Tourmaline-Modified FeMnTiOx Catalysts for Improved Low-Temperature NH3-SCR Performance

Wang, Fei; Xie, Zhouqing; Liang, Jinsheng; Fang, Baizeng; Piao, Yuang; Hao, Min; Wang, Zishuo

doi:10.1021/acs.est.9b02620

Cited by 118 publications

(60 citation statements)

References 51 publications

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“…The presented research results suggest that poly(oxymethylene) glass fiber composites, especially those with a small diameter (about 10 µm), can be successfully used for components with complex shapes that are subject to changes in dynamic loads changing over time, ensuring very good strength parameters. Designing, producing, and testing new materials with increased mechanical performance is extremely important because it affects not only the construction sector as the introduction of new advanced materials to the market, but the extension of the explant time limits the material production, which indirectly also affects the environment, which is immeasurable charged in production processes emitting harmful gases into the atmosphere [48][49][50].…”

Section: Discussionmentioning

confidence: 99%

Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

et al. 2019

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The paper evaluated the possibility of potential reinforcing of poly(oxymethylene) (POM) by glass fiber and the influence of fiberglass addition on mechanical properties under dynamic load. Four types of composites with glass fiber and another four with carbon fiber were produced. The fiber content ranged from 5% to 40% by weight. In the experimental part, the basic mechanical and fatigue properties of POM-based composites were determined. The impact of water absorption was also investigated. The influence of fiber geometry on the mechanical behavior of fiber-reinforced composites of various diameters was determined. To refer to the effects of reinforcement and determine the features of the structure scanning electron microscopy images were taken. The results showed that the addition of up to 10 wt %. fiberglass increases the tensile properties and impact strength more than twice, the ability to absorb energy also increases in relation to neat poly(oxymethylene). Fiber geometry also has a significant impact on the mechanical properties. The study of the mechanical properties at dynamic loads over time suggests that composites filled with a smaller fiber diameter have better fatigue properties.as well as heating fabrics powered by electricity [2][3][4][5]. Many scientific papers present the advantages of introducing carbon fibers to thermoplastic materials. Carbon fibers are not only lightweight or provide very good strength properties, but also have a positive effect on tribological properties, and therefore they also can be successfully used as a reinforcement in ceramic matrices [6][7][8][9][10][11][12][13][14][15][16][17].Carbon fibers are not only one fiber introduced in composites which provide good mechanical properties. Currently, about 60% of produced glass fibers are applied to make composites on polymeric matrices, even though they have insignificantly lower physical and mechanical properties than carbon fibers. Glass fibers are characterized by low elongation and high modulus of elasticity. Attention should be paid to good dielectric properties, namely the fibers have low values of relative permittivity and dielectric loss factor. A valuable advantage of glass fibers is the very good wettability of the polymers, and hence the possibility of forming a strong bond at the polymer/glass interface. The mechanical properties of fiber-reinforced composites improve as the length of reinforcing fibers increase, while the strength of a single glass fiber depends on its diameter. If the fiber diameter is larger, there is a higher probability of material defects and damages describe in literature as micronotches and microcracks [18].Many groups of researchers conduct research on polymer composites with glass fiber. It has been revealed that glass fibers successfully strengthen polymers causing better strength properties, higher resistance to creep, and fatigue, as well as provide greater dimensional stability [19][20][21][22].POM is a thermoplastic material with a high degree of crystallinity. This polymer is obta...

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Section: Discussionmentioning

confidence: 99%

Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

et al. 2019

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“…Meanwhile, the treatment and recycling utilization of iron tailings have always been a problem. The comprehensive utilization is becoming one of the hot social topics all over the world [34][35][36][37]. It is worth noting that the main chemical components of typical iron tailings are similar to several natural mineral materials reported in the literature [38].…”

Section: Introductionmentioning

confidence: 71%

Fabrication and Thermal Properties of Capric Acid/Calcinated Iron Tailings/Carbon Nanotubes Composite as Form-Stable Phase Change Materials for Thermal Energy Storage

Liu

Zhang

et al. 2019

Minerals

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In this study, a novel form-stable phase change material (FSPCM) consisting of calcination iron tailings (CIT), capric acid (CA), and carbon nanotubes (CNT) was prepared using a simple direct melt impregnation method, and a series of tests have been carried out to investigate its properties. The leakage tests showed that CA can be retained in CIT with a mass fraction of about 20 wt.% without liquid leakage during the phase change process. Moreover, the morphology, chemical structure, and thermal properties of the fabricated composite samples were investigated. Scanning electron microscope (SEM) micrographs confirmed that CIT had a certain porous structure to confine CA in composites. According to the Fourier transformation infrared spectroscope (FTIR) results, the CA/CIT/CNT FSPCM had good chemical compatibility. The melting temperature and latent heat of CA/CIT/CNT by differential scanning calorimeter (DSC) were determined as 29.70 • C and 22.69 J/g, respectively, in which the mass fraction of CIT and CNT was about 80 wt.% and 5 wt.%, respectively. The thermal gravity analysis (TGA) revealed that the CA/CIT/CNT FSPCM showed excellent thermal stability above its working temperature. Furthermore, the melting and freezing time of CA/CIT/CNT FSPCM doped with 5 wt.% CNT reduced by 42.86% and 54.55% than those of pure CA, and it showed better heat transfer efficiency. Therefore, based on the above analyses, the prepared CA/CIT/CNT FSPCM is not only a promising candidate material for the application of thermal energy storage in buildings, but it also provides a new approach for recycling utilization of iron tailings.

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“…[1][2][3][4][5][6] Compared with precious metals, nickel and other transition metals are relatively more abundant and following appropriate activation can offer high catalytic activity. [7][8][9][10][11][12] Equally important is the development of high activity catalysts that maintain their activity with time especially at higher processing temperatures.…”

Section: Introductionmentioning

confidence: 99%

Chemical modification in and on single phase [NiO]_0.5[Al₂O₃]_0.5 nanopowders produces “chocolate chip‐like” Ni_x@[NiO]_0.5‐x[Al₂O₃]_0.5 nanocomposite nanopowders

Wang

Sun

et al. 2019

J Am Ceram Soc

Self Cite

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Phase‐pure [NiO]0.5[Al2O3]0.5 spinel nanoparticles (NPs) with limited aggregation were obtained via liquid‐feed flame spray pyrolysis (LF‐FSP) by combusting metalloorganic precursor solutions. Thereafter “chocolate chip‐like” Nix[NiO0.5‐x][Al2O3]0.5 nanoparticles consisting of primary [NiO0.5‐x][Al2O3]0.5 particles with average particle sizes of 40‐60 nm decorated with Ni metal particles (<10 nm in diameter) dispersed on the surface were synthesized by heat treating the spinel NPs at 800°C/7 h in flowing 5% H2:N2 100 mL/min in a fluidized bed reactor. The synthesized materials were characterized using TEM, XRD, FTIR, and TGA/DTA. The Ni depleted areas consist primarily of γ‐Al2O3. The Ni content (800°C) was determined by TGA to be ≈11.3 wt.% based on TGA oxidation behavior. The successful synthesis of such nanocomposites with limited aggregation on a high temperature support provides a facile route to synthesize well‐defined NP catalysts. This work serves as a baseline study for an accompanying paper, wherein thin, flexible, dense films made from these same NPs are used as regenerable catalysts for carbon nanotube syntheses.

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Tourmaline-Modified FeMnTiO_x Catalysts for Improved Low-Temperature NH₃-SCR Performance

Cited by 118 publications

References 51 publications

Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

Fabrication and Thermal Properties of Capric Acid/Calcinated Iron Tailings/Carbon Nanotubes Composite as Form-Stable Phase Change Materials for Thermal Energy Storage

Chemical modification in and on single phase [NiO]_0.5[Al₂O₃]_0.5 nanopowders produces “chocolate chip‐like” Ni_x@[NiO]_0.5‐x[Al₂O₃]_0.5 nanocomposite nanopowders

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Tourmaline-Modified FeMnTiOx Catalysts for Improved Low-Temperature NH3-SCR Performance

Cited by 118 publications

References 51 publications

Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

Fabrication and Thermal Properties of Capric Acid/Calcinated Iron Tailings/Carbon Nanotubes Composite as Form-Stable Phase Change Materials for Thermal Energy Storage

Chemical modification in and on single phase [NiO]0.5[Al2O3]0.5 nanopowders produces “chocolate chip‐like” Nix@[NiO]0.5‐x[Al2O3]0.5 nanocomposite nanopowders

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Tourmaline-Modified FeMnTiO_x Catalysts for Improved Low-Temperature NH₃-SCR Performance

Chemical modification in and on single phase [NiO]_0.5[Al₂O₃]_0.5 nanopowders produces “chocolate chip‐like” Ni_x@[NiO]_0.5‐x[Al₂O₃]_0.5 nanocomposite nanopowders