EPR Study of Dealuminated HY Zeolite and Silica Containing Cu-Mn-Zn Spinels: The Effect of Support

• Authors: P. Decyk , A. Więckowski , L. Najder-Kozdrowska , I. Bilkova , M. Ziółek
• Languages of publication: EN

Abstracts

EN

A mixture of antiferromagnetic Cu_{1.4}Mn_{1.6}O₄ and Cu_{0.5}Zn_{0.5}Mn₂O₄ or/and ZnMn₂O₄ spinels was prepared. Dealuminated HY zeolite and silica were doped by these Cu-Mn-Zn spinels. The materials were investigated by X-ray diffraction, the Fourier transform infrared spectroscopy and EPR spectroscopy. Additionally, all the samples were tested for their activity for isopropyl alcohol dehydration/dehydrogenation. Three EPR signals were observed for Cu-Mn-Zn/dealuminated HY and Cu-Mn-Zn/SiO₂ samples at 293 K. In contrast to the spectra recorded at 293 K, only one broad line attributed to Cu-Mn-Zn spinels was visible at 77 K. The EPR signal from pure Cu-Mn-Zn spinels consists only of a single broad line when recorded at 293 K, whereas at 77 K the line is narrower. For all samples subjected to evacuation at high vacuum up to 573 K, the Cu-Mn-Zn spinels were stable. The evacuation at 673 K resulted in a rapid lowering of the intensity of EPR spectrum.

Keywords

EN

68.43.-h; 76.30.-v; 76.30.Fc; 82.75.Vx

Discipline

• 68.43.-h: Chemisorption/physisorption: adsorbates on surfaces
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)
• 76.30.Fc: Iron group (3d) ions and impurities (Ti-Cu)
• 82.75.Vx: Clusters in zeolites

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 1
• Pages: 38-44

Dates

published

2017-07

Contributors

author

P. Decyk

• Adam Mickiewicz University, Faculty of Chemistry, Umultowska 89b, 61-614 Poznań, Poland

author

A. Więckowski

• University of Zielona Góra, Faculty of Physics and Astronomy, Institute of Physics, Z. Szafrana 4a, 65-516 Zielona Góra, Poland
• Institute of Molecular Physics, Polish Academy of Sciences, Division of Physics of Dielectrics and Molecular Spectroscopy, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

L. Najder-Kozdrowska

• University of Zielona Góra, Faculty of Physics and Astronomy, Institute of Physics, Z. Szafrana 4a, 65-516 Zielona Góra, Poland

author

I. Bilkova

• Adam Mickiewicz University, Faculty of Chemistry, Umultowska 89b, 61-614 Poznań, Poland

author

M. Ziółek

• Adam Mickiewicz University, Faculty of Chemistry, Umultowska 89b, 61-614 Poznań, Poland

References

• [1] R.E. Vandenberghe, G.G. Robbrecht, V.A.M. Brabers, Mater. Res. Bull. 8, 571 (1973), doi: 10.1016/0025-5408(73)90134-7
• [2] A.D.D. Broemme, V.A.M. Brabers, Solid State Ion. 16, 171 (1985), doi: 10.1016/0167-2738(85)90040-2
• [3] B. Gillot, S. Buguet, E. Kester, J. Mater. Chem. 7, 2513 (1997), doi: 10.1039/a703731g
• [4] P. Wei, M. Bieringer, L.M.D. Cranswick, A. Petric, J. Mater. Sci. 45, 1056 (2010), doi: 10.1007/s10853-009-4042-2
• [5] F.S. Stone, Adv. Catal. 13, 1 (1962), doi: 10.1016/S0360-0564(08)60285-0
• [6] G.M. Schwab, S.B. Kanungo, Z. Phys. Chem. Neue Fol. 107, 109 (1977), doi: 10.1524/zpch.1977.107.1.109
• [7] S. Vepřek, D.L. Cocke, S. Kehl, H.R. Oswald, J. Catal. 100, 250 (1986), doi: 10.1016/0021-9517(86)90090-4
• [8] L.S. Puckhaber, H. Cheung, D.L. Cocke, A. Clearfield, Solid State Ion. 32-33, 206 (1989), doi: 10.1016/0167-2738(89)90223-3
• [9] I. Spassova, D. Mehandjiev, React. Kinet. Catal. Lett. 58, 57 (1996), doi: 10.1007/BF02071105
• [10] G.J. Hutchings, A.A. Mirzaei, R.W. Joyner, M.R.H. Siddiqui, S.H. Taylor, Appl. Catal. A Gen. 166, 143 (1998), doi: 10.1016/S0926-860X(97)00248-2
• [11] F.C. Buciuman, F. Patcas, T. Hahn, Chem. Eng. Process. 38, 563 (1999), doi: 10.1016/S0255-2701(99)00053-7
• [12] M. Kang, E.D. Park, J.M. Kim, J.E. Yie, Catal. Today 111, 236 (2006), doi: 10.1016/j.cattod.2005.10.032
• [13] J.H. Fei, M.X. Yang, Z.Y. Hou, X.M. Zheng, Energ. Fuel. 18, 1584 (2004), doi: 10.1021/ef049961f
• [14] J.H. Fei, Z.Y. Hou, B. Zhu, H. Lou, X.M. Zheng, Appl. Catal. A Gen. 304, 49 (2006), doi: 10.1016/j.apcata.2006.02.019
• [15] A.K. Bandyopadhyay, J. Mater. Sci. 15, 1605 (1980), doi: 10.1007/BF00550574
• [16] T.H. Bennur, D. Srinivas, P. Ratnasamy, Micropor. Mesopor. Mater. 48, 111 (2001), doi: 10.1016/S1387-1811(01)00345-6
• [17] P. Decyk, A.B. Więckowski, L. Najder-Kozdrowska, I. Bilkova, Nukleonika 60, 423 (2015), doi: 10.1515/nuka-2015-0075
• [18] H.G. Karge, M. Hunger, H.K. Beyer, in: Catalysis and Zeolites: Fundamentals and Applications, Eds. J. Weitkamp, L. Puppe, Springer, Berlin 1999, p. 198, doi: 10.1007/978-3-662-03764-5
• [19] P.A. Jacobs, M. Tielen, J.B. Uytterhoeven, J. Catal. 50, 98 (1977), doi: 10.1016/0021-9517(77)90012-4
• [20] P.A. Jacobs, J.B. Uytterhoeven, J. Catal. 50, 109 (1977), doi: 10.1016/0021-9517(77)90013-6
• [21] P.E. Hathaway, M.E. Davis, J. Catal. 119, 497 (1989), doi: 10.1016/0021-9517(89)90177-2
• [22] C. Lahousse, J. Bachelier, J.C. Lavalley, H. Lauron-Pernot, A.M. Le Govic, J. Mol. Catal. 87, 329 (1994), doi: 10.1016/0304-5102(93)E0232-6
• [23] Zh. Li, K. Xie, R.C.T. Slade, Appl. Catal. A Gen. 209, 107 (2001), doi: 10.1016/S0926-860X(00)00745-6
• [24] J. Goslar, A.B. Więckowski, J. Solid State Chem. 56, 101 (1985), doi: 10.1016/0022-4596(85)90257-9
• [25] B. Bleaney, R.S. Rubins, Proc. Phys. Soc. 77, 103 (1961), doi: 10.1088/0370-1328/77/1/312
• [26] Z. Olender, D. Goldfarb, J. Batista, J. Am. Chem. Soc. 115, 1106 (1993), doi: 10.1021/ja00056a040

Identifiers

DOI

10.12693/APhysPolA.132.38