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Synthesis method of nano Y zeolite, synthesized nano Y zeolite and application

A synthesis method and nanotechnology, applied in the fields of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve serious problems, high cost, environmental pollution, etc., reduce production costs, simplify manufacturing processes, Environmentally green friendly effect

Active Publication Date: 2019-12-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are also some methods (USP3516786, EP0041338A) to realize the preparation of nano-zeolite by adding dispersion medium and organic matter in the system. The disadvantage is that the cost is high and the environmental pollution is more serious.

Method used

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  • Synthesis method of nano Y zeolite, synthesized nano Y zeolite and application
  • Synthesis method of nano Y zeolite, synthesized nano Y zeolite and application
  • Synthesis method of nano Y zeolite, synthesized nano Y zeolite and application

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preparation example Construction

[0032] According to one aspect of the present invention, it relates to a method for synthesizing nano Y zeolite. The method comprises the steps of:

[0033] a) contacting the aluminum source with a sodium hydroxide solution to obtain an aluminum source solution; the contact temperature is 50-95°C;

[0034] b) contacting the silicon source with a sodium hydroxide solution to obtain a silicon source solution; the contact temperature is 70-100°C;

[0035] c) contacting the aluminum source solution with the silicon source solution in an ice-water mixing bath to obtain a mixture;

[0036] d) crystallizing the mixture to obtain the nano Y molecular sieve.

[0037] According to one aspect of the present invention, a) step, with Na 2 O, Al 2 o3 and H 2 In terms of O, in the aluminum source solution, Na 2 O: Al 2 o 3 :H 2 The molar ratio of O is 2-18:1:10-50.

[0038] According to one aspect of the present invention, b) step, with Na 2 O, SiO 2 and H 2 In terms of O, in th...

Embodiment 1

[0054] First, configure the aluminum source solution, weigh 20g of NaOH and dissolve it in 40g of water, add 1.9g of aluminum powder, stir in a 60°C water bath for 10min, and then place it in an ice-water mixing bath. Next, configure the silicon source solution, weigh 16g NaOH and dissolve it in 59g water, add 75g silica sol, heat at 100°C for 10min to fully dissolve, and place the solution in an ice-water mixed bath environment after it becomes transparent. Slowly drop the aluminum source solution into the silicon source solution and stir for 24 hours to obtain a mixture. Then the mixture was warmed up to 50°C and allowed to stand still for crystallization for 50 hours. The product was washed with water until the pH value of the washing solution was less than 10, filtered, and dried at 80°C for 12 hours to obtain nano Y zeolite, whose morphology was determined by figure 1 Note that the average grain size is 10 nm. The catalyst was named Cat-1, and the molar ratio of silica ...

Embodiment 2

[0057] First, configure the aluminum source solution, weigh 18g of NaOH and dissolve it in 38g of water, add 3.6g of alumina powder, stir in a water bath at 80°C for half an hour, and then place it in an ice-water mixing bath. Next, configure the silicon source solution, weigh 16g NaOH and dissolve it in 59g water, add 75g silica sol, heat at 100°C for 10min to fully dissolve, and place the solution in an ice-water mixed bath environment after it becomes transparent. Slowly drop the aluminum source solution into the silicon source solution and stir for 24 hours to obtain a mixture. Then the mixture was warmed up to 60°C and allowed to stand for crystallization for 45 hours. The product was washed with water until the pH value of the washing solution was less than 10, filtered, and dried at 80°C for 12 hours to obtain nano Y zeolite, whose morphology was determined by figure 2 Note that the average grain diameter is 30 nm. The catalyst was named Cat-2, and the molar ratio of...

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Abstract

The invention relates to a synthesis method of nano Y zeolite, the synthesized nano Y zeolite and an application. The method comprises steps as follows: a) an aluminum source and a sodium hydroxide solution make contact at the temperature of 50-95 DEG C to obtain an aluminum source solution; b) a silicon source and the sodium hydroxide solution make contact at the temperature of 70-100 DEG C to obtain a silicon source solution; c) the aluminum source solution and the silicon source solution make contact under the condition of an ice water mixed bath, and a mixture is obtained; and d) the mixture is crystalized to obtain a nano Y molecular sieve. The method can be used for industrial production of the nano Y zeolite.

Description

technical field [0001] The invention relates to a synthesis method of nano Y zeolite, the synthesized nano Y zeolite and its application. Background technique [0002] Long-chain alkylbenzene is the main raw material for the preparation of synthetic detergent sodium alkylbenzene sulfonate. In current industrial production, hydrofluoric acid is generally used as a catalyst for production. Although the hydrofluoric acid method has the advantages of mild reaction conditions, simple reactor, and low styrene-to-ene ratio, it is difficult to adapt to the increasing environmental protection requirements due to the strong corrosion and toxicity of hydrofluoric acid, and there are equipments that are easy to corrode and poor working conditions. And so on a series of questions. The development of a non-corrosive and pollution-free solid acid alkylation process to replace the hydrofluoric acid process has become an inevitable development trend of long-chain alkylbenzene production te...

Claims

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Application Information

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IPC IPC(8): C01B39/24B82Y30/00B01J29/08C07C2/12C07C15/107
CPCB01J29/08B82Y30/00C01B39/24C01P2002/72C01P2004/03C01P2004/64C07C2/12C07C15/107C07C2529/08
Inventor 胥明高焕新
Owner CHINA PETROLEUM & CHEM CORP
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