SU1184810A1 - Method of producing sodium alumosilicate - Google Patents

Description

The invention relates to methods for producing synthetic crystalline sodium aluminosilicate of zeolitic structure, which can be used as a component 5 of detergents and cleaning products.

The purpose of the invention is to increase the complexing ability of the target product and simplify the method.

Example 1. In an alkaline-resistant vessel are placed 94.6 g of 45.0% solution D / aOH I and 86.9 g of silica gel composition are introduced, wt%: βίΟ ^ 23.0;

ΛΙ ₂ Ο ₃ 1.9; P 2.36; About 72.74, i.e. the molar ratio of 5U ₂ : 15

: Να ₂ 0: ΑΙ ₂ 0 ₃ = 1: 1.6: 0.05 and 50 grams and ₂ O. The mixture was incubated at 85 ^C with stirring, 1.5 g solution was then filtered to give 30.8 g of precipitate, which on the Vucher's funnel is laundered 20

150 ml of distilled water. This gives 23 g of sediment having the formula Yes ₂ 0 A1 ₂ 0 ₃ 2.1 5ι0 ₂ 23 H ₂ 0. The yield of the final product is 98.5%. The complexing ability is determined 25 as follows. In an aqueous solution of CaCl ₂ containing 0.594 g of CaCl ₂ and adjusted to pH 10 with dilute alkali (NaOH), 1 g of silica-alumina Na is added. Then the suspension is intensively mixed at 20–25 ° C for 15 minutes, the aluminosilicate is filtered and the residual calcium content in the filtrate is determined. The complexing ability is then converted to 1 g of the active substance, calcined to sodium aluminosilicate. at 800 ^s .

PRI mme R 2. In an alkaline-resistant 40 vessel, 166.0 g of a 45% NaOH solution are placed and 27.3 g of silica gel of the composition, in wt.%, Is added: 5ι'Ο ₂ 73.1; A1 ₂ O ₃ 5.88 '; P 7.43; H ₂ 0 13.59 and

55.0 ml of H ₂ 0. The molar ratio of rea-45 gates is 5? O ₂ : On ₂ O: A1 ₂ 0, =

- 1: 2.8: 0.05. The mixture was kept at 95.0 C for 2 h, then the solution was filtered, yielding 32.2 g of precipitate, which was washed with 150 ml of 50 distilled water in a Buchner funnel. Obtained 24.1 g of the above precipitate ¹ _g ly form, the final product '· yield. 99.0%.

Example 130 g of a 45% NaOH solution are placed in an alkaline-resistant vessel and 43.3 g of silica gel of composition are added, wt.%: 5U ₂ 46.2;

A1 ₂ O ₃ 3.87; P4.89; K ₂ O 45.04

ten

and 75 ml of H ₂ O, i.e. the ratio 5Ϊ 0 ₂ : Ma ₂ 0: A1 ₂ O ₃ = 1: 2.2: 0.05. The mixture was kept at 90 ° C with vigorous stirring for 1 h 45 min, then the solution was filtered to obtain 31.5 g of precipitate, which was washed with 150 ml of distilled water in a Buchner funnel. Get 23,0 g of sediment of the above formula, the product yield of 97.5%.

Example4. In an alkaline-resistant vessel, 130 g of a 45% aqueous solution of NaOH are placed and 41.3 silica gel compounds are introduced, wt.%: 5 ° O ₂ 48.5; A1 ₂ 0 ₃ 2.50; P3.40; H ^ O 45.6 and 75 ml K ₂ 0, i.e. the ratio βΐθ ₂ : N а ₂ 0: Α1 ^ 0 ₃ =

= 1: 2.2: 0.03. Further, all operations are similar. Example 1.

Example 5; In an alkaline-resistant vessel, 130 g of a 45% NaOH solution are placed and 28.4 g of silica gel composition, in wt.%, Is added: 5U ₂ 70.5;

A1 _g O ₃ 1.57; P 2.40; H ₂ O 25.53 and 95 ml of H ₂ O, i.e. the ratio of 5U ₂ : Νπ ₂ : A1 ₂ O ₃ = 1: 2.2: 0.01. Further, all operations are similar to example 1.

Example 94.6 g of a 45% aqueous solution of NaOH are placed in an alkaline-resistant vessel and 28.4 g of silica gel are added as in Example 5 and 130 ml of H ₂ O, i.e. the ratio of 5ί0 ₂ : Ma ₂ O: A1 ₂ (> ₃ = = 1: 1.6: 0.01. Further, all operations are analogous to example 1.

Example 7. In an alkaline-resistant vessel, 94.6 g of a 45% NaOH solution are placed and 41.3 g of silica gel is added as in Example 4 and 115 ml of H ₂ 0, i.e. Ratio 510 ₂ : Ma ₂ 0:

: A1 ₂ 0 ₃ = 1: 1.6: 0.03. Further, all operations are similar to example 1.

Example8. 166.0 g of a 45% NaOH solution are placed in an alkaline-resistant vessel and 28.4 g of silica gel are added as in Example 5 and 60 ml of H ₂ 0, i.e. Ratio 310 ₂ : ₂ O:

: A1 ₂ O ₃ = 1: 2.8: 0.01. Next, similarly to example 1.

Example 9. Analogously to Example 8, however, 41.3 g of silica gel was added as in Example 4 and 45 ml of L ^ O, i.e. the ratio of 5U ₂ : Ma ₂ O:

: A1 ₂ O ₃ = 1: 2.8: 0.03.

Example 10. In an alkaline-resistant vessel, 94.6 g of a 45% NaOH solution are placed and 115.8 g of silica gel are added as in Example 1, i.e. the molar ratio of 51 () ₂ ; Ma ₂ 0:

3

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: A1 _I 0 ₃ = 1: 1.2: 0.05 and 30 g H ^ O.

The mixture is maintained at 90 ** C for 60 min, and then filtered and washed as described above.

Example 11. Analogous to Example 5, 10, but the molar ratio of the end result is taken to be equal to 10/2. : Ya ^ O ':' A.1 _a O _{e e} = 1: 3.2: 0.015, and the mixture is kept at 85 ° C for 240 minutes. YU

Example 12. Similar to example 10, but the molar ratio of the initial reagents is taken equal.

510 _g : Per _g 0: A ^ Oz = 1: 0.8: 0.06, and the mixture is kept at 90 ° C for 120 minutes.

Comparative data of methods for producing aluminosilicate prototype and the proposed examples 1-12 are given in the table.

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Claims (1)

1 - waste production of aluminum fluoride, the interaction is carried out when the ratio of the starting components (in terms of oxides) 5'0g: Νη ₂ 0: ΑΙ ^ Ο ^ equal to 1: (1.6-2.8): (0.01 -0.05). 2. The method according to p. 5? 0 ₂ 23.0-73.1 αι ₂ ο ₃ 1.90-5.88 R 2.36-7.43 n ₂ o 13,59-72,74 δ and „, 1184810 2 1 1I848