Publications

2019

"The influence of H2O and SiO2 on the structure of silico-borate glasses"
R. Balzer, H. Behrens, S. Schuth, T. Waurisch, S. Reinsch, R. Müller, M. Fechtelkord.
Journal of Non-Crystalline Solids (2019), submitted.

“Structural investigation of hydrous phosphate glasses”
R. Balzer, H. Behrens, S. Reinsch, M. Fechtelkord.
Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B, 60 (2019) 49-61.


2015

“Water- and boron speciation in hydrous soda-lime-borate glasses”
U. Bauer, H. Behrens, M. Fechtelkord, S. Reinsch, J. Deubener.
Journal of non-crystalline solids, 423, (2015) 58-67.


2013

“The effect of fluorine, boron and phosphorus on the viscosity of pegmatite forming melts”
A. Bartels, H. Behrens, F. Holtz, B.C. Schmidt, M. Fechtelkord, J. Knipping, L. Crede, A. Baasner, N.Pukallus
Chemical Geology, 346 (2013), 184-198.

“Aluminum ordering and clustering in Al-rich synthetic phlogopite: The influence of fluorine investigated by {19F/1H} 29Si CPMAS NMR spectroscopy”
M. Fechtelkord, R. Langner
American Mineralogist, 98 (2013) 120-131.


2012

“Aluminum ordering and clustering in Al-rich synthetic phlogopite: {1H} → 29Si CPMAS HETCOR spectroscopy and atomistic calculations”
R. Langner, M. Fechtelkord, A. Garcia, E.J. Palin, J. Lopez-Solano
American Mineralogist, 97 (2012) 341–352.

“Aluminium ordering and clustering in Al-rich synthetic phlogopite: OH/F influence on the Al-content of phlogopite studied by solid-state NMR spectroscopy”
R. Langner, M. Fechtelkord
European Journal of Mineralogy, 24 (2012) 799-815.


2011

“Crystal Chemistry and Stability of “Li7La3Zr2O12” Garnet: A Fast Lithium-Ion Conductor”
C.A. Geiger, E. Alekseev, B. Lazic, M. Fisch, T. Armbruster, R. Langner, M. Fechtelkord, N. Kim, T. Pettke, W. Weppner
Inorganic Chemistry, 50 (2011) 1089-1097.

2010

“Structure and catalytic properties of MgO-supported vanadium oxide in the selective oxidation of cyclohexane”
E.F. Aboelfetoh, M. Fechtelkord, R. Pietschnig
Journal of Molecular Catalysis A: Chemical, 318 (2010) 51-59.

2008

„Phosphoryl triamide Polymers Revisited: Identification of Structural Units with ESI-MS/MS and Solid State NMR”
R. Pietschnig, M. Fechtelkord, S. Spirk, G.N. Rechberger
Journal of Inorganic and Organometallic Polymers, 18, (2008) 272-276.

2007

„Proton dynamics in letovicite: Part I. Static 1H NMR experiments and 15N MAS NMR experiments and lineshape simulations”
M. Fechtelkord, A. Diekmann, U. Bismayer.
American Mineralogist, 92, (2007) 1821-1826.

„Proton dynamics in letovicite: Part II. Static 2H NMR experiments and lineshape simulations”
M. Fechtelkord, A. Diekmann, U. Bismayer.
American Mineralogist, 92, (2007) 1827-1832.

“Crystal structure and stability of β-Na2ThF6 at non-ambient conditions“
A. Grzechnik, M. Fechtelkord, W. Morgenroth, J.M. Posse, K. Friese
Journal of Physics: Condensed Matter, 19, (2007) 266219-266230.

2006

“Structural variations in the solid solution series of sodalite-type (EuxCa2–x)4(OH)8[(Al2+xSi1–x)4O24]-SOD with 0 ≤ x ≤ 1, determined by X-ray powder diffraction and 27Al MAS NMR spectroscopy“
L. Peters, K. Knorr, M. Fechtelkord, P. Appel, W. Depmeier.
Zeitschrift für Kristallographie, 221 (2006) 643-648.

2004

“Solid State NMR spectroscopy as supporting method in Rietveld structure refinements of rock forming minerals - new developments and examples”
M. Fechtelkord
Review contribution to the 6th EMU school on “Spectroscopic Methods in Mineralogy”, Vienna 2004, eds. A. Beran and E. Libowitzky.
EMU Notes in Mineralogy, Eötvös University Press (Budapest), Volume 6 (2004) 421-463

“On the mechanisms of apophyllite alteration in aqueous solutions. A combined AFM, XPS, and MAS NMR study”
K. Aldushin, G. Jordan, M. Fechtelkord, W. W. Schmahl, H.-W. Becker, W. Rammensee
Clays and Clay Minerals, 52 (2004) 432-442.

“Isomorphy of structural phase transitions in LiTaOSiO4, LiTaOGeO4 and titanite, CaTiOOSiO4
T. Malcherek, A. Bosenick, L. Cemic, M. Fechtelkord, A. Guttzeit.
Journal of Solid State Chemistry, 177 (2004) 3254-3262.

2003

"Influence of F content on the composition of Al-rich synthetic phlogopite: Part II. Investigation of the structural arrangement of fluorine and hydroxyl anions in the brucite layers by 27Al MQMAS and 1H/19F-27Al HETCOR and REDOR experiments"
M. Fechtelkord, H. Behrens, F. Holtz, C.A. Fyfe, L.A. Groat, M. Raudsepp.
American Mineralogist, 88 (2003) 1046-1054.

"Characterization of basic cancrinite synthesized in a butanediol-water system"
M. Fechtelkord, B. Posnatzki, J.-Chr. Buhl.
European Journal of Mineralogy, 15 (2003) 589-598.

"Influence of F content on the composition of Al-rich synthetic phlogopite: Part I. New information on structure and phase formation from 29Si, 1H and 19F MAS NMR spectroscopies "
M. Fechtelkord, H. Behrens, F. Holtz, C.A. Fyfe, L.A. Groat, M. Raudsepp.
American Mineralogist, 88 (2003) 47-53.

2002

"Kinetics and Phase Transformations During the Reaction of NaCl-Sodalite in Ammonium Chloride Solutions"
J.-Chr. Buhl, H.-H. Pietsch, M. Fechtelkord.
React. Kinet. Catal. Lett., 76 (2002) 3-9.

2001

"Synthesis of basic cancrinite in a butanediol- water system"
M. Fechtelkord, B. Posnatzki, J.-Chr. Buhl.
Chemistry of Materials, 13 (2001) 1967-1975.

"Sodium cation dynamics in nitrate cancrinite: A low- and high-temperature 23Na and 1H MAS NMR study and High-temperature Rietveld powder diffraction refinement"
M. Fechtelkord, F. Stief, J.-Chr. Buhl.
American Mineralogist, 86, (2001) 165-175.

"Characterization of synthetic lithium-cesium-cancrinite grown in a butanediol-water system: an NMR spectroscopic and Rietveld refinement study"
M. Fechtelkord, B. Posnatzki, J.-Chr. Buhl, C.A. Fyfe, L.A. Groat, M. Raudsepp.
American Mineralogist, 86 (2001) 881-888.

2000

"Influence of sodium dynamics on the quadrupolar interaction in sodalite: A 23Na high- temperature MAS study"
M. Fechtelkord
Solid State NMR, 18 (2000) 70-88.

"Proton Dynamics in Letovicite, (NH4)3H(SO4)2: A 1H and 14N NMR spectroscopic study"
M. Fechtelkord, A. Engelhardt, L. Schwalowsky, U. Bismayer
Solid State NMR, 17 (2000) 76-88.

"Synthesis, X-ray diffraction and MAS NMR characteristics of nitrate cancrinite Na7.6[AlSiO4]6(NO3)1.6(H2O)2"
J.-Ch. Buhl, F. Stief, M. Fechtelkord, Th. M. Gesing, U. Taphorn, C. Taake
J. Alloys and Compounds, 305 (2000) 93-102.

„The crystallization kinetics of nitrate cancrinite Na7.6[AlSiO4]6(NO3)1.6(H2O)2 under low temperature hydrothermal conditions"
J.-Ch. Buhl, C. Taake, F. Stief, M. Fechtelkord
React. Kinet. Catal. Lett., 69 (2000) 15-21.

1999

"Synthesis and crystal structure of carbonate cancrinite Na8[AlSiO4]6CO3(H2O)3.4, grown under low temperature hydrothermal conditions"
K. Hackbarth, Th. M. Gesing, M. Fechtelkord, F. Stief, J.-Ch. Buhl
Microporous and Mesoporous materials, 30 (1999) 347-358.

"Structural study of Na8[AlSiO4]6(CO3)x(HCOO)2-2x(H2O)4x, 0.2 ≤ x ≤ 1 synthesized in organic solvents: Order and disorder of carbonate and formate anions in sodalite"
M. Fechtelkord
Microporous and Mesoporous materials, 28 (1999) 335-351.

1998

"The crystallization kinetics of Na7.4[AlSiO4]6(CO3)0.7 × 4H2O: An intermediate Phase between cancrinite and sodalite, grown under low temperature hydrothermal conditions"
K. Hackbarth, M. Fechtelkord, J.-Chr. Buhl.
React. Kinet. Catal. Lett., 65 (1998) 33-39.

"A 207Pb NMR spectroscopic study of pure and diluted lead phosphate"
M. Fechtelkord, U. Bismayer.
Solid State NMR, 11 (1998) 231-241.

1997

"The formation of unusually twofold coordinated boron in a sodalite matrix"
H. H. Pietsch, M. Fechtelkord, J.Chr. Buhl
J. Alloys Compounds, 257 (1997) 168-174.

"On the synthesis of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2(HCOO)2-x, (0 ≤ x ≤ 2) in organic solvents"
M. Fechtelkord, B. Posnatzki, J.-Chr. Buhl
Zeolites, 19 (1997) 334-342.

"Non-Framework aluminium in highly dealuminated Y zeolites generated by steaming or substitution"
W. Lutz, E. Löffler, M. Fechtelkord, E. Schreier, R. Bertram
Stud. Surf. Sci. Catal., 105 (1997) 439 - 446.

1995

"Enhanced Sensitivity of Zero-Field NMR Spectroscopy at High Magnetic Fields"
H. Ernst, M. Fechtelkord, D. Fenzke, D. Freude, B. Knorr, H. Kolley
Z. Naturforsch. 50a (1995) 388-394.


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