Highly active Ag/SBA-15 catalyst using post-grafting method for formaldehyde oxidation

Qu, Zhenping; Shen, Shijin; Chen, Dan; Wang, Yi

doi:10.1016/j.molcata.2012.01.013

Cited by 83 publications

(43 citation statements)

References 34 publications

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“…This result was consistent with the literature [45]. Adding Ni to the Ag/SBA-15 catalyst evidently enhanced the absorption peak intensity of COAg 0 , illustrating that carbonyl complexes were resistant to evacuation at room temperature.…”

Section: Discussionsupporting

confidence: 92%

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Enhanced chemoselective hydrogenation of dimethyl oxalate to methyl glycolate over bimetallic Ag–Ni/SBA-15 catalysts

Zhou

Duan

et al. 2015

Applied Catalysis A: General

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Section: Discussionsupporting

confidence: 92%

“…Hence, the Ag species possessed a higher IR wavenumber with higher valence state. This result was consistent with the literature [45].…”

Section: Ft-ir Study Of Co Absorbed On Catalystssupporting

confidence: 94%

Enhanced chemoselective hydrogenation of dimethyl oxalate to methyl glycolate over bimetallic Ag–Ni/SBA-15 catalysts

Zhou

Duan

et al. 2015

Applied Catalysis A: General

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“…It has been shown to be a promising method for indoor air HCHO removal. 12 There are two main kinds of catalysts for HCHO oxidation including supported noble metal (Pt, Au, Rh and Pd) [13][14][15][16][17][18] and non-noble metal oxide (Ag, Co, Ce and Mn) 10,[19][20][21][22][23][24] catalysts.…”

Section: 3mentioning

confidence: 99%

Catalytic oxidation of formaldehyde over manganese oxides with different crystal structures

Zhang

Wang

et al. 2015

Catal. Sci. Technol.

485

254

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, β-, γ-and δ-MnO 2 catalysts were prepared by a hydrothermal method and tested for the catalytic oxidation of formaldehyde (HCHO) at low temperature. Dramatic differences in activities among the MnO 2 catalysts with different crystal structures were observed. The δ-MnO 2 catalyst exhibited the best activity among the four catalysts and achieved nearly complete HCHO conversion at 80°C, while the α-, β-and γ-type MnO 2 obtained 100% HCHO conversion at 125°C, 200°C, 150°C, respectively. The catalysts were next characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), Field-Emission Scanning Electron Microscopy (FE-SEM), temperature-programmed reduction by H 2 (H 2 -TPR), X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption of HCHO (HCHO-TPD) methods to investigate the factors influencing the catalytic activity. Based on the characterization results, it is supposed that the tunnel structure and active lattice oxygen species are the main factors that contribute to the excellent performance of δ-MnO 2 . According to the high catalytic performance and facile preparation process, δ-MnO 2 may potentially be used as a support in applications of supported catalysts.

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“…[4][5][6][7][8][9] Among these methods, catalytic oxidation is known as the most promising method for HCHO removal, which could selectively decompose HCHO to harmless CO 2 and water at a low temperature without any secondary pollution. 10,11 For decades, researchers paid attention to conventional catalysts including metal oxides (Co, Ni, Mn, Ag) 3,[12][13][14][15][16][17][18][19][20] and supported noble metal (Pt, Au, Pd, Rh) catalysts [21][22][23][24][25][26][27][28][29][30][31][32][33] for HCHO oxidation. A relatively high temperature is generally needed to completely oxidize HCHO using the metal oxide catalysts.…”

Section: Introductionmentioning

confidence: 99%

Influence of alkali metals on Pd/TiO₂catalysts for catalytic oxidation of formaldehyde at room temperature

Zhang

et al. 2016

Catal. Sci. Technol.

107

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We previously observed that sodium (Na) addition had a dramatic promotion effect on Pd/TiO 2 catalysts for formaldehyde (HCHO) oxidation. In this study, a series of alkali metal (Li, Na, K, Cs) doped Pd/TiO 2 catalysts were prepared and tested for ambient temperature HCHO oxidation. The results showed that the doped alkali metals have a common promotion effect on the performance of the Pd/TiO 2 catalysts for HCHO oxidation under ambient temperature, which followed the order K > Cs > Na > Li. X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), CO chemisorption, Transmission Electric Microscopy (TEM), temperature-programmed reduction by H 2 (H 2 -TPR), X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption by O 2 (O 2 -TPD) methods were used to characterize the alkali metal doped catalysts to investigate the mechanism of the alkali metal promotion effect. The results showed that a negatively charged and well-dispersed Pd species was induced and stabilized by alkali metal addition, which facilitates the activation of chemisorbed oxygen, and then enhances the performance of alkali metal doped Pd/TiO 2 catalysts for room temperature HCHO destruction. The K-Pd/TiO 2 catalyst in particular possessed the highest Pd dispersion degree with active sites, attributing to the best activity in ambient temperature HCHO oxidation.

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Highly active Ag/SBA-15 catalyst using post-grafting method for formaldehyde oxidation

Cited by 83 publications

References 34 publications

Enhanced chemoselective hydrogenation of dimethyl oxalate to methyl glycolate over bimetallic Ag–Ni/SBA-15 catalysts

Enhanced chemoselective hydrogenation of dimethyl oxalate to methyl glycolate over bimetallic Ag–Ni/SBA-15 catalysts

Catalytic oxidation of formaldehyde over manganese oxides with different crystal structures

Influence of alkali metals on Pd/TiO₂catalysts for catalytic oxidation of formaldehyde at room temperature

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Highly active Ag/SBA-15 catalyst using post-grafting method for formaldehyde oxidation

Cited by 83 publications

References 34 publications

Enhanced chemoselective hydrogenation of dimethyl oxalate to methyl glycolate over bimetallic Ag–Ni/SBA-15 catalysts

Enhanced chemoselective hydrogenation of dimethyl oxalate to methyl glycolate over bimetallic Ag–Ni/SBA-15 catalysts

Catalytic oxidation of formaldehyde over manganese oxides with different crystal structures

Influence of alkali metals on Pd/TiO2catalysts for catalytic oxidation of formaldehyde at room temperature

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Product

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Influence of alkali metals on Pd/TiO₂catalysts for catalytic oxidation of formaldehyde at room temperature