Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Solid-state carbon-13 nuclear magnetic resonance

Inbar, Y., Chen, Y., and Hadar, Y. (1989). Solid-state carbon-13 nuclear magnetic resonance and infrared spectroscopy of composted organic matter. Soil Sci. Soc. Am. J. 53, 1695-1701. [Pg.212]

Dria, K.J., Sachleben, J.R., and Hatcher, P.G., Solid-state carbon-13 nuclear magnetic resonance of humic acids at high magnetic field strengths, J. Environ. Qual., 31, 393, 2002. [Pg.150]

M Stoltz, DW Oliver, PL Wessels, AA Chalmers. High-resolution solid state carbon-13 nuclear magnetic resonance spectra of mofebutazone, phenylbutazone, and oxyphenbutazone in relation to X-ray crystallographic data. J Pharm Sci 80 357-362, 1991. [Pg.511]

Tanner, S.T., Chanzy, H., Vincendon, M. et al (1990) High-resolution solid-state carbon-13 nuclear magnetic resonance study of chitin. Macromolecules, 23, 3576-3583. [Pg.79]

Quantitative characterization of humic substances by solid-state carbon-13 nuclear magnetic resonance. 2000 64 873-884. [Pg.148]

Simpson, M. J., and Hatcher, P. G. (2004). Determination of black carbon in natural organic matter by chemical oxidation and solid-state 13C nuclear magnetic resonance spectroscopy. Org. Geochem. 35, 923-935. [Pg.302]

Figure 15.9. 13C CPMAS NMR spectrum of humin extracted from a brown chernozem soil from Western Canada. The characteristic doublet in the unsubstituted aliphatic region is characteristic of methylene carbon (28-34 ppm) and shows the presence of both amorphous (soft) domains at 29 ppm and crystalline (rigid) domains at 33 ppm in soil humin. Reprinted from Simpson, M. I, and Johnson, R C. E. (2006). Identification of mobile aliphatic sorptive domains in soil humin by solid-state 13C nuclear magnetic resonance. Environ. Toxi. Chem. 25, 52-57, with permission from the Society of Environmental Toxicology and Chemistry. Figure 15.9. 13C CPMAS NMR spectrum of humin extracted from a brown chernozem soil from Western Canada. The characteristic doublet in the unsubstituted aliphatic region is characteristic of methylene carbon (28-34 ppm) and shows the presence of both amorphous (soft) domains at 29 ppm and crystalline (rigid) domains at 33 ppm in soil humin. Reprinted from Simpson, M. I, and Johnson, R C. E. (2006). Identification of mobile aliphatic sorptive domains in soil humin by solid-state 13C nuclear magnetic resonance. Environ. Toxi. Chem. 25, 52-57, with permission from the Society of Environmental Toxicology and Chemistry.
Gerstein BC, Dybowski CR (1985) Transient techniques in NMR of solids an introduction to theory and practice Academic Press, Orlando, 295 pp Hatcher PG (1987) Chemical structural studies of natural lignin by dipolar dephased solid-state nC nuclear magnetic resonance Org Geochem 11 31-39 Hatfield GR, Maciel GE, Erbatur O, Erbatur G (1987) Qualitative and quantitative analysis of solid lignin samples by carbon-13 nuclear magnetic resonance spectrometry Anal Chem 59 172-179... [Pg.160]

Usami T, Itoh T, Ohtani H, Tsuge S, Structural study of polyacrylonitrile fibers during oxidative thermal degradation by pyrolysis- gas chromatography, solid-state C nuclear magnetic resonance and Fourier transform infrared spectroscopy. Macromolecules, 23, 2460 465, 1990. Bhat GS, Cook FL, Abhiraman AS, Peebles LH Jr., New aspects in the stabilization of acrylic fibers for carbon fibers. Carbon, 28(2,3), 377-385, 1990. [Pg.268]

Compilation of Experimental Reports on Solid-State NMR (Nuclear Magnetic Resonance) Spectroscopy Applied to the Study of Carbon Materials... [Pg.130]

Similar methods are available that are based on solid-state proton nuclear magnetic resonance spectroscopy. Proton methods are less discriminating than the equivalent carbon-13 method, being based on a two-phase model of semicrystalline morphology. In their favor, they are several orders of magnitude faster than the carbon-13 method and the equipment required is much cheaper. [Pg.303]

Chevallier F., Letellier M., Morcrette M., Tarascon J.M., Frackowiak E., Rouzaud J.N., Beguin F. In situ 7Li-Nuclear Magnetic Resonance Observation of Reversible Lithium Insertion into Disordered Carbons, Electrochem. Solid State Lett. 2003 6 A225-8. [Pg.434]

In an attempt to delineate the degree of preservation of lignin in pre-Tertiary coal, we examined numerous coalified wood samples ranging in age from Carboniferous to Cretaceous. The samples were initially screened by solid-state l C nuclear magnetic resonance to detect the possible presence of methoxyl carbon. Once such carbons were detected, the samples were subjected to analytical pyrolysis to determine the relative yields of methoxyphenols which would provide an indication of the state of preservation of the lignin-derived structu units. We report here on the identification of lignin-derived methoxyphenols in the coalified wood samples selected for analytical pyrolysis. [Pg.10]

Martinez-Richa, A. and Joseph-Nathan, P., Carbon-13 CP-MAS nuclear magnetic resonance studies of teas, Solid State Nucl Mag., 23, 119, 2003. [Pg.123]

K. J. D. MacKenzie and R. H. Meinhold, Thermal decomposition of dolomite (calcium magnesium carbonate) studied by Mg solid-state nuclear magnetic resonance. Ther-mochim. Acta, 1993, 230,331-337. [Pg.109]

The application of nuclear magnetic resonance (NMR) spectroscopy to polymer systems has contributed to significant advances in understanding of their structure and dynamical properties at the molecular level. From the analytical point of view, NMR spectroscopy is particularly suitable for a determination of the polymer structure by direct observation of the protons and carbons in different structural moieties. However, until the mid-1970s the application of this technique was limited to polymer solutions and to some elastomers in the solid state with a relatively high degree of the molecular mobility which allows the observation of the motionally narrowed absorption signals. [Pg.8]

Hays GR. 1982. High resolution carbon-13 solid-state nuclear magnetic resonance spectroscopy. Analyst 107 241-252. [Pg.306]

S. Kaplan, F. Jansen, M. Machonkin Characterization of amorphous carbon-hydrogen films by solid-state nuclear magnetic resonance. Appl. Phys. Lett. 47, 750 (1985)... [Pg.282]


See other pages where Solid-state carbon-13 nuclear magnetic resonance is mentioned: [Pg.169]    [Pg.171]    [Pg.186]    [Pg.160]    [Pg.95]    [Pg.274]    [Pg.296]    [Pg.150]    [Pg.4]    [Pg.64]    [Pg.302]    [Pg.109]    [Pg.10]    [Pg.254]    [Pg.31]    [Pg.514]    [Pg.232]    [Pg.10]    [Pg.238]    [Pg.238]    [Pg.186]    [Pg.71]    [Pg.208]    [Pg.118]    [Pg.538]    [Pg.169]    [Pg.171]    [Pg.186]    [Pg.71]    [Pg.124]    [Pg.236]    [Pg.141]    [Pg.113]    [Pg.760]    [Pg.125]    [Pg.379]    [Pg.160]   


SEARCH



Carbon magnetization

Carbon nuclear magnetic resonance

Carbon solid state

Carbon-13 nuclear magnetic

Carbon-13, magnetic resonance

Carbons resonances

Nuclear magnetic resonance , solids

Resonant solids

Resonant states

Resonating states

Solid carbon

Solid state nuclear

Solid state nuclear magnetic

Solid state nuclear magnetic resonance

Solid-state nuclear magnetic resonance solids

© 2024 chempedia.info