Moessbauer studies

Moessbauer study of the behaviour of synthetic corrosion products of nuclear power plants. Radiat. Phys. Chem. 11 321-326 Blesa, M.A. Mijalchik, M. Villegas, M. 

Mor] Moriya, T., Ukai, K., Kato, K., Kimura, M., Yazaki, K., Isokane, Y, Miyazaki, X, Kozakai, T., Koyama, X, Moessbauer Study on the Phase Separation of Fe-Co-Si Alloys , Mater. Trans. JIM, 37(5), 965-969 (1996) (Experimental, Electronic Structure, Phase Relations, 11)... 

Uwa] Uwakweh, O.N.C., Bauer, Ph., Genin, J.M.R., Moessbauer Study of the Hydrogen Induced Martensitic Transformation in High Carbon Fe-C Martensite and its Ageing Behaviour , HyperfineInteract, 54, 877-882 (1990) (Experimental, Electrochemistry, Electronic Structure, 4)... 

Lad] Ladriere, J.H., He, X.J., Moessbauer Study on Retained Austenite in an Fe-Mn-C Dual-Phase Steel , Mater. Set Eng., 77, 133-138 (1986) (Phys. Prop., Experimental, 13)... 

Regnard, J.R., Moessbauer Study of Fe in Doped CaO Crystals , Solid State Commun., 12(3), 207-209 (1973) (Electronic Structure, 10)... 

Kawakami, T., Nasu, S., Sasaki, T., Kuzushita, K., Morimoto, S., Endo, S., Kawasaki, S., Takano, M., High-Pressure Moessbauer Study of Perovskite Iron Oxides , J. Phys. Con-dens. Matter, 14(44), 10713-10718 (2002) (Experimental, Phase Diagram, Phys. Prop., 9) Ross, N., Angel, R.J., Seifert, F., Compressibility of Brownmillerite (Ca2Fe20s) Effect of Vacancies on the Elastic Properties of Perovskites , Phys. Earth Planet. Interiors, 129, 145-151 (2002) (Experimental, Crys. Strueture, 33)... 

There have been so far no in sim Moessbauer studies with catalysts, most likely due to the loss of intensity (recoil-free fraction) and of particle size differentiation with increasing temperature. 

Dey] De Young, D.B., Barnes, R.G., Fe Moessbauer Study of Some M2(M )B2 Borides , J. Phys. Chem. Solids, 34, 139 (1973) (Crys. Structure, Experimental, Electronic Structure, Magn. Prop., 5)... 

Uson, R., Laguna, A., De la Orden, M.U., Parish, R.V. and Moore, L.S. (1985) Synthesis and gold-197 Moessbauer spectroscopic studies of dihalo (pentafluorophenyl) (bidentate ligand) gold(III) complexes. JoumoJ of Organometallic Chemistry, 282(1), 145-148. 

Shaw, C.F. Ill, Schaeffer, N.A., Elder, R.C., Eidsness, M.K., Trooster, J.M. and Calls, G.H.M. (1984) Bovine serum albumin-gold thiomalate complex gold-197 Moessbauer, EXAFS and XANES, electrophoresis, sulfur-35 radiotracer, and fluorescent probe competition studies. Journal of the American Chemical Society, 106, 3511-3521. 

A researcher in the field of heterogeneous catalysis, alongside the important studies of catalysts chemical properties (i.e., properties at a molecular level), inevitably encounters problems determining the catalyst structure at a supramolecular (textural) level. A powerful combination of physical and chemical methods (numerous variants x-ray diffraction (XRD), IR, nuclear magnetic resonance (NMR), XPS, EXAFS, ESR, Raman of Moessbauer spectroscopy, etc. and achievements of modem analytical chemistry) may be used to study the catalysts chemical and phase molecular structure. At the same time, characterizations of texture as a fairytale Cinderella fulfill the routine and very frequently senseless work, usually limited (obviously in our modem transcription) with electron microscopy, formal estimation of a surface area by a BET method, and eventually with porosimetry without any thorough insight. 

In recent years the Moessbauer effect has been used to study the mineral matter in coal (5-9). These investigations were essentially concerned with the identification of the minerals as... 

Data acquisition and least square fitting of the Moessbauer spectrum were done in a microprocessor based computer (Promeda). The source used was a 220 mCi - Co Rh. All the isomer shifts in this paper are given relative to a-Fe at room temperature. The coal used in the study was IL6 (pyritic sulfur 2.0 and organic sulfur = 2.0 %) and the solvent was a SRC-II heavy distillate 850+. A specially designed reactor for Moessbauer measurements was used. The temperature stability was 1%. The stoichiometries of the pyrrhotites were determined by Moessbauer and x-ray diffraction methods (10). All the samples were also measured at low temperatures (13 K) for better resolution of all the components, using a closed-cycle helium refrigerator. 

The potential of the SW approach to systematize inneratomic properties and processes can be easily illustrated by reconsidering chemically induced nuclear lifetime variations which, among others, are of relevance to the calibration problem of Moessbauer isomer shifts. Highly excited atom states carrying single or multiple vacancies in inner shells form another promising subject of SW simulations. In the latter case the results of a DV-Xa study of the K-shell x-ray satellite intensities of metal fluorides can be used for a comparative assessment of both methods. 

Schulz, C.E., R. Rutter, J.T. Sage, P.G. Debrunner, and L.P. Hager (1984). Moessbauer and electron paramagnetic resonance studies of horseradish peroxidase and its catalytic intermediates. Biochemistry 23, 4743-4754. 

Simaan, A.J., F. Banse, J.-J. Girerd, K. Wieghardt, and E. Bill (2001). The electronic structure of nonheme iron(llI)-hydroperoxo and iron(llI)-peroxo model complexes studied by Moessbauer and electron paramagnetic resonance spectroscopies. Inorg. Chem. 40, 6538-6540. 

Sat] Satula, D., Szymanski, K., Waliszewski, J., Dobrzynski, L., Pras, B., Moessbauer and X-ray Diffraction Study of Cr-Fe-Mn Alloys , Molecular Physics Reports Osrodek Wydawnictw Naukowych, 30, 151-158 (2000) cited from abstract... 

Fm] Fruehart, D., Chaudouet, R, Fruchart, R., Rouault, A., Senateur, J.P., Structural Studies on Cementite-Type Compounds Effects of Hydrogen on FeaC Followed by Neutron Diffiac-tion. Moessbauer Spectroscopy on FeCo2B et C03B Doped with Fe-57 , J. Solid State Chem., 51, 246-252 (1984) (Crys. Structure, Experimental, 35)... 

LC. Ram, P.S.M. Tripathi, S.P. Mishra, Moessbauer spectroscopic characterization and studies on their transformations of ironbearing minerals during combustion of coals correlation with fouling and slagging, Fuei Process. Technol. 1995, 42, 47-60. 

Stoian SA, Vela J, Smith JM, et al. Moessbauer and computational study of an N2-bridged diiron diketiminate complex parallel alignment of the iron spins by direct antiferromagnetic exchange with activated dinitrogen. J Am Chem Soc. 2006 128 10181-10192. 

Mah] Mahmood, S.H., Gharaibeh, M.A., Saleh, A.S., Moessbauer and Stractural Studies of FeAli ,-Ty , Solid State Commun., 95(4), 263-266 (1995) (Crys. Stmcture, Experimental, 10)... 

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