Effect of SiOH/Ag ratio on catalytic activity of Ag/SBA-15 catalysts in CO oxidation reaction | Vestnik Tomskogo gosudarstvennogo universiteta. Chimia – Tomsk State University Journal of Chemistry. 2021. № 22. DOI: 10.17223/24135542/22/1

Effect of SiOH/Ag ratio on catalytic activity of Ag/SBA-15 catalysts in CO oxidation reaction

The effect of the pretreatment temperature of the SBA-15 support on the catalytic activity of Ag / SBA-15 catalysts was studied in the CO oxidation reaction. The catalysts were prepared by incipient wetness impregnation. The supports were preliminarily calcined at 500, 700, and 900 ^oC. The catalysts and supports were investigated by low-temperature nitrogen adsorption, TPD-HO, TPR-H₂ and were tested in the CO oxidation reaction. It was found that the calcination temperature of the SBA-15 support affects the nature of the distribution ofsilver and the catalytic activity of the catalysts.

Download file

Counter downloads: 41

Keywords

silver catalysts, SBA-15, CO oxidation, support pretreatment, active sites

Authors

Name	Organization	E-mail
Mikheeva Natalia N.	Tomsk State University	natlitv93@yandex.ru
Mamontov Grigory V.	Tomsk State University	grigoriymamontov@mail.ru

Всего: 2

References

Zhang X., Qu Z., Li X., Wen M., Quan X., Ma D., Wu J. Studies of silver species for low-temperature CO oxidation on Ag/SiO2 catalysts // Separation and purification technology. 2010. Vol. 72, № 3. Р. 395-400.

Dai W.L., Cao Y., Ren L.P., Yang X.L., Xu J.H., Li H.X., Fan K.N. Ag-SiO2-Al2O3 composite as highly active catalyst for the formation of formaldehyde from the partial oxidation of methanol // Journal of Catalysis. 2004. Vol. 228, № 1. Р. 80-91.

Alimunnisa J., Ravichandran K., Meena K.S. Synthesis and characterization of Ag@SiO2 core-shell nanoparticles for antibacterial and environmental applications // Journal of Molecular Liquids. 2017. № 231. Р. 281-287.

Biemelt T., Wegner K., Teichert J., Lohe M.R., Martin J., Grothe J., Kaskel S. Hopcalite nanoparticle catalysts with high water vapour stability for catalytic oxidation of carbon monoxide // Applied Catalysis B: Environmental. 2016. № 184. Р. 208-215.

Kale M.J., Gidcumb D., Gulian F.J., Miller S.P., Clark C.H., Christopher P. Evaluation of platinum catalysts for naval submarine pollution control // Applied Catalysis B: Environmental. 2017. № 203. Р. 533-540.

Arunkumar S., Hou T., Kim Y.B., Choi B., Park S.H., Jung S., Lee D.W. Au Decorated ZnO hierarchical architectures: Facile synthesis, tunable morphology and enhanced CO detection at room temperature // Sensors and Actuators B: Chemical. 2017 № 243. Р. 990-1001.

Pahalagedara L., Kriz D.A., Wasalathanthri N., Weerakkody C., Meng Y., Dissanayake S., Meyer R.J. Benchmarking of manganese oxide materials with CO oxidation as catalysts for low temperature selective oxidation // Applied Catalysis B: Environmental. 2017. № 204. Р. 411-420.

Vedyagin A.A., Volodin A.M., Kenzhin R.M., Chesnokov V.V., Mishakov I.V. CO oxidation over Pd/ZrO2 catalysts: role of support' s donor sites // Molecules. 2016. Vol. 21, № 10. Р. 1289.

Yu L., Shi Y., Zhao Z., Yin H., Wei Y., Liu J., Wang A. Ultrasmall silver nanoparticles supported on silica and their catalytic performances for carbon monoxide oxidation // Catalysis Communications. 2011. Vol. 12, № 7. Р. 616-620.

Zhang X., Qu Z., Jia J., Wang Y. Ag nanoparticles supported on wormhole HMS material as catalysts for CO oxidation: Effects of preparation methods // Powder technology. 2012. № 230. 'Р. 212-218.

Dutov V.V., Mamontov G.V., Zaikovskii V.I., Vodyankina O.V. The effect of support pretreatment on activity of Ag/SiO2 catalysts in low-temperature CO oxidation // Catalysis Today. 2016. № 278. Р. 150-156.

Dutov V.V., Mamontov G.V., Zaikovskii V.I., Liotta L.F., Vodyankina O.V. Low-temperature CO oxidation over Ag/SiO2 catalysts: Effect of OH/Ag ratio // Applied Catalysis B: Environmental. 2018. № 221. Р. 598-609.

Verma P., Kuwahara Y., Mori K., Raja R., Yamashita H. Functionalized mesoporous SBA-15 silica: recent trends and catalytic applications // Nanoscale. 2020. Vol. 12, № 21. Р. 11333-11363.

Mikheeva N.N., Zaikovskii V.I., Mamontov G.V. The effect of Ag and CeO2 distribution on SBA-15 surface on the activity of Ag-CeO2/SBA-15 catalysts in CO and methanol oxidation // Journal of Sol-Gel Science and Technology. 2019. Vol. 92, № 2. р. 398-407.

Mikheeva N.N., Zaikovskii V.I., Larichev Y.V., Mamontov G.V. Toluene abatement on Ag-CeO2/SBA-15 catalysts: synergistic effect of silver and ceria // Materials Today Chemistry. 2021. № 21. Р. 100530.

Zhao D., Huo Q., Feng J., Chmelka B.F., Stucky G.D. Nonionic triblock and star diblock copolymer and oligomeric surfactant syntheses of highly ordered, hydrothermally stable, mesoporous silica structures // Journal of the American Chemical Society. 1998. Vol. 120, № 24. Р. 6024-6036.

Zhuravlev L.T. The surface chemistry of amorphous silica. Zhuravlev model // Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2000. Vol. 173, № 1-3. Р. 1-38.

Thommes M., Kaneko K., Neimark A.V., Olivier J.P., Rodriguez-Reinoso F., Rouquerol J., Sing K.S. Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report) // Pure and applied chemistry. 2015. Vol. 87, № 9-10. Р. 1051-1069.