constitute interesting materials to be used as flexible supports of catalytic materials. The deposition of Ni as the active ingredient together with Zr or Ce promoters resulted in active and selective structured catalysts for the oxidative dehydrogenation of ethane; these structured catalysts also exhibited acceptable mechanical properties. The employed binder agents (nanoparticles of ceria, zirconia, or yttria-stabilized zirconia) homogeneously covered the fiber surface, contributing to the dual function of building a threedimensional arrangement and favoring the anchoring of the catalytic formulations. The prepared papers showed nickel oxide as the active phase. The incorporation of cerium or zirconium as promoters enhanced the catalytic properties. The former element mainly produced an increase in ethane conversion, whereas the latter markedly improved ethylene selectivity. In both cases, an ethylene productivity was obtained in the promoted systems which was higher than that in the unpromoted samples. It is likely that the formation of the solid solutions Ni−Ce−O and Ni−Zr−O, as suggested by X-ray diffraction and laser Raman spectroscopy analyses, plays an important role in these effects. The best catalyst was the one containing nickel as the active phase, Ce as the promoter, and ZrY as the binder agent, for which ethylene productivity at 400 °C was ca. 513 g ethylene/(kg cat h). The binder agent addition was necessary to join the fibers, thus improving the mechanical properties of the papers, but they also affected the catalytic performance through the coverage of ceramic fibers and the resulting interaction with the catalytic compounds. The performed tensile index tests showed that the colloidal suspension of ceria produced papers with mechanical properties better than those of zirconia or zirconia−yttria because they exhibited greater resistance and flexibility.

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The Hydrothermal Stability of Paper-Like Ceramic Fiber and Conventional Honeycomb-Type Cordierite Substrates Washcoated with Cu-MFI and V2O5/TiO2 Catalysts for the Selective Reduction of NOx by NH3

Cited by 14 publications

References 21 publications

Long-lifetime water-washable ceramic catalyst filter for air purification

Long-lifetime water-washable ceramic catalyst filter for air purification

Structured Catalysts for Soot Combustion for Diesel Engines

New Formulations of Ni-Containing Ceramic Papers to Enhance the Catalytic Performance for the Oxidative Dehydrogenation of Ethane

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