Copper-chromite glass fiber catalyst and its performance in the test reaction of deep oxidation of toluene in air

Zazhigalov, S.V.; Elyshev, Andrey; Лопатин, С. А.; Larina, T. V.; Cherepanova, Svetlana V.; Микенин, П. Е.; Pisarev, D. A.; Baranov, D. V.; Zagoruiko, Andrey N.

doi:10.1007/s11144-016-1089-3

Cited by 19 publications

(3 citation statements)

References 67 publications

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“…Ni foam, [30] cordierite honeycomb, [31] zeolite‐based honeycomb, [32] and honeycomb monolith [33] are fit for catalyst carriers. The corrugated silica carrier (CSC) that is constructed by layer upon layer of corrugated grid and flat grid possesses several advantages such as great surface area, low density and high thermal stability [34] . Herein, RE‐MnO 2 particles were deposited on CSC surfaces by using Ce and Sm as RE dopants.…”

Section: Introductionmentioning

confidence: 99%

“…The corrugated silica carrier (CSC) that is constructed by layer upon layer of corrugated grid and flat grid possesses several advantages such as great surface area, low density and high thermal stability. [34] Herein, RE-MnO 2 particles were deposited on CSC surfaces by using Ce and Sm as RE dopants. Although RE has been widely combined with MnO 2 to promote the VOC degradation, [22,23] the different effect mechanisms of RE doping and RE oxide still remain unknown.…”

Section: Introductionmentioning

confidence: 99%

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Rare Earth Dopants Enhance Thermocatalytic Activity of Manganese Oxides on Corrugated Silica Carriers for Formaldehyde Degradation

Qiang,

Yu,

Shu

et al. 2024

ChemistrySelect

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The development of high efficiency thermocatalysts remains a great challenge for gaseous formaldehyde elimination. Herein, rare earth‐doped manganese dioxide (RE‐MnO2) particles with sizes of approximately 200 nm were deposited on corrugated silica carrier (CSC) by using cerium or samarium as dopants. One part of rare earth ions in RE‐MnO2/CSC were substituted for the manganese ions in α‐MnO2, and the other part existed in the form of cerium oxide or samarium oxide. RE‐MnO2/CSC exhibited better thermocatalytic activity than MnO2/CSC. The formaldehyde removal efficiency over RE‐MnO2/CSC reached nearly 100 % even after cycle tests of 5 times. Both the cerium and samarium doping accelerated HCHO oxidation via increasing lattice oxygen and Mn4+ amounts, improving low‐temperature redox properties, and reducing apparent activation energy. Notably, the RE oxides in the catalysts played different roles in HCHO degradation. Samarium oxide did not possess thermocatalytic activity, while cerium oxide in RE‐MnO2/CSC participated directly in the formaldehyde degradation via the CeO2↔Ce2O3 redox reaction and facilitated the oxidation of Mn2O3 into MnO2. This work revealed the effect mechanisms of RE doping and RE oxide on the enhanced thermocatalytic activity, and provided a novel viewpoint to develop RE‐doped catalysts for formaldehyde removal.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rare Earth Dopants Enhance Thermocatalytic Activity of Manganese Oxides on Corrugated Silica Carriers for Formaldehyde Degradation

Qiang,

Yu,

Shu

et al. 2024

ChemistrySelect

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“…The use of SiO 2 as secondary support provides the rise of surface area up to 20-30 m 2 /g, giving the way to introduce higher amounts (up to 8-10 wt%) of active components into GFCs [3][4][5]. Though, such mass loading looks sufficient for many practical applications in catalysis, nevertheless, there is the need in the fibrous supports with higher surface area.…”

mentioning

confidence: 99%

Glass fiber supports modified by layers of silica and carbon nanofibers

Popov¹,

Zazhigalov²,

Ларина³

et al. 2017

Catalysis for Sustainable Energy

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Abstract:The new multi-layered composite was manufactured by deposition of the carbon nanofibers (CNF) at the surface of the glass-fiber fabric, which is pre-modified by application of additional external layers of NiO and porous silica. Carbonization of synthesized catalytic template was performed at 450 °C in propanebutane media at ambient pressure. CNF was deposited in amount of ~130% of initial template mass or 65 g per g of nickel, the specific surface area of the material is ~100 m 2 /g. The synthesized material has high mechanical strength, high hydrophobicity and strong bonding between CNF and glass-fiber support. The synthesis method is technologically simple, inexpensive and easily scalable. It is possible to manufacture such material in various solid shapes, using the flexibility of the primary glass-fiber support; in particular, it may be used for production of the mechanically self-sustainable catalytic cartridges with required shape and internal geometry using no additional structuring elements.

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Dehydrogenation of ethanol over carbon-supported Cu–Co catalysts modified by catalytic chemical vapor deposition

Пономарева

Krasnikova

Егорова

et al. 2017

Reac Kinet Mech Cat

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Copper-chromite glass fiber catalyst and its performance in the test reaction of deep oxidation of toluene in air

Cited by 19 publications

References 67 publications

Rare Earth Dopants Enhance Thermocatalytic Activity of Manganese Oxides on Corrugated Silica Carriers for Formaldehyde Degradation

Rare Earth Dopants Enhance Thermocatalytic Activity of Manganese Oxides on Corrugated Silica Carriers for Formaldehyde Degradation

Glass fiber supports modified by layers of silica and carbon nanofibers

Dehydrogenation of ethanol over carbon-supported Cu–Co catalysts modified by catalytic chemical vapor deposition

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