Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(8), P. 6062 - 6127

Published: April 8, 2024

Because of their special physicochemical properties, pore-structured metal oxide catalysts are widely used in environmental catalysis, energy chemicals, fuel cells, medicine, and other related fields. In recent years, these oxides have also been increasingly studied the catalytic purification diesel engine exhaust gases. this paper, research progresses preparation methods porous application were reviewed. The advantages disadvantages different for synthesis elaborated, as well mechanism comparison types pollutants. Finally, current issues on development trends summarized discussed. beneficial improving contact efficiency between pollutants, which can enhance catalysts. Meanwhile, intrinsic activity is most fundamental factor determining except structure effects. addition, paper help researchers to deeply understand important effect treatment pollutants provide theoretical guidance design high-efficiency

Language: Английский

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The impact of catalyst structure and morphology on the catalytic performance in NH3-SCR reaction: A review

Fuel, Journal Year: 2023, Volume and Issue: 361, P. 130541 - 130541

Published: Dec. 20, 2023

Language: Английский

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Revealing the active Cu species in Cu/ZSM-5 catalysts for the selective catalytic oxidation of ammonia

Catalysis Today, Journal Year: 2025, Volume and Issue: unknown, P. 115244 - 115244

Published: Feb. 1, 2025

Language: Английский

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Revealing the effects of preparation methods over Ce-MnOx catalysts for soot combustion: Physicochemical properties and catalytic performance

Journal of Industrial and Engineering Chemistry, Journal Year: 2023, Volume and Issue: 121, P. 15 - 26

Published: Jan. 26, 2023

Language: Английский

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Design, Synthesis, and Insights into the Redox Mechanism of Highly Efficient One-Pot Cu-ZSM-5 Catalysts for the Reduction of NO_x by NH₃-SCR at Low Temperatures

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(16), P. 10927 - 10944

Published: Aug. 3, 2023

Cu-ZSM-5 zeolites exhibit promising NH3-SCR activity in a wide temperature window. The current challenges preparing are reducing the cost and simplifying preparation process. one-pot method using Cu-amine complex as template is an excellent strategy for solving above problems. However, still lacking Cu-ZSM-5. In this work, Cu-(EDA)2 developed to prepare Cu-ZSM-5-O catalyst. According fundamental measurements, high dispersion of copper(II) species, appropriate acidity, Cu+ species favor reaction. Among catalysts, Cu1.8-ZSM-5-O shows performance at low temperatures (NO conversion about 87.5% 150 °C N2 selectivity 95% over entire window). boosting catalysts probably assigned abundant [Cu(OH)]+ amounts Cu-ZSM-5-O. Moreover, variable-temperature EPR subsequent computer simulation used first quantify content mechanism (150 °C) on also investigated by situ DRIFT spectra DFT calculations, which mainly follow Eley–Rideal route. A complete catalytic cycle SCR reaction was proposed based calculations. Our results suggest that contribute adsorption activation NH3, thus performance.

Language: Английский

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Study on the purification performance of modified La–Ni based perovskite catalysts co-doped with metal K and Pr for simultaneous removing soot particles and NOx of diesel engine exhaust

Journal of the Energy Institute, Journal Year: 2024, Volume and Issue: 114, P. 101560 - 101560

Published: Feb. 8, 2024

Language: Английский

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Preparation and NH3-SCR catalytic performance of CeTiO catalysts with different pore structures

Journal of Fuel Chemistry and Technology, Journal Year: 2024, Volume and Issue: 52(1), P. 65 - 74

Published: Jan. 1, 2024

Language: Английский

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Research progress on the preparation of transition metal-modified zeolite catalysts and their catalytic performance for the purification of engine exhausts

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(27), P. 16293 - 16328

Published: Jan. 1, 2024

This article focuses on the preparation of transition metal-modified zeolite catalysts and their catalytic performance for purification engine exhausts.

Language: Английский

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

Catalysts, Journal Year: 2023, Volume and Issue: 13(7), P. 1086 - 1086

Published: July 11, 2023

Nitrogen oxides emitted from diesel vehicle exhaust seriously endanger the atmospheric environment and human health, which have attracted people’s attention. Among numerous nitrogen oxide (NOx) removal technologies, photocatalytic of NOx SCR received widespread The treatment technology is a good choice due to its mild reaction conditions low costs. Moreover, NH3-SCR has been widely used in denitration plays an important role controlling emissions. In technology, development high-efficiency catalysts part. This paper summarizes research progress metal for reactions, including V-based catalysts, Mn-based Fe-based Ce-based Cu-based catalysts. Meanwhile, detailed process was also introduced. addition, this describes possible SO2 poisoning mechanism stability Finally, problems prospects were proposed.

Language: Английский

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Insights into the enhanced activity and SO2 resistance of air oxidation treated Mn-Fe doped biochar catalyst in the low-temperature catalytic reduction of NOx with NH3

Fuel, Journal Year: 2023, Volume and Issue: 357, P. 129989 - 129989

Published: Oct. 7, 2023

Language: Английский

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