Synthetic fraipontite and process for preparation thereof

Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing

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423327, C01B 3320

Patent

active

046264205

ABSTRACT:
An oxide or hydroxide mixture or coprecipitate having a three-component oxide composition comprising 5 to 45 mole % of SiO.sub.2, 35 to 65 mole % of ZnO and 0 to 60 mole % of Al.sub.2 O.sub.3 is heated in the presence of water to form a crystal of the fraipontite type.
The obtained synthetic mineral has a fraipontite type crystal structure and has a high whiteness and a large specific surface area. For example, this synthetic mineral is valuable as a color developer for a leuco dye.

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