Research Progress on Metal Oxides for the Selective Catalytic Reduction of NOx with Ammonia

Wang, Lanyi; Zhou, Shian; You, M. James; Yu, Di; Zhang, Chunlei; Gao, Siyu; Yu, Xin; Zhang, Zhao

doi:10.3390/catal13071086

Cited by 8 publications

(1 citation statement)

References 133 publications

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“…Metal oxides can be doped with other metals to increase their surface area and reaction sites, which improves the catalyst's ability to catalyze various reactions. Because doping affects the characteristics of metal oxides and demonstrated outstanding catalytic activity in several catalytic reactions [19][20][21][22]. Thus, in response to the growing demand for synthetic and environmental applications, silver oxide-tin oxide nanocomposite was prepared to improve catalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

SnAg2O3-Coated Adhesive Tape as a Recyclable Catalyst for Efficient Reduction of Methyl Orange

Akhtar,

Alhaj,

Bakhsh

et al. 2023

Materials

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Silver oxide-doped tin oxide (SnAg2O3) nanoparticles were synthesized and different spectroscopic techniques were used to structurally identify SnAg2O3 nanoparticles. The reduction of 4-nitrophenol (4-NP), congo red (CR), methylene blue (MB), and methyl orange (MO) was studied using SnAg2O3 as a catalyst. Only 1.0 min was required to reduce 95% MO; thus, SnAg2O3 was found to be effective with a rate constant of 3.0412 min−1. Being a powder, SnAg2O3 is difficult to recover and recycle multiple times. For this reason, SnAg2O3 was coated on adhesive tape (AT) to make it recyclable for large-scale usage. SnAg2O3@AT catalyst was assessed toward MO reduction under various conditions. The amount of SnAg2O3@AT, NaBH4, and MO was optimized for best possible reduction conditions. The catalyst had a positive effect since it speed up the reduction of MO by adding more SnAg2O3@AT and NaBH4 as well as lowering the MO concentration. SnAg2O3@AT totally reduced MO (98%) in 3.0 min with a rate constant of 1.3669 min−1. These findings confirmed that SnAg2O3@AT is an effective and useful catalyst for MO reduction that can even be utilized on a large scale for industrial purposes.

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Section: Introductionmentioning

confidence: 99%

SnAg2O3-Coated Adhesive Tape as a Recyclable Catalyst for Efficient Reduction of Methyl Orange

Akhtar,

Alhaj,

Bakhsh

et al. 2023

Materials

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Nitrogen Fixation by Simple Gling Arc Plasma Reactor at Elevated Pressure for Synthesis of Aqueous Nitrogen Fertilizer

Angineni,

Reddy,

Anga

et al. 2024

Plasma Processes & Polymers

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Plasma technology for nitrogen fixation offers a sustainable alternative to traditional fossil fuel‐based methods for fertilizer production. A novel gliding arc plasma reactor is studied for its potential in nitrate fertilizer production, examining its performance across varying gas flow rates, compositions, and pressures (0–2 bar). Results show increased nitric acid (HNO3) production with higher pressure. The reactor achieves a NOx production rate of 10.2 g/h and an HNO3 production rate of 8.83 g/h, with an energy cost of 2.9 MJ/mol of nitrogen. A selectivity of 84% toward NO2 at 2 bar pressure highlights the reactor's efficiency in nitrogen utilization, enhancing its potential for practical applications.

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Preparation and Application of Slag‐Based Catalyst for Steelmaking

Zhang,

Wang,

Song

et al. 2024

steel research int.

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This study focuses on utilizing ground granulated blast furnace slag (GGBS) from a steel plant as the main raw material, with water and calcium‐based montmorillonite as binders, with manganese and alkali metal nitrates (Na, K, Mg, Ca). A series of supported denitration catalysts are prepared using the equal volume impregnation method. These catalysts are then employed in the selective catalytic reduction process to investigate their impact on denitration effectiveness. Furthermore, the mechanism of low‐temperature denitration in selective catalytic reduction is analyzed by combining catalyst activity tests and characterization techniques. The activity of catalysts is assessed through Fourier transform infrared spectrometer (FT‐IR), X‐Ray diffraction (XRD), and search engine marketing (SEM) characterization tests, along with examining its denitration and sulfur resistance capabilities to determine the denitration mechanism. Experimental results indicate that Mn–Mg/GGBS exhibit the most efficient low‐temperature denitrification effect, and it demonstrates certain sulfur resistance with a 5% Mn loading and a 3% second active component. Introducing Ce as the third active component further enhances the sulfur resistance of Mn–Mg–Ce/GGBS when loaded at 1%.

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Research Progress on Metal Oxides for the Selective Catalytic Reduction of NOx with Ammonia

Cited by 8 publications

References 133 publications

SnAg2O3-Coated Adhesive Tape as a Recyclable Catalyst for Efficient Reduction of Methyl Orange

SnAg2O3-Coated Adhesive Tape as a Recyclable Catalyst for Efficient Reduction of Methyl Orange

Nitrogen Fixation by Simple Gling Arc Plasma Reactor at Elevated Pressure for Synthesis of Aqueous Nitrogen Fertilizer

Preparation and Application of Slag‐Based Catalyst for Steelmaking

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