Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of functional molecular sieves for adsorbing Pb (II) heavy metal ions

A technology of heavy metal ions and molecular sieves, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problem that the functionalized MCM-41 mesoporous material has few types and the adsorption and removal of heavy metal lead ions is limited. , the preparation of equipment and materials are expensive, etc., to achieve the effect of convenient industrial production and promotion, regular and orderly microstructure, and easy preparation

Pending Publication Date: 2021-05-25
黄石砾晶新材料科技有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of preparation method of the functionalized molecular sieve that adsorbs Pb(II) heavy metal ion, solves the functionalized MCM-41 mesoporous material kind that prepares at present is less, the adsorption and removal of heavy metal lead ion is limited, preparation The problems of expensive equipment and materials, high cost, and cumbersome preparation procedures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021]The present invention provides a technical solution: a method of adsorbing a functional molecular sieve of PB (II) heavy metal ions, including the following steps:

[0022]Step 1: Preparation of mesoporous molecular sieve MCM-41: dissolved from 1.0 g of hexadalkyltrimethyla bromine in 100 ml of deionized water, followed by adding 80 mL of concentrated ammonia water, and stirred vigorously at 65 ° C Hour, then the 5 mL of orthosable ethyl ester was then slowly added, and stirring was continued for three hours at a temperature of 65 ° C. After the mixture reacted, the product was transferred to the beaker, and the crystals were allowed to crystallize for four days, followed by filtration and Wash the powder sample and dried in a temperature of 90 ° C, then transfer the powder sample into the high temperature furnace temperature control temperature, the high temperature furnace controls to 700 ° C, and the surfactant is removed for five hours to obtain primary The mesoporous molecul...

Embodiment 1

[0027]Step 1: Preparation of MCM-41 of the mesoporous molecular sieve:

[0028]A 1.0 g of hexadalkyltrimethylammonium bromide was dissolved in 100 ml of deionized water, and 80 ml of concentrated concentrated ammonia was added vigorously stirred at 65 ° C for an hour, then slowly to add 5 ml of orthosilicate to the above mixed solution. After stirring at the above temperature, the product was transferred to a beaker at room temperature, and the powder sample was obtained by filtration and water, dried at 90 ° C, then shifted the sample into the program temperature control temperature. The furnace is heated to 700 ° C, and the surfactant is removed for 5 hours, and the primary mesoporous molecular sieve MCM-41 is obtained, and it is submitted as M-1;

[0029]Step 2: 3-mercaptopropyltrimethoxysilane and 3-aminopropyltrimethoxysilane prehydly:

[0030]Take 0.1 mol of 3-mercaptopropyltrimethoxysilane and 0.1 mol of water mixed with a molar ratio of 1: 1, then adding a pH of acetic acid to a pH o...

Embodiment 2

[0035]Step 1: Preparation of MCM-41 of the mesoporous molecular sieve:

[0036]A 1.6 g of hexadalkyltrimethylammonium bromide was dissolved in 100 ml of deionized water, and 120 ml of concentrated concentrated ammonia was added vigorously for 1.5 hours at 70 ° C, then, 8 ml of orthosilicate was added to the above mixed solution. After stirring at the above temperature, the product was transferred to the beaker at room temperature, and the powder sample was obtained by filtration and water, drying the sample at 100 ° C, then shifting the sample into the program temperature control. The high temperature furnace is heated to 750 ° C, and the surfactant is removed by 4.5 h, obtaining the primary mesoporous molecular sieve MCM-41, which will be submitted to M-1;

[0037]Step 2: 3-mercaptoethyltriethoxysilane and 3-aminopropyltriethoxysilane prehydly:

[0038]The 0.15 mol of 3-mercaptopropyltrimethoxysilane and 0.15 mol of water were mixed with a molar ratio of 1: 1, and then the pH of acetic acid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of functional molecular sieves for adsorbing Pb (II) heavy metal ions, which comprises the following steps: firstly, preparing a mesoporous molecular sieve MCM-41 through a series of physical and chemical processes; then preparing secondary functionalized mesoporous materials M-2 and M-3 through prehydrolysis of 3-mercaptopropyltrimethoxysilane and 3-aminopropyltrimethoxysilane and further secondary functionalization reaction treatment on the mesoporous molecular sieve; purifying the functionalized mesoporous materials by methods of crystallization, drying, reflux and the like; then utilizing the mesoporous materials for adsorbing and removing heavy metal lead ions for water treatment. The secondary functionalized mesoporous materials with an ordered structure can be prepared by using simple equipment and a simple operation mode through the method, the mesoporous materials have a specific regular mesoporous structure and a rich and highly-ordered pore structure, and after secondary functionalization treatment, the regular pore channel structure is basically not damaged, and good structural stability is achieved.

Description

Technical field[0001]The present invention relates to the field of functionalized materials, and is specifically a method of preparing a functional molecular sieve of PB (II) heavy metal ions.Background technique[0002]Many poisonous heavy metal ions are discharged into the environment, causing a variety of water pollution, and threatens people's health. Therefore, the problem of heavy metal wastewater is due to the poisonousity, can not degrade, and has a concern for people with serious environmental pollution (Liang Yinqin; Zhang Shuping; Li Hui, etc., chemical progress 2018, 37 (8), 3179-3187. Qian Yong, Guangzhou Chemical 2011,39 (5), 130-131.d Clifford, S Subramonian, et al.Environmental ScienceAndtechnology, 1986, 20, 1072-1080), research workers also want to go to the heavy metal ions in water pollution For example, traditional chemical settlement, ion exchange and adsorption, etc., is used one by one, which is used to remove heavy metal ions, but it is often not high in effec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/22B01J20/186B01J20/28054B01J20/28083C02F1/285C02F1/281C02F1/288C02F2101/20
Inventor 廖庆玲马福民徐细勇
Owner 黄石砾晶新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com