Ozone Decomposition over Silver-Loaded Perlite
The Bulgarian natural expanded mineral obtained from Bentonite AD perlite (A deposit of "The Broken Mountain" for perlite mining, near by the village of Vodenicharsko, in the municipality of Djebel), was loaded with silver (as ion form - Ag+ 2 and 5 wt% by the incipient wetness impregnation method), and as atomic silver - Ag0 using Tollen-s reagent (silver mirror reaction). Some physicochemical characterization of the samples are provided via: DC arc-AES, XRD, DR-IR and UV-VIS. The aim of this work was to obtain and test the silver-loaded catalyst for ozone decomposition. So the samples loaded with atomic silver show ca. 80% conversion of ozone 20 minutes after the reaction start. Then conversion decreases to ca. 20 % but stay stable during the prolongation of time.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077108Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1819
 P. Nikolov, K. Genov, B. Ivanov, K Milenova. and I. Avramova, "Ozone Decomposition on PdO-CeO2/ZSM-5 Catalyst."Compt. Rend. Acad. Bulg. Sci., Vol. 62 No. 12, pp. 1515-1520, 2009.
 N. Kumar, P. Konova, A. Naydenov, T. Heikill├ñ, T Salmi. and D. Yu. Murzin, "Synthesis of Novel Ag Modified MCM-41 Mesoporous Molecular Sieve and Beta Zeolite Catalysts for Ozone Decomposition at Ambient Temperature" Catal. Lett. Vol. 98 No.1, pp. 57-60, 2004.
 N. Kumar, P. Konova, A. Naydenov, T. Salmi, D.Yu. Murzin, T Heikill├ñ. and V.-P. Lehto, "Ag-modified H-Beta, H-MCM-41 and SiO2: Influence of support, acidity and Ag content in ozone decomposition at ambient temperature" Cat. Today, Vol. 119 No. 1-4, pp. 342-346, 2007.
 A. Naydenov, P. Konova, Pen. Nikolov, F. Klingstedt, N. Kumar, D. Kovacheva, P. Stefanov, R Stoyanova. and D. Mehandjiev, "Decomposition of ozone on Ag/SiO2 catalyst for abatement of waste gases emissions". Cat. Today, Vol. 137 No. 2-4, pp. 471-474, 2008.
 P. Nikolov, K Milenova. and D. Mehandjiev, "Decomposition of Ozone over Pure and Doped with Cu and Mn Zinc Oxide", Compt. Rend. Acad. Bulg. Sci., Vol. 61 No. 9, pp. 1127-1132, 2008.
 I. Boevski, K. Genov, N. Boevska, K. Milenova, T. Batakliev, V. Georgiev, Pen. Nikolov and D. K. Sarker," Low Temperature Ozone Decomposition on Cu2+, Zn2+ and Mn2+-Exchanged Clinoptilolite" Compt. Rend. Acad. Bulg. Sci., Vol. 64 No.1, pp. 33-38, 2011.
 P. Nikolov, K. Genov, P. Konova, K. Milenova, T. Batakliev, V. Georgiev, N. Kumar, D. K. Sarker, D Pishev. and S. Rakovsky, "Ozone decomposition on Ag/SiO2 and Ag/clinoptilolite catalysts at ambient temperature" J. Hazard. Mater., Vol. 184 No. 1-3, pp. 16-19, 2010.
 A. Chakir, J. Bessiere, K. EL. Kacemi, and B.,Marouf. ÔÇ×A comparative study of the removal of trivalent chromium from aqueous solutions by bentonite and expanded perlite" J. Hazard. Mater., Vol. 95 No. 1-2, pp. 29-46, 2002.
 D.C. Lim, I. Lopez-Salido and Y.D. Kim, ÔÇ×Characterization of Ag nanoparticles on Si wafer prepared using Tollen's reagent and acidetching" Appl. Surf. Sci., Vol. 253 No.2, pp.959-965, 2006.
 Y. Dimitriev, B. Samuneva, I.M. Miranda Salvado, E Kashchieva. and A. Bachvarova, ÔÇ× IR investigations of mullite, sinthesized by sol - gel technology " J. Univ. Chem. Tech. Metall., Vol. 38 No1, pp. 31-36. 2003.
 K. Chakarova, E. Ivanova, K. Hadjiivanov, D Klissurski. and H. Knözinger, ÔÇ×Co-ordination chemistry of palladium cations in Pd-HZSM- 5 as revealed by FTIR spectra of adsorbed and co-adsorbed probe molecules (CO and NO)". Phys. Chem. Chem. Phys., Vol. 6 No 13, pp. 3702-3709, 2004.
 G. N. Waterhouse, G. A. Bowmaker and J.B. Metson, "Oxygen chemisorption on an electrolytic silver catalyst: a combined TPD and Raman spectroscopic study", Appl. Surf. Sci., Vol. 214 No. 1-4 pp. 36- 51, 2003.