Zobrazeno 1 - 10
of 60
pro vyhledávání: '"William L. Earl"'
Publikováno v:
The Journal of Physical Chemistry B. 104:5890-5896
29Si MAS NMR spectra for TS-1, TiMCM-41, and Ti-β, and 31P MAS NMR spectrum for TiAlPO4-11 have been obtained before and after CO treatment that reduces Ti4+ to Ti3+. We have used the large paramag...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b75d926230dfe12cd96a0d968d9f2c75
https://doi.org/10.1021/jp9936695
https://doi.org/10.1021/jp9936695
Autor:
Ghansham Panjabi, Tanja Pietrass, Kevin C. Ott, Bruce C. Gates, and William L. Earl, Andrea Labouriau, Bryan Enderle
Publikováno v:
Journal of the American Chemical Society. 121:7674-7681
[Ir4(CO)12] and [Ir6(CO)16] were synthesized in the pores of zeolite NaY by reductive carbonylation of sorbed [Ir(CO)2(acac)], and [Rh6(CO)16] was similarly synthesized from [Rh(CO)2(acac)]. The supported metal carbonyl clusters were decarbonylated t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::842404cb1b117644864aacb0dea9c672
https://doi.org/10.1021/ja990532j
https://doi.org/10.1021/ja990532j
Publikováno v:
The Journal of Physical Chemistry B. 103:4323-4329
One- and two-dimensional NMR spectra of 129Xe sorbed in NaY zeolite at a loading of approximately 1 Xe atom/4 α-cages were obtained as a function of temperature. One-dimensional spectra were measured over the range of 60−300 K, by far the largest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa666dc0d03324ca1d179d8cb3f951c7
https://doi.org/10.1021/jp9846835
https://doi.org/10.1021/jp9846835
Publikováno v:
The Journal of Physical Chemistry B. 102:2897-2904
We have related the 29Si MAS NMR chemical shifts of titanosilicates and highly siliceous zeolites linearly with structural factors. Good correlations in titanosilicates were obtained using the model proposed by Sherriff et al.,1,2 where the chemical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aefa4cf28658ef3da38d2a80352ab5e0
https://doi.org/10.1021/jp9716703
https://doi.org/10.1021/jp9716703
Autor:
Andrea Labouriau, William L. Earl
Publikováno v:
Chemical Physics Letters. 270:278-284
We report 47Ti and 49Ti NMR spectra of powdered samples of the three common phases of titania, TiO2. The linewidths are dominated by the electric quadrupole interaction. The relative linewidths of the three samples cannot be explained in terms of sim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::012386b10a656c0702a0b985f281cb65
https://doi.org/10.1016/s0009-2614(97)00374-6
https://doi.org/10.1016/s0009-2614(97)00374-6
Publikováno v:
Physical Review B. 54:9952-9959
Nuclear-spin-lattice relaxation time measurements were made on $^{29}\mathrm{Si}$ nuclei in a series of 2:1 natural clay minerals. The magnetization recovery was found to be nonexponential. The nuclear relaxation arises from coupling to fixed paramag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee7f8f71984a77d5348076f5c7fb6568
https://doi.org/10.1103/physrevb.54.9952
https://doi.org/10.1103/physrevb.54.9952
Publikováno v:
Journal of Magnetic Resonance, Series A. 116:139-144
In the design and construction of NMR probes, it is frequently useful to have the tuning elements remote from the NMR coil and sample space. In such cases, a transmission line is an integral part of the resonance circuit. The characteristics of trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adaf8fc9c91f0003dc02eb511994bcdc
https://doi.org/10.1006/jmra.1995.0001
https://doi.org/10.1006/jmra.1995.0001
Publikováno v:
Clays and Clay Minerals. 43:697-704
A series of natural clays, including 1:1 layer silicates (serpentines, kaolin minerals), smectites, vermiculite, micas, talc, pyrophyllite, sepiolite, and palygorskite, were studied by “F magic-angle spinning (MAS) nuclear magnetic resonance (NMR)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c5bdd64e324ef771e18c69a4a70c53
https://doi.org/10.1346/ccmn.1995.0430606
https://doi.org/10.1346/ccmn.1995.0430606
Publikováno v:
The Journal of Physical Chemistry. 98:4919-4922
Dynamics and structure of tri-n-butyltin fluoride in n-hexane solutions were probed using (tin-119) nuclear magnetic resonance spin relaxation methodologies. Significant relaxation-induced polarization transfer effects were observed and exploited. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f4549895231184a1f365583a75cc81
https://doi.org/10.1021/j100069a025
https://doi.org/10.1021/j100069a025