Zobrazeno 1 - 10
of 44
pro vyhledávání: '"A.L. Blumenfeld"'
Publikováno v:
Microporous and Mesoporous Materials. 31:9-21
Mesoporous sulfated and oxophosphated zirconia obtained at low pH from dodecyl sulfate and phosphate, respectively, and from zirconium isopropoxide were doped with aluminum. Aluminum is produced by the simultaneous hydrolysis of aluminum alkoxide.In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe6bac9a3a72f27864f23ccaa290d51c
https://doi.org/10.1016/s1387-1811(99)00053-0
https://doi.org/10.1016/s1387-1811(99)00053-0
Publikováno v:
Microporous and Mesoporous Materials. 21:19-25
The paramagnetic Co 2+ cations in partially exchanged CoNaY occupy sites I′ and II′ where their mobility is strongly restricted. The NMR resonance line of Si immediately adjacent to these sites disappears by broadening. The mobile Co 2+ cation in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2569886039c1168a8769fb607041a0df
https://doi.org/10.1016/s1387-1811(97)00029-2
https://doi.org/10.1016/s1387-1811(97)00029-2
Publikováno v:
The Journal of Physical Chemistry B. 101:1824-1830
The measurement of the numbers of Broensted and Lewis acid sites has been performed quantitatively using NH{sub 3} as an infrared molecular probe. The assignment of the deformation NH{sub 4}/{sup +} and NH{sub 3} bands has been carried out by compari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7b94713c6bdcb7a8efbd1cf13ff7072
https://doi.org/10.1021/jp9618542
https://doi.org/10.1021/jp9618542
Publikováno v:
Chemical Physics Letters. 231:491-498
Double-resonance spin-echo NMR techniques (SEDOR and REDOR) are used to study heteronuclear connectivities in two aluminas, gibbsite and super 5. In gibbsite (SEDOR), we describe a new procedure which allows one to estimate average internuclear dista
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee27618e781dfb66201cc94556532c0d
https://doi.org/10.1016/0009-2614(94)01299-7
https://doi.org/10.1016/0009-2614(94)01299-7
Autor:
G. A. Protsenko, Yu. N. Novikov, M. Casciola, U. Costantino, Alexandre S. Golub, A.L. Blumenfeld
Publikováno v:
Scopus-Elsevier
Intercalation compounds of α-zirconium phosphate with pyrazole and pyridazine have been investigated by solid state NMR measurements, in order to have information about the proton conduction mechanism.13C chemical shifts, obtained under CP MAS condi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eedfcb596f2ecbed54f908ff5bec681
https://doi.org/10.1016/0167-2738(94)90244-5
https://doi.org/10.1016/0167-2738(94)90244-5
Publikováno v:
Materials Science Forum. :613-617
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39bc9223c5403314ed656158742e50cc
https://doi.org/10.4028/www.scientific.net/msf.91-93.613
https://doi.org/10.4028/www.scientific.net/msf.91-93.613
Publikováno v:
Carbohydrate Polymers. 18:27-34
Pulsed-NMR, X-ray-diffraction and rheological measurements were used to study the structure of systems containing amylose, amylopectin, and their mixtures. It is shown that aggregates whose lifetime was compatible with or exceeded the relaxation time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bc33433990a64141bbd9360cfe101ac
https://doi.org/10.1016/0144-8617(92)90184-r
https://doi.org/10.1016/0144-8617(92)90184-r
Publikováno v:
Colloid & Polymer Science. 269:850-854
NMR and potentiometric methods revealed at least two types of interactions of Na+ and K+ ions with κ-carrageenan, viz., Coulombic interaction with polysaccharide sulfate groups, and a coordination one, leading, in the case of the Na+ ions, to format
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff2f4fd1b7d6e9f82e6a3f1200b956b2
https://doi.org/10.1007/bf00657452
https://doi.org/10.1007/bf00657452
Publikováno v:
Carbon. 34:97-99
The interaction of benzene with ternary GICs MHgC8 (M = K, Rb) has been investigated and new quaternary compounds MHgC8(C6H6)2 were obtained. X-ray data, Fourier transform of 001 reflections and spin-lattice relaxation measurements show that benzene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::986d7048f9e6f561364c5d31f1358b97
https://doi.org/10.1016/0008-6223(95)00140-9
https://doi.org/10.1016/0008-6223(95)00140-9
Relationships Between the Structure and the Surface Activity of Nano-Sized Alumina in Acid Catalysis
Publikováno v:
MRS Proceedings. 346
As shown in another communication to Symposium V, nano-sized aluminas enriched in pentacoordinated aluminum (Alv) are obtained through the limited hydrolysis of aluminum alkoxides. Here the surface properties of these aluminas are investigated from t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7f60d96aa2e5d6b5cf8577962e93554
https://doi.org/10.1557/proc-346-961
https://doi.org/10.1557/proc-346-961