scholarly journals Versatile IR Spectroscopy Combined with Synchrotron XAS-XRD: Chemical, Electronic, and Structural Insights during Thermal Treatment of MOF Materials

2018 ◽  
Vol 2018 (17) ◽  
pp. 1847-1853 ◽  
Author(s):  
Satoshi Hinokuma ◽  
Geir Wiker ◽  
Takuya Suganuma ◽  
Atul Bansode ◽  
Dragos Stoian ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Ir Spectroscopy ◽  
Structural Insights

Synthesis, structure and thermal expansion of the phosphates M0.5+x M′x Zr2−x (PO4)3 (M, M′–metals in oxidation state +2)

2017 ◽  
Vol 89 (4) ◽  
pp. 523-533 ◽  
Author(s):  
Elena Asabina ◽  
Vladimir Pet’kov ◽  
Pavel Mayorov ◽  
Dmitriy Lavrenov ◽  
Igor Schelokov ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Thermal Treatment ◽  
Ir Spectroscopy ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structural Types ◽  
The Difference

AbstractThe phosphates M0.5+x M′x Zr2−x (PO4)3 (M–Ca, Mn, Co, Sr, Cd, Ba, Pb; M′–Mg, Mn, Co) were synthesized by sol-gel method with the following thermal treatment of reaction mixtures. X-ray diffraction, IR spectroscopy and electron microprobe analysis showed that the obtained phosphates crystallized in Sc2(WO4)3 (SW) and NaZr2(PO4)3 (NZP) structural types. Both types of crystal structures are based on a framework comprised of octahedra and tetrahedra, the difference between them is fragments orientation. Thermal expansion of the phosphates was studied in the temperature range 20–800°C. Some compounds were found to belong to low-expanding materials (αav ~2·10−6°C−1).

The 3.65 A phase, MgSi(OH)6: Structural insights from DFT-calculations and T-dependent IR spectroscopy

2012 ◽  
Vol 97 (7) ◽  
pp. 1043-1048 ◽  
Author(s):  
B. Wunder ◽  
S. Jahn ◽  
M. Koch-Muller ◽  
S. Speziale
Keyword(s):  
Ir Spectroscopy ◽  
Dft Calculations ◽  
Structural Insights

Thermal and IR spectroscopic characterization of Kamotoïte

1989 ◽  
Vol 54 (5) ◽  
pp. 1263-1268 ◽  
Author(s):  
Irma Lía Botto ◽  
Alejandro Cesar García ◽  
Michel Deliens
Keyword(s):  
Rare Earth ◽  
Thermal Treatment ◽  
Ir Spectroscopy ◽  
Spectroscopic Characterization ◽  
Uranyl Ion ◽  
Ir Spectroscopic

Kamotoïte-(Y), a new uranyl and rare earth carbonate, has been studied by thermal treatment. The mineral has also been characterized by IR spectroscopy and the presence of the bidentate binding of carbonate to uranyl ion has been confirmed. Likewise, the U-O bond lenght in the uranyl group can be estimated by IR measurements.

scholarly journals Structural Insights to Toxic Amylin Oligomers from 2D IR Spectroscopy

2018 ◽  
Vol 114 (3) ◽  
pp. 406a
Author(s):  
Kacie Rich ◽  
Megan Petti ◽  
Martin Zanni
Keyword(s):  
Ir Spectroscopy ◽  
2D Ir ◽  
Structural Insights

Pollutant Identification by Selected Area Electron Diffraction

1974 ◽  
Vol 32 ◽  
pp. 532-533
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson ◽  
C. W. Walker
Keyword(s):  
Thermal Treatment ◽  
Electron Diffraction ◽  
Sample Preparation ◽  
Crystal Structures ◽  
Water Samples ◽  
Environmental Samples ◽  
Short Review ◽  
Selected Area Electron Diffraction ◽  
Multiple Component

Selected area electron diffraction (SAD) has been used successfully to determine crystal structures, identify traces of minerals in rocks, and characterize the phases formed during thermal treatment of micron-sized particles. There is an increased interest in the method because it has the potential capability of identifying micron-sized pollutants in air and water samples. This paper is a short review of the theory behind SAD and a discussion of the sample preparation employed for the analysis of multiple component environmental samples.

Development of Crystallinity in Turbostratic Boron Nitride Derived from Polymeric Precursors

1991 ◽  
Vol 49 ◽  
pp. 954-955
Author(s):  
X. Qiu ◽  
A. K. Datye ◽  
T. T. Borek ◽  
R. T. Paine
Keyword(s):  
Thermal Treatment ◽  
Boron Nitride ◽  
Diffraction Pattern ◽  
Polymeric Precursors ◽  
Polymer Precursors ◽  
Diffuse Ring

Boron nitride derived from polymer precursors is of great interest for applications such as fibers, coatings and novel forms such as aerogels. The BN is prepared by the polymerization of functionalized borazine and thermal treatment in nitrogen at 1200°C. The BN powders obtained by this route are invariably trubostratic wherein the sheets of hexagonal BN are randomly oriented to yield the so-called turbostratic modification. Fib 1a and 1b show images of BN powder with the corresponding diffraction pattern in fig. 1c. The (0002) reflection from BN is seen as a diffuse ring with occational spots that come from crystals of BN such as those shown in fig. 1b. The (0002) lattice fringes of BN seen in these powders are the most characteristic indication of the crystallinity of the BN.

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