9 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Zeolites"  
Results: 1 - 9
open access

Advanced waste forms research and development. First quarterly report

Description: Activities during the last two months are described. A significant portion of time was spent reviewing the literature on the Cs/sub 2/O-Al/sub 2/O/sub 3/-SiO/sub 2/ system, on the use of clays and zeolites for Cs-fixation of aqueous wastes, and on silicate-phosphate apatite structure crystal chemistry. The results from the latest group of compatibility studies (CS-runs) were used to modify the first demonstration supercalcine formulation so that it is more in line with the actual crystalline ph… more
Date: August 5, 1975
Creator: McCarthy, G. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiation damage of a glass-bonded zeolite waste form using ion irradiation.

Description: Glass-bonded zeolite is being considered as a candidate ceramic waste form for storing radioactive isotopes separated from spent nuclear fuel in the electrorefining process. To determine the stability of glass-bonded zeolite under irradiation, transmission electron microscope samples were irradiated using high energy helium, lead, and krypton. The major crystalline phase of the waste form, which retains alkaline and alkaline earth fission products, loses its long range order under both helium a… more
Date: December 5, 1997
Creator: Allen, T. R. & Storey, B. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Adsorption and desorption of sulfur dioxide on novel adsorbents for flue gas desulfurization. Final report, September 1, 1994--February 29, 1996

Description: A sol-gel granulation method was developed to prepare spherical {gamma}-alumina granular supports and supported CuO granular sorbents for flue gas desulfurization. The prepared {gamma}-alumina supported CuO sorbents exhibit desirable pore structure and excellent mechanical properties. The sorbents contain higher loading (30-40 wt. %) of CuO dispersed in the monolayer or sub-monolayer form, giving rise to a larger SO{sub 2} sorption capacity ({gt}20 wt.%) and a faster sorption rate as compared t… more
Date: August 5, 1996
Creator: Lin, Y.S. & Deng, S.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final report of research supported by DOE Grant No. DE-FG02-96ER14635: Photochemical studies of two component systems within the restricted spaces of zeolites.

Description: Most chemistry in nature occurs within a closed and confined space. In contrast to this time-evolved [m?] organic chemists have focused their interests in developing reaction methods in solution. The price for this is paid in terms of non-selectivity in product formation, expensive reagents, and enormous wastes. Eventually 'man-developed' solution methods to make molecules have to be replaced by more selective, more environmentally friendly, and less expensive strategies. One approach in this d… more
Date: May 5, 2002
Creator: Ramamurthy, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Motion and structure of water adsorbed in type-A zeolites.

Description: The motion of water adsorbed in Type-Azeotites has been measured using quasielastic and inelastic neutron spectroscopy. Changes in the charge-compensating cation has a dramatic effect on the low frequency vibrational spectrum, which has a well defined low frequency feature for sodium and lithium but no such peak is present for the case of potassium and calcium. At 297K the low frequency feature is still visible, while there is also quasielastic broadening of the elastic line due to diffusion of… more
Date: March 5, 1998
Creator: Trouw, F. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tunable composite membranes for gas separations. Quarterly technical progress report, May--July 1996

Description: Significant progress has been made in the synthesis and characterization of conducting polymer composite membranes for gas separations. Zeolite/polyalkylthiophene composite membranes have been prepared and characterized for zeolite NaY.
Date: August 5, 1996
Creator: Ferraris, J.P.; Balkus, K.J. Jr. & Musselman, I.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct catalytic conversion of methane and light hydrocarbon gases. Quarterly report No. 5, November 16, 1987--January 15, 1988

Description: The goal of this research is to develop catalysts that directly convert methane and light hydrocarbons to intermediates that later can be converted to either liquid fuels or value-added chemicals, as economics dictate. During this reporting period, we have synthesized and tested several novel catalysts for methane reforming (Tasks 1 and 2) and for partial oxidation of methane (Tasks 3 and 4). We started to test a mixed metal system, an FeRu{sub 3} cluster. This catalyst was supported both on ze… more
Date: February 5, 1988
Creator: Wilson, R. B., Jr. & Wai, Chan Yee
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen