Accession Number:

ADA634175

Title:

27Al, 47,49Ti, 31P, and 13C MAS NMR Study of VX, GD, and HD Reactions with Nanosize Al2O3, Conventional Al2O3 and TiO2, and Aluminum and Titanium Metal

Descriptive Note:

Journal article

Corporate Author:

NEW YORK STRUCTURAL BIOLOGY CENTER INC NEW YORK NY

Report Date:

2007-01-01

Pagination or Media Count:

10.0

Abstract:

Reactions of VX, GD, and HD with Al2O3, TiO2 anatase and rutile, aluminum, and titanium metal powders have been studied by 27Al, 47,49Ti, 31P, and 13C MAS NMR. VX, GD, and HD hydrolyze on both nanosize and conventional Al2O3. A significant droplet size effect on the reaction kinetics is observed. For VX and GD, 27Al and 31P MAS NMR detect the formation of aluminum phosphonate complexes. Similarly, GD hydrolysis on TiO2 yields titanium phosphonate species as detected by 31P MAS NMR. Attempts at obtaining 47,49Ti NMR spectra of these species and those of titanium phosphonate model compounds at 14 T were marginally successful. 47,49Ti NMR spectra were obtainable for anatase and titanium metal thus, severe secondorder quadrupolar linebroadening is suspected for the titanium phosphonate complexes. 47,49Ti NMR spectra obtained for anatase at high magnetic field 17.5 and 21 T showed anticipated improvement in peak width and resolution. GD reacted with aluminum and titanium powder in the presence of water results in acid-dissolution of the metals and the formation of their respective metal phosphonates.

Subject Categories:

  • Physical Chemistry
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE