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A kind of clay-based composite adsorption material for adsorbing styrene waste gas and its preparation method

A composite adsorption material, styrene technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of low styrene adsorption, cumbersome experimental steps, limited improvement of adsorption performance, etc., and achieve environmental protection preparation costs , The preparation process is simple and the price is low

Active Publication Date: 2020-06-23
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For clay modification, such as the Chinese invention patent (application number: 201710159209.6.) discloses a preparation method of an organic-inorganic modified carbon / montmorillonite composite adsorption material, which increases the layer spacing by supporting the montmorillonite , and then introduce carbon through hydrothermal reaction, thereby improving its adsorption performance on toluene. The material synthesized by this method has limited improvement in adsorption performance, and the experimental steps are relatively cumbersome.
For the adsorption of styrene, such as Ren Ailing et al. (Adsorption of styrene by modified sludge activated carbon [J]. Environmental Chemistry, 2013, 32(5): 833-838.) by using sludge as raw material, using excess impregnation method For sludge modification treatment, the obtained samples have a low adsorption capacity for styrene, and the static adsorption capacity can only reach 211.4mg / g

Method used

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  • A kind of clay-based composite adsorption material for adsorbing styrene waste gas and its preparation method
  • A kind of clay-based composite adsorption material for adsorbing styrene waste gas and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Get 5g of bentonite and add it to 150ml of hydrochloric acid solution with a concentration of 2mol / L, stir, and obtain solution A for 0.5h at room temperature;

[0032] (2) Add 0.005mol fatty alcohol polyoxyethylene ether to solution A, and stir at room temperature for 1 hour to obtain solution B;

[0033] (3) Add 0.15mol ethyl orthosilicate and 0.25g gamma-alumina to solution B, and stir for 20 hours.

[0034] (4) Filter and wash until neutral, dry at 100°C for 12 hours, and grind to 40-80 mesh particles with an agate mortar.

[0035] (5) Dissolve 0.25g of vanadium nitrate in 8.4ml of deionized water, stir for 0.5h, add dropwise on the above-mentioned granules, and stir for 10min. After standing for 4 hours, it was dried at 105°C for 10 hours, and then fired in a muffle furnace at 400°C for 8 hours with a heating rate of 2°C / min.

[0036] The prepared new clay composite material is marked as clay-V, the adsorption retention time of styrene is 84min, and the dynam...

Embodiment 2

[0038] (1) Take 5 g of montmorillonite and 5 g of bentonite and add them to 600 ml of sulfuric acid solution with a concentration of 1 mol / L, stir, and obtain solution A at room temperature for 1 h;

[0039] (2) Add 0.0075mol fatty acid polyoxyethylene ester and 0.0025mol polyoxyethylene amine to solution A, and stir at room temperature for 0.5h to obtain solution B;

[0040] (3) Add 0.15 mol of sodium silicate and 1 g of pseudo-boehmite to solution B, and stir for 15 hours.

[0041] (4) Filter and wash until neutral, dry at 100°C for 12 hours, and grind to 40-80 mesh particles with an agate mortar.

[0042](5) Take 1g of chromium nitrate and dissolve it in 33ml of deionized water, stir for 0.5h, add dropwise on the appealing granules, and stir for 10min. After standing for 4 hours, it was dried at 105°C for 10 hours, and then fired in a muffle furnace at 600°C for 2 hours with a heating rate of 10°C / min.

[0043] The prepared new clay composite material is marked as clay-Cr...

Embodiment 3

[0045] (1) Add 6 g of montmorillonite to 200 ml of hydrochloric acid solution with a concentration of 1.5 mol / L, stir, and obtain solution A for 0.5 h at room temperature;

[0046] (2) Add 0.004mol high-carbon fatty alcohol polyoxyethylene ether to solution A, and stir at room temperature for 1 hour to obtain solution B;

[0047] (3) Add 0.1 mol of sodium silicate, 0.2 g of γ-alumina, and 0.2 g of pseudo-boehmite to solution B, and stir for 18 hours.

[0048] (4) Filter and wash until neutral, dry at 100°C for 12 hours, and grind to 40-80 mesh particles with an agate mortar.

[0049] (5) Dissolve 0.45g of ferric nitrate in 15ml of deionized water, stir for 0.5h, add dropwise on the appealing granules, and stir for 10min. After standing for 4 hours, it was dried at 105°C for 10 hours, and then fired in a muffle furnace at 400°C for 8 hours with a heating rate of 3°C / min.

[0050] The prepared new clay composite material is labeled as clay-Fe, the adsorption retention time of ...

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Abstract

The invention discloses a preparation method of a novel clay-based composite adsorption material used for adsorption of styrene exhaust gas. The preparation method comprises following steps: 1, clay is added into an acidic solution, and stirring is carried out at room temperature so as to obtain a solution A; 2, a surfactant is added into the solution A, and stirring is carried out at room temperature so as to obtain a solution B; 3, a silicon source and an aluminium source are added into the solution B; 4, a product obtained via step 3 is filtered, and washed until pH value of washing solution is increased to 7, and is subjected to drying and smashing into particles; and 5, a transition metal nitrate is dissolved in deionized water so as to obtain a salt solution, the salt solution is added in the particles drop by drop, and stirring, drying, and roasting are carried out. The novel clay-based composite adsorption material is nontoxic, is friendly to the environment, is low in production cost, and possesses excellent adsorption capacity on styrene; no corrosion is caused; the preparation method is simple; and operation and production are convenient.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a novel clay-based composite adsorption material for absorbing styrene waste gas and a preparation method thereof. Background technique [0002] Styrene is an important raw material and basic product for organic chemical production. It is widely used in synthetic plastics, coatings, pigments, rubber, latex, pesticides, textiles, ion exchange resins and other fields. At the same time, it is also a typical volatile organic pollutant (VOCs), which has a huge amount of emissions in the production and synthesis process involving styrene. Styrene is a serious hazard to human health and biology. The hazards to human health can be divided into acute effects and chronic effects. Acute effects refer to short-term poisoning symptoms, long-term exposure can lead to dizziness, fatigue, loss of appetite, thrombocytopenia, and even lymphoma, hematopoietic system tumors...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/12B01J20/30B01D53/02
CPCB01D53/02B01D2253/11B01D2253/112B01D2257/7027B01J20/0296B01J20/12B01J2220/42B01J2220/4806B01J2220/4812
Inventor 刘立成蔡卫权刘昌持
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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