Silver-containing tobermorite
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United States of America Patent
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Aug 8, 1995
Grant Date -
N/A
app pub date -
Nov 1, 1993
filing date -
Mar 6, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A novel silver-containing tobermorite usable in place of silver-, copper-or zing-incorporating zeolites and having ethylene-adsorbing ability and antibacterial properties. Stated more particularly, a silver-containing tobermorite having a composition of [Ca.sub.5-Y/2 Ag.sub.Y+Z M.sub.x-z (Si.sub.6-x Al.sub.x O.sub.18 H.sub.2).4H.sub.2 O, 0.ltoreq.X.ltoreq.1, 0.001.ltoreq.Y.ltoreq.2, 0.ltoreq.Z.ltoreq.0.1, M is a monovalent cation] and prepared from a tobermorite [Ca.sub.5 M.sub.x (Si.sub.6-x Al.sub.x O.sub.18 H.sub.2).4H.sub.2 O, 0.ltoreq.X.ltoreq.1, M is as defined above] by exchanging Ca.sup.2+, or Ca.sup.2+ and a monovalent cation which are interlayer ions of the tobermorite for silver ion. The silver-containing tobermorite is excellent in heat resistance, water resistance and mechanical strength, and also outstanding in ethylene-adsorbing ability and antibacterial properties.
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