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Synthesis and Spectroscopic Characterization of Vanadium-Incorporated V-AlMCM-48 Mesoporous Material  

Back, Gernho (Department of Chemistry, Changwon National University)
Yu, Jong-Sung (Department of Chemistry, Hannam University)
Park, Sung-Kun (Department of Chemistry, Changwon National University)
Lee, Chul Wee (Advanced Chemical Technology Division, KRICT)
Won, Taejin (Department of Chemistry, Changwon National University)
Publication Information
Korean Chemical Engineering Research / v.44, no.4, 2006 , pp. 369-374 More about this Journal
Abstract
A solid-state reaction of $V_2O_5$ with AlMCM-48 followed by calcination generated very weak paramagnetic $VO^{2+}$ species in the mesoporous material. Dehydration and subsequent reduction with CO result in the formation of vanadyl $VO^{2+}$ species that can be characterized by EPR. The chemical environment of vanadium centers in $VO^{2+}-AlMCM-48$ was investigated by XRD, EDX, DR-UV-Vis, EPR,$^{29}Si$ and $^{27}Al$ and $^{51}V$ NMR. Vanadium species in MCM-48 are existed as pseudotetrahedral $VO^{2+}$ state when they were dehydrated or reduced with CO. The coordination of water on vanadyl ions transformed their structure to distorted octahedral.
Keywords
MCM-48; Vanadyl; EPR; NMR;
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1 Chang, Z., Krishina, R. M., Xu, J., Koodali, R. and Kevan, L., 'Photooxidation of Alkylphenothiazines in SiMCM-48, AlMCM- 48 and VMCM-48 Mesoporous Molecular Sieves', Phys. Chem. Chem. Phys., 3, 1699-1704(2001)   DOI
2 Kresge, C. T., Leonowicz, M. E., Roth, W. J., Vartuli J. C. and Beck, J. S., 'Ordered Mesoporous Molecular Sieves Synthesized by a Liquid-Crystal Template Mechanism,' Nature, 359, 710-712 (1992)   DOI
3 Morey, M., Davidson, A., Eckert, H. and Stucky, G., 'Pseudotetrahedral $O_{3/2}$ V=O Centers Immobilized on the Walls of a Mesoporous, Cubic MCM-48 Support: Preparation, Characterization, and Reactivity toward Water as Investigated by $^{51}V$ NMR and UV-vis Spectroscopies', Chem. Mater., 8(2), 486-492 (1996)   DOI   ScienceOn
4 Ryoo, R., Joo, S. H. and Kim, J. M., 'Energetically Favored Formation of MCM-48 from Cationic-Neutral Surfactant Mixtures', J. Phys. Chem. B, 103(35), 7435-7440(1999)   DOI   ScienceOn
5 Yoon, S. B., Kim, J. Y. and Yu, J.-S., 'Synthesis of Highly Ordered Nanoporous Carbon Molecular Sieves from Silated MCM-48 Using Divinylbenzene as Precursor ', Chem. Commun., 559-560 (2001)
6 Luan, Z., Hartmann, M., Zhao, D., Zhou, W. and Kevan, L., 'Alumination and Ion Exchange of Mesoporous SBA-15 Molecular Sieves', Chem. Mater., 11(6), 1621-1627(1999)   DOI   ScienceOn
7 Prakash, A. M. and Kevan, L., 'Location and Adsorbate Interactions of Vanadium in VAPO-5 Molecular Sieves Studied by Electron Spin Resonance and Electron Spin Echo Modulation Spectroscopies', J. Phys. Chem. B, 103(12), 2214-2222(1999)   DOI   ScienceOn
8 Xu, J., Luan, Z., Martin, H. and Kevan, L., 'Synthesis and Characterization of Mn-Containing Cubic Mesoporous MCM- 48 and AlMCM-48 Molecular Sieve', Chem. Mater., 11(10), 2928-2936(1999)   DOI   ScienceOn
9 Beck, J. S., Vartuli, J. C., Roth, W. J., Lenowicz, M. E., Kresgo, C. T., Schmitt, K. D., Chu, C. T.-W., Olson, D. H., Sheppard, E. W., McCullen, S. B., Higgins, J. B. and Schlenker, J. L., 'A New Family of Mesoporous Molecular Sieves Prepared with Liquid Crystal Templates', J. Am. Chem. Soc., 114(27), 10834-10843 (1992)   DOI
10 Hartmann, M., Racouchot, S. and Bichof, C., 'Characterization of Copper and Zinc Containing MCM-41 and MCM-48 Mesoporous Molecular Sieves by Temperature Programmed Reduction and Carbon Monoxide Adsorption', Micropor. Mesopor. Mater., 27, 309-320(1999)   DOI   ScienceOn
11 Back, G., Kim, Y., Cho, Y.-S., Lee Y.-I. and Lee, C. W., 'Comparative Evaluation of Mn(II) Framework Substitution in MnAPSO-34 and Mn-Impregnated SAPO-34 Molecular Sieves Studied by Electron Spin Resonance and Electron Spin Echo Modulation Spectroscopy', J. Kor. Mag. Res. Soc., 6(1), 20-37 (2002)
12 Xu, W., Andin, M., Zakia S. and Akins, D. L., 'Aggregation of Thionine within AlMCM-48', J. Phys. Chem. B, 108(18), 5588-5593(2004)   DOI   ScienceOn
13 Xu, J., Luan, Z., He, H., Zhou, W. and Kevan, L., 'A Reliable Synthesis of Cubic Mesoporous MCM-48 Molecular Sieve', Chem. Mater., 10(11), 3690-3698(1998)   DOI   ScienceOn
14 Zhang, W. and Pinnavaia, T. J., 'Transition Metal Substituted Derivatives of Cubic MCM-48 Mesoporous Molecular Sieves', Catal. Lett., 38, 261-265(1996)   DOI
15 Back, G., Park, S.-G. and Lee, C. W., 'The Study on Location and Adsorbate Interaction for Vanadium Species in $VO^{2+}$-SAPO-5 by Electron Spin Resonance and Electron Spin Echo Modulation Spectroscopies', J. Kor. Mag. Res. Soc., 9(2), 138-154(2005)   과학기술학회마을