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Title: Cesium titanium silicate and method of making

Patent ·
OSTI ID:870768

The invention is the new material, a ternary compound of cesium, silica, and titania, together with a method of making the ternary compound, cesium titanium silicate pollucite. More specifically, the invention is Cs.sub.2 Ti.sub.2 Si.sub.4 O.sub.13 pollucite which is a new crystalline phase representing a novel class of Ti-containing zeolites. Compositions contain relatively high Cs.sub.2 O and TiO.sub.2 loadings and are durable glass and ceramic materials. The amount of TiO.sub.2 and Cs.sub.2 that can be incorporated into these glasses and crystalline ceramics far exceeds the limits set for the borosilicate high level waste glass.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
DOE Contract Number:
AC06-76RL01830
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
US 5591420
OSTI ID:
870768
Country of Publication:
United States
Language:
English

References (2)

Immobilization of Cesium into Pollucite Structure by Hydrothermal Hot-Pressing journal January 1987
Fundamental Study on the Solidification of Cs + and Sr 2+ with Hydrous Ti IV Oxide Modified with Si and Zr journal January 1992