Process for the preparation of crystalline aluminum silicate compounds using pyridine and a quaternary ammonium compound

Claim 2

A process for the preparation of a mixture of two crystalline aluminum silicates which comprises crystallizing an aqueous forming solution comprising one or more silicon compounds, one or more aluminum compounds, one or more compounds of metals of Group 1A of the Periodic Table (MX) a quaternary ammonium compound and a nitrogen compound from the group consisting of pyridine, a C 1 -C 4 alkyl pyridine or a substituted C 1 -C 4 alkyl pyridine compound and at elevated temperatures, subsequently separating said crystallized silicate from said aqueous solution and drying said removed mixture of two crystalline aluminum silicates as represented by the X-ray diffraction patterns of Tables I or II.

Claim 3

The process of claim 1 wherein said silicon compound is SiO 2 , said aluminum compound is Al 2 O 3 , said pyridine is represented by (RN) and said quaternary ammonium compound is represented by R 4 NY wherein R is the same or different C 1 to C 20 alkyl groups or C 1 to C 20 substituted alkyl groups and wherein y is equal to an anion of a mineral acid or a hydroxyl ion and where said compounds are present in the following molar relationships RN:R 4 NY=6-3,000 SiO 2 :R 4 NY=200-10,000 SiO 2 :Al 2 O 3 =60-250 SiO 2 :Mx<10, and H 2 O:SiO 2 =5-65.

Claim 4

The process of claim 2 wherein the resultant mixture of two crystalline aluminum silicates possesses an X-ray diffraction pattern as follows: ______________________________________ D-space I/I.sub.max' % ______________________________________ 9.39 52 3.97 76 3.92 49 3.85 100 3.81 76 3.76 69 3.71 49 3.64 56 3.53 89 3.46 74 ______________________________________

Claim 5

The process of claim 2 wherein the resultant mixture of two crystalline aluminum silicates possesses an X-ray diffraction pattern as follows: ______________________________________ D-space I/I.sub.max' % ______________________________________ 11.10 50 9.97 25 3.85 100 3.81 69 3.74 41 3.71 59 3.64 37 3.52 16 3.44 22 ______________________________________

Claim 6

The process of claim 1 wherein said pyridine and said quaternary ammonium compound are present in the starting aqueous forming solution in a molar ratio of from 25-600.

Claim 7

The process of claim 1 wherein said MX compound represents at least one M n Z and at least one MOH in which M is equal to an alkali metal ion, Z is equal to an anion of a mineral acid and n is controlled by the valance of said M and Z.

Claim 8

The process of claim 1 wherein said forming solution comprises amorphous silica, aluminum sulfate, sodium sulfate, pyridine, water and tetrapropyl ammonium hydroxide.

Claim 9

The process of claim 1 wherein said forming solution comprises amorphous silica, aluminum sulfate, sodium sulfate, pyridine, water and tetraethyl ammonium bromide.

Claim 10

In a process for the preparation of a mixture of two crystalline aluminum silicates comprising crystallizing an aqueous forming solution of one or more silicon compounds, one or more aluminum compounds and one or more compounds of metals of Group 1A of the Periodic Table, the improvement which comprises the conjunct presence of pyridine and a quaternary ammonium compound in said forming solution.

Claim 11

In a process for the preparation of a mixture of two crystalline aluminum silicates comprising crystallizing an aqueous forming solution of one or more silicon compounds, one or more aluminum compounds and one or more compounds of metals of Group 1A of the Periodic Table, the improvement which comprises the conjunct presence of pyridine and a quaternary ammonium compound in said forming solution.

Claim 12

The process of claim 9 wherein said silicon compound is SiO 2 , said aluminum compound is Al 2 O 3 , said compound of metal of Group 1A is sodium hydroxide, and said quaternary ammonium compound is tetrapropyl ammonium hydroxide in the aqueous solution in the following molar quantities Pyridine:tetrapropyl ammonium hydroxide=6-3,000 SiO 2 :tetrapropyl ammonium hydroxide=200-10,000 SiO 2 :Al 2 O 3 =60-250 SiO 2 :sodium hydroxide=<10; and H 2 O:SiO 2 =5-65.

Claim 13

The process of claim 9 wherein the pka of the conjunct association of said pyridine and said quaternary ammonium compound is less than 5.

Claim 14

The process of claim 9 wherein said quaternary ammonium hydroxide compound is represented by (R 4 )NY, wherein said Y is equal to an anion of a mineral acid or a hydroxyl ion and wherein said R is equal to the same or different alkyl or substituted alkyl moieties having from one to twenty carbon atoms.

Claim 15

The process of claim 12 wherein said quaternary ammonium compound is tetrapropyl ammonium hydroxide.

Claim 16

The process of claim 12 wherein said quaternary ammonium compound is tetraethyl ammonium hydroxide.