SCR of NO with CH4 over Fe/Ga2O3-Al2O3 and the mechanism

Wen, Nini; Rui-chao, Lin; Su, Yaxin; Deng, Wei; Zhou, Hao; Zhao, Ben

doi:10.1016/j.jece.2020.105014

Cited by 15 publications

(2 citation statements)

References 55 publications

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“…[42] The reduction peaks at 300-400 °C were attributed to and CoO→Co 0 . [16,43,44] The higher reduction temperature of CP-400 may be attributed to the stronger synergistic interaction between Cr/Co and Fe. [45] The H 2 consumption of the catalysts was MM-400 (9.19 mmol g) > CP-400 (8.44 mmol g −1 ) > CA-400 (8.05 mmol g) > SR-400 (5.83 mmol g −1 ).…”

Section: H 2 -Tprmentioning

confidence: 99%

“…Zhang et al [15] proposed that the electron transfer between Fe and Ag formed a synergistic effect, which further changed the content of Fe and Ag and the morphology present of the catalyst. Wen et al [16] modified Ga 2 O 3 -Al 2 O 3 with Fe and indicated that Fe doping enhanced the NH 3 -SCR activity, N 2 selectivity, and water resistance at medium and high temperature. In addition, Fe 0.1 Co 0.9 Cr 2 O x catalysts with molar ratio (Fe:Co:Cr = 0.1:0.9:2) had been prepared by sol-gel method, and good catalyst activity was achieved at 200 °C.…”

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confidence: 99%

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Effect of Preparation Method on the SCR Activity of Fe‐Doped CoCr Oxide Catalysts

Jin

Zhang

et al. 2023

Part & Part Syst Charact

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Fe‐doped CoCr oxide catalysts are prepared by solid‐phase mixing method, coprecipitation method, mechanical mixing method, and citric acid method, respectively, and their catalytic activity in the selective catalytic reduction of nitrogen oxides with NH3 (NH3‐SCR) is tested. The Fe0.5CoCrOx catalysts prepared by all preparation methods have good water resistance and sulfur resistance when the calcination temperature is 400 °C. Fe0.5CoCrOx prepared by coprecipitation method by calcination at 400 °C (CP‐400) is shown to have the optimum catalyst activity. In addition, the catalysts are characterized by a series of characterizations. The characterization results show that CP‐400 has the largest specific surface area, which makes the active and acidic sites highly dispersed on the surface of CP‐400, resulting in stronger redox and acidity and improved SCR activity. The removal of NO by NH3‐SCR over CP‐400 at 150 °C follows the Eley‐Rideal (ER) and Langmuir‐Hinshelwood (LH) mechanisms.

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