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A magnetic molecular sieve/straw charcoal composite material and its preparation method and application

A technology of magnetic molecules and composite materials, applied in chemical instruments and methods, carbon preparation/purification, other chemical processes, etc., can solve the problem of limited adsorption performance of molecular sieves, and achieve improved chemical reaction speed, high specific surface area, and adsorption performance. strong effect

Active Publication Date: 2021-08-13
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of limited adsorption performance of molecular sieves, the present invention provides a magnetic molecular sieve / straw charcoal composite material and its preparation method and application

Method used

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  • A magnetic molecular sieve/straw charcoal composite material and its preparation method and application
  • A magnetic molecular sieve/straw charcoal composite material and its preparation method and application
  • A magnetic molecular sieve/straw charcoal composite material and its preparation method and application

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Effect test

Embodiment 1

[0045] The preparation of the magnetic molecular sieve / straw carbon composite material in this embodiment includes the following steps:

[0046] Step 1, FeCl 2 4H 2 O and FeCl 3 ·6H 2 O added to distilled water, FeCl 2 4H 2 O, FeCl 3 ·6H 2 The amount of O and distilled water added is 25g FeCl per liter of distilled water 2 4H 2 O, add 62.5g FeCl 3 ·6H 2 O; react in 100W ultrasonic wave under the condition of nitrogen protection, and at the same time raise the temperature to 75°C, add NH after constant temperature 3 ·H 2 O (add 125mL NH per liter of distilled water 3 ·H 2 (2) to obtain a solid-liquid mixture after continuing to react for 20min, after the natural cooling of the solid-liquid mixture, utilize a magnet to adsorb the magnetic substance in the solid-liquid mixture, and then repeatedly wash the magnetic substance obtained by adsorption, at a temperature of 65 After drying at ℃ for 5h, the magnetic Fe 3 o 4 ;

[0047] Step 2, with sodium silicate as si...

Embodiment 2

[0054] The preparation of magnetic molecular sieve / straw charcoal in this embodiment includes the following steps:

[0055] Step 1, FeCl 2 4H 2 O and FeCl 3 ·6H 2 O added to distilled water, FeCl 2 4H 2 O, FeCl 3 ·6H 2 The amount of O and distilled water added is 18.75g FeCl per liter of distilled water 2 4H 2 O, add 56.25g FeCl 3 ·6H 2 O, under the condition of nitrogen protection, the reaction was carried out in ultrasonic wave, and the temperature was raised to 75 °C at the same time, and NH was added after constant temperature 3 ·H 2 O (add 125mL NH per liter of distilled water 3 ·H 2 (0), continue to react for 20min to obtain a solid-liquid mixture, after the natural cooling of the solid-liquid mixture, utilize a magnet to adsorb the magnetic substance in the solid-liquid mixture, then repeatedly wash the magnetic substance obtained by adsorption, at a temperature of 65 After drying at ℃ for 5h, the magnetic Fe 3 o 4 ;

[0056] Step 2, with sodium silicat...

Embodiment 3

[0062] The preparation of magnetic molecular sieve / straw charcoal in this embodiment includes the following steps:

[0063] Step 1, FeCl 2 4H 2 O and FeCl 3 ·6H 2 O added to distilled water, FeCl 2 4H 2 O, FeCl 3 ·6H 2 The amount of O and distilled water added is 31.25g FeCl per liter of distilled water 2 4H 2 O, add 68.75g FeCl 3 ·6H 2 O; under the condition of nitrogen protection, the reaction was carried out in ultrasonic wave, and the temperature was raised to 85 °C at the same time, and NH was added after constant temperature 3 ·H 2 O (add 125 mL NH per liter of distilled water 3 ·H 2 (2) to obtain a solid-liquid mixture after continuing to react for 20min, after the natural cooling of the solid-liquid mixture, utilize a magnet to adsorb the magnetic substance in the solid-liquid mixture, and then repeatedly wash the magnetic substance obtained by adsorption, at a temperature of 75 After drying at ℃ for 5h, the magnetic Fe 3 o 4 ;

[0064] Step 2, with so...

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Abstract

The invention discloses a magnetic molecular sieve / straw carbon composite material and its preparation method and application. 2 4H 2 O and FeCl 3 ·6H 2 O was added to water and ultrasonically stirred to obtain magnetic Fe 3 o 4 ; Use sodium aluminate as aluminum source, sodium silicate as silicon source, and water as solvent to obtain 4A molecular sieve; use corn stalks as raw materials to obtain sample straw charcoal; add calcium chloride, citric acid, straw charcoal and magnetic Fe to the sol 3 o 4 , the magnetic molecular sieve / straw carbon composite material was prepared by a series of processes such as calcination and crystallization. The magnetic molecular sieve / straw carbon composite material has the advantages of high specific surface area, strong adsorption performance, and easy separation from the reaction solution by an external magnetic field, which can increase the chemical reaction speed, save energy and protect the environment, and the prepared magnetic molecular sieve / straw carbon composite material has uniform particle size , shape rules.

Description

technical field [0001] The invention belongs to the technical field of molecular sieve / straw charcoal composite material preparation, and in particular relates to a magnetic molecular sieve / straw charcoal composite material and its preparation method and application. Background technique [0002] 5A molecular sieves have high adsorption selectivity and high adsorption capacity, they are widely used in the separation of n-paraffins and isoparaffins, water removal and refining of air, oil, natural gas and other industrial gases, oxygen and nitrogen separation, pressure swing adsorption Hydrogen, hydrogen purification. With the deepening of people's understanding of environmental protection, the purification of industrial waste gas is gradually paid attention to. 5A zeolite molecular sieves can be used to make adsorbents because of their adsorption properties, which can effectively remove low-concentration industrial waste gases (such as SO 2 , methanol, CO 2 , CO, H 2 S, SO...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/02C01B32/05B01J20/20B01J20/28B01J20/30
CPCB01J20/20B01J20/28009C01B39/02C01G49/08C01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2004/80C01B32/05
Inventor 杨建利杨小刚庞雅杰高战辉李刚于春侠张润兰刘静王博贺振振邱新路
Owner XIAN UNIV OF SCI & TECH
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