Zobrazeno 1 - 10
of 174
pro vyhledávání: '"B.C. Gerstein"'
Autor:
B.C. Gerstein, Jian Zhi Hu, Jinuan Zhou, Chaohui Ye, Mark S. Solum, David M. Grant, Ronald J. Pugmire
Publikováno v:
Solid State Nuclear Magnetic Resonance. 6:63-71
Delayed acquisition of the proton NMR in selected organic molecular solids (L-alanine, durene, ethyl fumarate, and p-hydroxybenzoic acid) is shown to allow the observation of mobile species in the presence of relatively rigid bulk molecules. The mobi
Summary The conversion of ethylene to coke-precursors and coke on Pt/SiO 2 catalysts was studied using high-resolution solid state nuclear magnetic resonance (NMR) of carbon-13. The NMR techniques included cross-polarization with magic angle spinning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5facd10885bde4767ebbb8bbfb1806f
https://doi.org/10.1016/s0167-2991(08)62702-0
https://doi.org/10.1016/s0167-2991(08)62702-0
Autor:
B.C. Gerstein
Publikováno v:
Advances in Colloid and Interface Science. 23:45-66
The interactions which broaden the NMR of nuclei in powdered solids are discussed. The means of selective removal or attenuation of these interactions via rotations in spin space, or in real space are treated. Average Hamiltonian theory is used to de
Publikováno v:
Journal of the American Chemical Society. 101:4055-4058
The first cross-polarization NMR experiment between /sup 1/H and /sup 29/Si in the liquid state with rare-spin observation is reported. A line-shape-fitting technique is employed to directly measure the spin coupling constant, J, from the experimenta
Publikováno v:
Zeolites. 9:104-110
Infrared spectra in the framework absorption region reflect the various degrees of offretite and erionite character of several zeolites belonging to the offretite-erionite family. I.r. spectra of materials rich in offretite contained an absorption ba
Publikováno v:
Chemical Physics Letters. 52:341-344
The proton NMR is powdered samples of H 2 O(s) and H 2 S(s) have been studied by multiple pulse line narrowing techniques. The resultant spectra provide nuclear magnetic shielding tensors that are approximately axially symmetric. The anisotropy, Δσ
Publikováno v:
Journal of Physics and Chemistry of Solids. 28:267-270
The heat capacity of Mg 2 Sn has been measured in the range 5–300°K, and the lattice heat capacity, Debye temperature and thermodynamic functions have been tabulated. The following values were found for the thermodynamic functions at 298.15°K: S
Publikováno v:
Journal of Physics and Chemistry of Solids. 25:177-182
Publikováno v:
Journal of Physics and Chemistry of Solids. 27:1161-1165