Crystalline silicates and process for the production thereof

Claim 2

A process for producing a crystalline silicate, when determined after calcination in the air at 550° C., having a composition represented by the general formula (I), pM.sub.2/n O.Al.sub.2 O.sub.3.qSiO.sub.2 (I) wherein M represents at least one element selected from hydrogen, alkali metals, and alkaline earth metals, n represents the valence of M, and p and q are chosen within the ranges of 0.3≦p≦3.0, q≦10, and giving a principal X-ray diffraction pattern as shown in Table 1, below: TABLE 1 ______________________________________ Lattice Spacing d (Å) Relative Intensity ______________________________________ 11.31 ± 0.2 strong 10.92 ± 0.2 very strong 7.83 ± 0.2 medium 4.51 ± 0.15 very strong 4.24 ± 0.1 strong 3.89 ± 0.1 strong 3.73 ± 0.1 medium 3.69 ± 0.1 very strong 3.61 ± 0.1 very strong 3.53 ± 0.07 medium 3.43 ± 0.07 strong 2.52 ± 0.05 medium ______________________________________ which process consists essentially of reacting an aqueous mixture consisting essentially of (a) a silica source, (b) an alumina source, (c) an alkali metal and/or alkaline earth metal source, and (e) monoethanolamine in the following molar ratios: silica/alumina≧10/1 monoethanolamine/water=0.1/1 to 5/1, monoethanolamine/silica=2/1 to 100/1, hydroxyl ion/silica=0.01/1 to 0.5/1 excluding hydroxyl ions resulting from monoethanolamine, at a temperature of 100° to 300° C. until the crystalline silicate is formed.

Claim 3

The process of claim 1, wherein M is sodium.

Claim 4

The process of claim 1, wherein M is potassium.

Claim 5

The process of claim 1, wherein M is calcium.

Claim 6

The process of claim 1, wherein said crystalline silicate has the formula 0.9Na 2 O.Al 2 O 3 .74.OSiO 2 .

Claim 7

A process for producing a crystalline silicate, when determined after calcination in the air at 550° C., having a composition represented by the general formula (I), pM.sub.2/n O.Al.sub.2 O.sub.3.qSiO.sub.2 (I) wherein M represents at least one element selected from hydrogen, alkali metals, and alkaline earth metals, n represents the valence of M, and p and q are chosen within the ranges of 0.3 p 3.0, q 10, and giving a principal X-ray diffraction pattern as shown below: ______________________________________ Lattice Spacing d (Å) Relative Intensity ______________________________________ 11.31 ± 0.2 strong 10.92 ± 0.2 very strong 10.03 ± 0.2 weak 7.83 ± 0.2 medium 6.08 ± 0.15 weak 5.61 ± 0.15 weak 5.24 ± 0.15 weak 4.90 ± 0.15 weak 4.51 ± 0.15 very strong 4.42 ± 0.1 weak 4.24 ± 0.1 strong 4.14 ± 0.1 weak 3.89 ± 0.1 strong 3.73 ± 0.1 medium 3.69 ± 0.1 very strong 3.61 ± 0.1 very strong 3.53 ± 0.07 medium 3.43 ± 0.07 strong 3.32 ± 0.07 weak 3.16 ± 0.07 weak 2.97 ± 0.07 weak 2.83 ± 0.05 weak 2.52 ± 0.05 medium ______________________________________ which process consists essentially of reacting an aqueous mixture consisting essentially of (a) a silica source, (b) an alumina source, (c) an alkali metal and/or alkaline earth metal source, and (e) monoethanolamine in the following molar ratios: silica/alumina 10/1 monoethanolamine/water=0.1/1 to 5/1 monoethanolamine/silica=2/1 to 100/1 hydroxyl ion/silica=0.01/1 to 0.5/1 excluding hydroxyl ions resulting from monoethanolamine at a temperature of 100° to 300° C. until the crystalline silicate is formed.

Claim 8

A process for producing a crystalline silicate, when determined after calcination in the air at 550° C., having a composition represented by the general formula (I), pM.sub.2/n O.Al.sub.2 O.sub.3.qSiO.sub.2 (I) wherein M represents at least one element selected from hydrogen, alkali metals, and alkaline earth metals, n represents the valence of M, and p and q are chosen within the ranges of 0.3 p 3.0, q 10, and giving a principal X-ray diffraction pattern as shown below: ______________________________________ Lattice Spacing d (Å) Relative Intensity ______________________________________ 11.31 ± 0.2 strong 10.92 ± 0.2 very strong 10.03 ± 0.2 weak 7.83 ± 0.2 medium 6.08 ± 0.15 weak 5.61 ± 0.15 weak 5.24 ± 0.15 weak 4.90 ± 0.15 weak 4.51 ± 0.15 very strong 4.42 ± 0.1 weak 4.24 ± 0.1 strong 4.14 ± 0.1 weak 3.89 ± 0.1 strong 3.73 ± 0.1 medium 3.69 ± 0.1 very strong 3.61 ± 0.1 very strong 3.53 ± 0.07 medium 3.43 ± 0.07 strong 3.32 ± 0.07 weak 3.16 ± 0.07 weak 2.97 ± 0.07 weak 2.83 ± 0.05 weak 2.52 ± 0.05 medium ______________________________________ which process consists essentially of reacting an aqueous mixture consisting essentially of (a) a silica source, (b) an alumina source, (c) an alkali metal and/or alkaline earth metal source, and (e) monoethanolamine in the following molar ratios: silica/alumina 10/1 monoethanolamine/water=0.1/1 to 5/1 monoethanolamine/silica=2/1 to 100/1 hydroxyl ion/silica=0.01/1 to 0.5/1 excluding hydroxyl ions resulting from monoethanolamine at a temperature of 100° to 300° C. until the crystalline silicate is formed.

Claim 9

The process of claim 6, wherein M is sodium.

Claim 10

The process of claim 6, wherein M is potassium.

Claim 11

The process of claim 6, wherein M is calcium.

Claim 12

The process of claim 6, wherein said crystalline silicate has the formula 0.9Na 2 O.Al 2 O 3 .74.OSiO 2 .