Method for the preparation of wide-pore crystalline aluminophosphate molecular sieve
AssigneeVereinigte Aluminium-Werke Aktiengesellschaft
InventorsMartin Buelow, Elke Jahn, Ulrich Schuelke, Karl Becker, Peter Kraak, Roland Thome, Arno Tissler
Life of this patent
Estimating the term…
Abstract
An economical and environmentally safe method for synthesizing wide-pore aluminophosphate crystalline molecular sieves primarily involves inorganic synthesis requiring no structure-directing organic templates. In addition to aluminium and phosphate, further components selected from group IV of the periodic table of elements can be added to synthesize multi-component phosphate molecular sieves such as germano-silico-alumino-phosphate crystalline structures.
Claims29
A method for the synthesis of a crystalline aluminophosphate molecular sieve with a microporous cavity structure having pore inlet openings of at least 0.8 nm and without the use of organic structure directing compounds, comprising the steps of:
- mixing an aqueous suspension of aluminum oxide to form a gelatinous reaction mixture;
- treating said gelatinous mixture with a phosphorus compound containing a --P--O--P--group;
- and
- heating said treated mixture to a temperature from between 95.degree. C. and 300.degree. C."
Dependencies are inferred from the claim text.