Process for making a germanium-zeolite

Details Process for making a germanium-zeolite Process for making a germanium-zeolite

2004-12-27

2008-11-11

Sample, David R (Department: 1797)

Chemistry of inorganic compounds

Zeolite

Organic compound used to form zeolite

C423S707000, C423S713000, C423SDIG022

Reexamination Certificate

active

07449168

ABSTRACT:
This invention relates to a process for making a germanium-zeolite without using fluoride compounds. The zeolite is preferably a MFI-type structure, most preferably a ZSM-5 MFI zeolite. The germanium-zeolite is synthesized essentially in the absence of fluoride compounds from an aqueous gel containing a silica source, a germanium source, an aluminum source and a structure directing agent in the presence of an acid which does not contain fluorine, such as sulfuric acid, acetic acid, nitric acid, phosphoric acid hydrochloric acid or formic acid.

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van de Water et al., “Ge-ZSM-5: the Simultaneous Incorporation of Ge and Al into ZSM-5 Using Parallel Synthesis Approach,” J. Phys. Chem. B, 107, pp. 10423-10430, 2003.
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