阅读说明：本技术 一种抗菌分子筛及其制备方法 (Antibacterial molecular sieve and preparation method thereof ) 是由 张君 钱本强 于 2020-12-31 设计创作，主要内容包括：本发明提供一种抗菌分子筛及其制备方法,涉及抗菌分子筛技术领域。该一种抗菌分子筛,包括分子筛载体和抗菌添加物,所述抗菌分子筛载体包括以下重量份原料：粉体抗菌陶瓷40-60份、无机硅粉5-8份、云母粉5-8份、有机硅季铵盐抗菌剂1-1.5份、去离子水50-65份；所述抗菌添加物包括以下重量份原料：氯化钠溶液20-35份、锌离子盐溶液9-15份、纳米银粉1-2.5份、银离子盐溶液5-12份、碱式铝盐溶液12-16份。通过合理的选用分子筛生产原料,采用抗菌离子以及粉体抗菌陶瓷材料,能够大大提高分子筛的抗菌性能,提高分子筛的质量,通过在分子筛表面添加有抗菌添加物,能够使分子筛表面具有更好的抗菌性能。(The invention provides an antibacterial molecular sieve and a preparation method thereof, and relates to the technical field of antibacterial molecular sieves. The antibacterial molecular sieve comprises a molecular sieve carrier and an antibacterial additive, wherein the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 40-60 parts of powder antibacterial ceramic, 5-8 parts of inorganic silicon powder, 5-8 parts of mica powder, 1-1.5 parts of organosilicon quaternary ammonium salt antibacterial agent and 50-65 parts of deionized water; the antibacterial additive comprises the following raw materials in parts by weight: 20-35 parts of sodium chloride solution, 9-15 parts of zinc ion salt solution, 1-2.5 parts of nano silver powder, 5-12 parts of silver ion salt solution and 12-16 parts of basic aluminum salt solution. The antibacterial material has the advantages that the antibacterial performance of the molecular sieve can be greatly improved by reasonably selecting the raw materials for producing the molecular sieve and adopting the antibacterial ions and the powdery antibacterial ceramic material, the quality of the molecular sieve is improved, and the antibacterial additive is added to the surface of the molecular sieve, so that the surface of the molecular sieve has better antibacterial performance.)

1. An antibacterial molecular sieve comprises a molecular sieve carrier and an antibacterial additive, and is characterized in that: the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 40-60 parts of powder antibacterial ceramic, 5-8 parts of inorganic silicon powder, 5-8 parts of mica powder, 1-1.5 parts of organosilicon quaternary ammonium salt antibacterial agent and 50-65 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 20-35 parts of sodium chloride solution, 9-15 parts of zinc ion salt solution, 1-2.5 parts of nano silver powder, 5-12 parts of silver ion salt solution and 12-16 parts of basic aluminum salt solution.

2. An antibacterial molecular sieve according to claim 1, characterized in that: the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 40 parts of powder antibacterial ceramic, 5 parts of inorganic silicon powder, 5 parts of mica powder, 1 part of organosilicon quaternary ammonium salt antibacterial agent and 40 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 20 parts of sodium chloride solution, 9 parts of zinc ion salt solution, 1 part of nano silver powder, 5 parts of silver ion salt solution and 12 parts of basic aluminum salt solution.

3. An antibacterial molecular sieve according to claim 1, characterized in that: the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 50 parts of powder antibacterial ceramic, 6.5 parts of inorganic silicon powder, 6.5 parts of mica powder, 1.25 parts of organosilicon quaternary ammonium salt antibacterial agent and 52.5 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 27.5 parts of sodium chloride solution, 12 parts of zinc ion salt solution, 1.75 parts of nano silver powder, 8.5 parts of silver ion salt solution and 14 parts of basic aluminum salt solution.

4. An antibacterial molecular sieve according to any one of claims 1 to 3, characterized in that: the weight ratio of the molecular sieve carrier to the antibacterial additive is 1: 1.1-1.3, wherein the mass of the inorganic silicon powder and the mica powder nano silver powder is not more than 38 percent of the total weight.

5. A preparation method of an antibacterial molecular sieve is characterized by comprising the following steps: the preparation method comprises the following preparation processes:

step 1, putting antibacterial ceramic powder, inorganic silicon powder, mica powder, an organosilicon quaternary ammonium salt antibacterial agent and deionized water as raw materials of an antibacterial molecular sieve carrier into a closed reaction kettle, and fully mixing and stirring to form a viscous state;

step 2, filling high-pressure carbon dioxide gas into the reaction closed type reaction kettle, and then stirring again in a low-temperature environment;

step 3, opening a valve of the closed reaction kettle, slowly discharging air, and when the air pressure in the closed reaction kettle is equal to the external air pressure, filling hot air into the closed reaction kettle to enable the viscous raw materials to form a solid;

step 4, taking out the solid mixed raw material, putting the solid mixed raw material into a vibrating sieve, sieving out the molecular sieve meeting the conditions, and baking at high temperature to harden the molecular sieve structure, wherein residual carbon dioxide gas inside the molecular sieve overflows to form a molecular sieve pore;

step 5, putting the sodium chloride solution, the zinc ion salt solution, the nano silver powder, the silver ion salt solution and the basic aluminum salt solution into an open type reaction kettle, and fully and uniformly stirring;

and 6, putting the molecular sieve obtained in the step 4 into an open type reaction kettle, soaking for 1-1.5h, fishing out and drying to obtain the antibacterial molecular sieve.

6. The method of claim 5, wherein the method comprises the steps of: the pressure of the high-pressure carbon dioxide gas in the step 2 is 2-3atm, and the low-temperature environment is an environment with the temperature of 12-16 ℃.

7. The method of claim 5, wherein the method comprises the steps of: the temperature of the hot air in the step 3 is 35-44 ℃, and the high-temperature baking temperature in the step 4 is 800-1200 ℃.

8. The method of claim 5, wherein the method comprises the steps of: the vibrating screen in the step 4 is a three-layer vibrating screen, and the product in the middle layer is taken as a qualified molecular sieve.

Technical Field

The invention relates to the technical field of antibacterial molecular sieves, in particular to an antibacterial molecular sieve and a preparation method thereof.

Background

The molecular sieve is an artificially synthesized hydrated aluminosilicate (zeolite) or natural zeolite with molecular sieving effect, and has a chemical general formula of (M' 2M) O.Al₂O₃·xSiO₂·yH₂O, M' and M are respectively monovalent and divalent cations such as K +, Na +, Ca2+, Ba2+ and the like. It has many pore canals with uniform pore diameter and regularly arranged holes, and molecular sieves with different pore diameters separate molecules with different sizes and shapes. According to SiO₂And Al₂O₃The molecular ratio of (A) is different, and molecular sieves with different pore diameters are obtained. The types of the medicine are as follows: 3A (potassium A type), 4A (sodium A type), 5A (calcium A type), 10Z (calcium Z type), 13Z (sodium Z type), Y (sodium Y type), sodium mordenite type, etc. It has high adsorption capacity, high selectivity and high temperature resistance. It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration.

The traditional molecular sieve has the disadvantages of complex manufacturing process and high production cost, and the manufactured molecular sieve has an unobvious antibacterial effect.

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an antibacterial molecular sieve and a preparation method thereof, and solves the problems that the traditional molecular sieve is relatively complex in preparation process, relatively high in production cost and unobvious in antibacterial effect of the prepared molecular sieve.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: an antibacterial molecular sieve comprises a molecular sieve carrier and an antibacterial additive, wherein the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 40-60 parts of powder antibacterial ceramic, 5-8 parts of inorganic silicon powder, 5-8 parts of mica powder, 1-1.5 parts of organosilicon quaternary ammonium salt antibacterial agent and 50-65 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 20-35 parts of sodium chloride solution, 9-15 parts of zinc ion salt solution, 1-2.5 parts of nano silver powder, 5-12 parts of silver ion salt solution and 12-16 parts of basic aluminum salt solution.

Preferably, the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 40 parts of powder antibacterial ceramic, 5 parts of inorganic silicon powder, 5 parts of mica powder, 1 part of organosilicon quaternary ammonium salt antibacterial agent and 40 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 20 parts of sodium chloride solution, 9 parts of zinc ion salt solution, 1 part of nano silver powder, 5 parts of silver ion salt solution and 12 parts of basic aluminum salt solution.

Preferably, the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 50 parts of powder antibacterial ceramic, 6.5 parts of inorganic silicon powder, 6.5 parts of mica powder, 1.25 parts of organosilicon quaternary ammonium salt antibacterial agent and 52.5 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 27.5 parts of sodium chloride solution, 12 parts of zinc ion salt solution, 1.75 parts of nano silver powder, 8.5 parts of silver ion salt solution and 14 parts of basic aluminum salt solution.

Preferably, the weight ratio of the molecular sieve carrier to the antibacterial additive is 1: 1.1-1.3, wherein the mass of the inorganic silicon powder and the mica powder nano silver powder is not more than 38 percent of the total weight.

A preparation method of an antibacterial molecular sieve comprises the following preparation processes:

step 1, putting antibacterial ceramic powder, inorganic silicon powder, mica powder, an organosilicon quaternary ammonium salt antibacterial agent and deionized water as raw materials of an antibacterial molecular sieve carrier into a closed reaction kettle, and fully mixing and stirring to form a viscous state;

step 2, filling high-pressure carbon dioxide gas into the reaction closed type reaction kettle, and then stirring again in a low-temperature environment;

step 3, opening a valve of the closed reaction kettle, slowly discharging air, and when the air pressure in the closed reaction kettle is equal to the external air pressure, filling hot air into the closed reaction kettle to enable the viscous raw materials to form a solid;

step 4, taking out the solid mixed raw material, putting the solid mixed raw material into a vibrating sieve, sieving out the molecular sieve meeting the conditions, and baking at high temperature to harden the molecular sieve structure, wherein residual carbon dioxide gas inside the molecular sieve overflows to form a molecular sieve pore;

step 5, putting the sodium chloride solution, the zinc ion salt solution, the nano silver powder, the silver ion salt solution and the basic aluminum salt solution into an open type reaction kettle, and fully and uniformly stirring;

and 6, putting the molecular sieve obtained in the step 4 into an open type reaction kettle to be soaked for 1-1.5h, fishing out and drying to obtain the antibacterial molecular sieve

Preferably, the pressure of the high-pressure carbon dioxide gas in the step 2 is 2 to 3atm, and the low-temperature environment is an environment having a temperature of 12 to 16 ℃.

Preferably, the temperature of the hot air in the step 3 is 35-44 ℃, and the temperature of the high-temperature baking in the step 4 is 800-1200 ℃.

Preferably, the vibrating sieve in the step 4 is a three-layer vibrating sieve, and a product in the middle layer is taken as a qualified molecular sieve.

(III) advantageous effects

The invention provides an antibacterial molecular sieve and a preparation method thereof. The method has the following beneficial effects:

1. according to the invention, by reasonably selecting the raw materials for producing the molecular sieve and adopting the antibacterial ions and the powdery antibacterial ceramic material, the antibacterial performance of the molecular sieve can be greatly improved, the quality of the molecular sieve is improved, and the antibacterial additive is added on the surface of the molecular sieve, so that the surface of the molecular sieve has better antibacterial performance.

2. According to the invention, by adopting a reasonable molecular sieve preparation process, the molecular sieve carrier is prepared by mixing and stirring raw materials, then the carbon dioxide overflows by heating to generate pores, the cost for producing the molecular sieve is greatly reduced, and the antibacterial performance of the surface of the molecular sieve can be improved by soaking the molecular sieve carrier in the antibacterial additive solution.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

the embodiment of the invention provides an antibacterial molecular sieve and a preparation method thereof, wherein the antibacterial molecular sieve comprises a molecular sieve carrier and an antibacterial additive, and the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 60 parts of powdery antibacterial ceramic, 8 parts of inorganic silicon powder, 8 parts of mica powder, 1.5 parts of organosilicon quaternary ammonium salt antibacterial agent and 65 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 35 parts of sodium chloride solution, 15 parts of zinc ion salt solution, 2.5 parts of nano silver powder, 12 parts of silver ion salt solution and 16 parts of basic aluminum salt solution.

The weight ratio of the molecular sieve carrier to the antibacterial additive is 1: 1.2, the mass of the inorganic silicon powder and the mica powder nano silver powder accounts for 30 percent of the total weight.

A preparation method of an antibacterial molecular sieve comprises the following preparation processes:

step 1, putting antibacterial ceramic powder, inorganic silicon powder, mica powder, an organosilicon quaternary ammonium salt antibacterial agent and deionized water as raw materials of an antibacterial molecular sieve carrier into a closed reaction kettle, and fully mixing and stirring to form a viscous state;

step 2, filling high-pressure carbon dioxide gas into the reaction closed type reaction kettle, and then stirring again in a low-temperature environment;

step 3, opening a valve of the closed reaction kettle, slowly discharging air, and when the air pressure in the closed reaction kettle is equal to the external air pressure, filling hot air into the closed reaction kettle to enable the viscous raw materials to form a solid;

step 4, taking out the solid mixed raw material, putting the solid mixed raw material into a vibrating sieve, sieving out the molecular sieve meeting the conditions, and baking at high temperature to harden the molecular sieve structure, wherein residual carbon dioxide gas inside the molecular sieve overflows to form a molecular sieve pore;

step 5, putting the sodium chloride solution, the zinc ion salt solution, the nano silver powder, the silver ion salt solution and the basic aluminum salt solution into an open type reaction kettle, and fully and uniformly stirring;

and 6, putting the molecular sieve obtained in the step 4 into an open type reaction kettle to be soaked for 1.3h, fishing out and drying to obtain the antibacterial molecular sieve

Wherein, the pressure of the high-pressure carbon dioxide gas in the step 2 is 2.5atm, and the low-temperature environment is an environment with the temperature of 12-16 ℃.

Wherein the hot air temperature in the step 3 is 40 ℃, and the high-temperature baking temperature in the step 4 is 950 ℃.

Wherein, the vibrating screen in the step 4 is a three-layer vibrating screen, and the product of the middle layer is taken as a qualified molecular sieve.

Example two: an antibacterial molecular sieve and a preparation method thereof, comprising a molecular sieve carrier and an antibacterial additive, wherein the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 40 parts of powder antibacterial ceramic, 5 parts of inorganic silicon powder, 5 parts of mica powder, 1 part of organosilicon quaternary ammonium salt antibacterial agent and 40 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 20 parts of sodium chloride solution, 9 parts of zinc ion salt solution, 1 part of nano silver powder, 5 parts of silver ion salt solution and 12 parts of basic aluminum salt solution.

The weight ratio of the molecular sieve carrier to the antibacterial additive is 1: 1.2, the mass of the inorganic silicon powder and the mica powder nano silver powder accounts for 30 percent of the total weight.

A preparation method of an antibacterial molecular sieve comprises the following preparation processes:

step 1, putting antibacterial ceramic powder, inorganic silicon powder, mica powder, an organosilicon quaternary ammonium salt antibacterial agent and deionized water as raw materials of an antibacterial molecular sieve carrier into a closed reaction kettle, and fully mixing and stirring to form a viscous state;

step 2, filling high-pressure carbon dioxide gas into the reaction closed type reaction kettle, and then stirring again in a low-temperature environment;

step 3, opening a valve of the closed reaction kettle, slowly discharging air, and when the air pressure in the closed reaction kettle is equal to the external air pressure, filling hot air into the closed reaction kettle to enable the viscous raw materials to form a solid;

step 4, taking out the solid mixed raw material, putting the solid mixed raw material into a vibrating sieve, sieving out the molecular sieve meeting the conditions, and baking at high temperature to harden the molecular sieve structure, wherein residual carbon dioxide gas inside the molecular sieve overflows to form a molecular sieve pore;

step 5, putting the sodium chloride solution, the zinc ion salt solution, the nano silver powder, the silver ion salt solution and the basic aluminum salt solution into an open type reaction kettle, and fully and uniformly stirring;

and 6, putting the molecular sieve obtained in the step 4 into an open type reaction kettle to be soaked for 1.3h, fishing out and drying to obtain the antibacterial molecular sieve

Wherein, the pressure of the high-pressure carbon dioxide gas in the step 2 is 2.5atm, and the low-temperature environment is an environment with the temperature of 12-16 ℃.

Wherein the hot air temperature in the step 3 is 40 ℃, and the high-temperature baking temperature in the step 4 is 950 ℃.

Wherein, the vibrating screen in the step 4 is a three-layer vibrating screen, and the product of the middle layer is taken as a qualified molecular sieve.

Example three: an antibacterial molecular sieve and a preparation method thereof, comprising a molecular sieve carrier and an antibacterial additive, wherein the antibacterial molecular sieve carrier comprises the following raw materials in parts by weight: 50 parts of powder antibacterial ceramic, 6.5 parts of inorganic silicon powder, 6.5 parts of mica powder, 1.25 parts of organosilicon quaternary ammonium salt antibacterial agent and 52.5 parts of deionized water;

the antibacterial additive comprises the following raw materials in parts by weight: 27.5 parts of sodium chloride solution, 12 parts of zinc ion salt solution, 1.75 parts of nano silver powder, 8.5 parts of silver ion salt solution and 14 parts of basic aluminum salt solution.

The weight ratio of the molecular sieve carrier to the antibacterial additive is 1: 1.2, the mass of the inorganic silicon powder and the mica powder nano silver powder accounts for 30 percent of the total weight.

A preparation method of an antibacterial molecular sieve comprises the following preparation processes:

step 1, putting antibacterial ceramic powder, inorganic silicon powder, mica powder, an organosilicon quaternary ammonium salt antibacterial agent and deionized water as raw materials of an antibacterial molecular sieve carrier into a closed reaction kettle, and fully mixing and stirring to form a viscous state;

step 2, filling high-pressure carbon dioxide gas into the reaction closed type reaction kettle, and then stirring again in a low-temperature environment;

step 3, opening a valve of the closed reaction kettle, slowly discharging air, and when the air pressure in the closed reaction kettle is equal to the external air pressure, filling hot air into the closed reaction kettle to enable the viscous raw materials to form a solid;

step 4, taking out the solid mixed raw material, putting the solid mixed raw material into a vibrating sieve, sieving out the molecular sieve meeting the conditions, and baking at high temperature to harden the molecular sieve structure, wherein residual carbon dioxide gas inside the molecular sieve overflows to form a molecular sieve pore;

step 5, putting the sodium chloride solution, the zinc ion salt solution, the nano silver powder, the silver ion salt solution and the basic aluminum salt solution into an open type reaction kettle, and fully and uniformly stirring;

and 6, putting the molecular sieve obtained in the step 4 into an open type reaction kettle to be soaked for 1.3h, fishing out and drying to obtain the antibacterial molecular sieve

Wherein, the pressure of the high-pressure carbon dioxide gas in the step 2 is 2.5atm, and the low-temperature environment is an environment with the temperature of 12-16 ℃.

Wherein the hot air temperature in the step 3 is 40 ℃, and the high-temperature baking temperature in the step 4 is 950 ℃.

Wherein, the vibrating screen in the step 4 is a three-layer vibrating screen, and the product of the middle layer is taken as a qualified molecular sieve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.