Inorganic microporous solids and a process for their preparation
AssigneeBayer Aktiengesellschaft
InventorsWolfgang Schnick, Jan Lucke
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Abstract
This invention relates to inorganic microporous solids having a framework structure of AX.sub.4 -tetrahedrons linked by their corners, wherein A denotes at least one electropositive element selected from the group consisting of Be, B, Al, Ga, C, Si, Ge, P, As and S, and at least 10 of the X atoms are nitrogen. The invention also relates to a process for the preparation of these solids.
Claims16
Inorganic microporous solids having a three-dimensional framework structure which corresponds to a zeolite structure, said structure consisting of AX.sub.4 -tetrahedrons linked by their corners, wherein the solids consist of at least three different elements and A is one or more electropositive elements selected from the group consisting of Be, B, Al, Ga, C, Si, Ge, P, As and S, and at least 10% of the X atoms are nitrogen, wherein the microporous solids have a pore size of from 0.2 to 5 nm.
A process for the preparation of an inorganic solid having the general formula M.sub.x H.sub.y [A.sub.12 N.sub.24 ]Z.sub.z wherein
- x=0-8,
- y=0 to 14,
- z=0 to 2,
- M=metal cations carrying 1-, 2-, 3- or 4- charges,
- Z=anions carrying 1-, 2-, 3- or 4- charges and
- Z=at least 10 atoms-% of phosphorus, and the remainder required to make up the 100 atoms-% consists of at least one of aluminium and silicon,
- and the solid demonstrates electroneutrality, said process comprising reacting a substance containing or forming A--N and optionally containing Z, in which the ratio of A to N is from 1:1 to 1:2, with a metal halide compound MZ.sub.n wherein n is the valency of the metal M, the reaction being carried out in the presence of at least one of NH.sub.3 and NH.sub.4 Z so as to reduce the ratio of A to N to 1:2 if it is greater than this ratio.
Inorganic microporous solids having a three-dimensional framework structure which corresponds to a zeolite structure, said structure consisting of AX.sub.4 -tetrahedrons linked by their corners, wherein the solid has the general composition M.sub.x H.sub.y [A.sub.12 N.sub.24 ]Z.sub.z, wherein
- x=0 to 8,
- y=0 to 14,
- z=0 to 2,
- M=metal cations carrying 1-, 2-, 3- or 4-charges,
- Z=anions carrying 1-, 2-, 3- or 4-charges, and
- A contains at least 10 atoms-% of phosphorus, and the remainder required to make up the 100 atoms-% consists of at least one of aluminum and silicon, and the overall composition demonstrates electroneutrality.
Dependencies are inferred from the claim text.