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Adsorbent material for adsorbing VOCs and preparation method thereof

An adsorption material and adsorbent technology, which is applied in the field of adsorption material for adsorbing VOCs and its preparation, can solve the problems of easy blocking of molecular sieve adsorption channels, decreased adsorption performance, and easy carbon deposition on the surface of molecular sieve.

Active Publication Date: 2018-11-13
JINHUA VOCATIONAL TECH COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] During the cyclic adsorption-desorption of the above molecular sieves, the surface of the molecular sieve is easy to deposit carbon, which is easy to block the adsorption pores of the molecular sieve, which reduces its adsorption performance.

Method used

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  • Adsorbent material for adsorbing VOCs and preparation method thereof
  • Adsorbent material for adsorbing VOCs and preparation method thereof
  • Adsorbent material for adsorbing VOCs and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Pt(NO 3 ) 2 The solution was added to 50g of BN carrier, soaked for 2 hours, then fried in a water bath at 90°C, dried in an oven at 120°C for 8 hours, and finally calcined at 500°C for 4 hours to obtain a Pt / BN catalyst;

[0021] (2) with Ce(NO 3 ) 3 ·6H 2 O and Zr(NO 3 ) 4 ·5H 2 The molar ratio of O is 7:3, and 30.39g Ce(NO 3 ) 3 ·6H 2 O and 12.88g Zr(NO 3 ) 4 ·5H 2 O, add 100mL deionized water to dissolve, stir evenly, soak for 2 hours, then fry in a water bath at 90°C, dry in an oven at 120°C for 8 hours, and finally roast at 500°C for 4 hours to obtain CeO 2 -ZrO 2 catalyst;

[0022] (3) Mix molecular sieve, Pt / BN and CeO with ZSM-5 (silicon-aluminum ratio is 300) / USY 2 -ZrO 2 The mass ratio of catalyst is 100:0.5:1, the mass ratio of ZSM-5 (silicon-aluminum ratio is 300) and USY molecular sieve is 1:1, respectively weigh 50g ZSM-5 (silicon-aluminum ratio is 300) molecular sieve, 50g USY Molecular sieves, 0.5g Pt / BN catalyst and 1g CeO 2 -ZrO ...

Embodiment 2

[0025](1) the preparation method of Pt / BN catalyst is identical with embodiment 1;

[0026] (2)CeO 2 -ZrO 2 The preparation method of catalyst is identical with embodiment 1;

[0027] (3) Mix molecular sieve, Pt / BN and CeO with ZSM-5 (silicon-aluminum ratio is 300) / USY 2 -ZrO 2 The mass ratio of the catalyst is 100:0.5:1, and the mass ratio of ZSM-5 (the ratio of silicon to aluminum is 300) to USY molecular sieve is 2:1. Weigh 66.67g of ZSM-5 (the ratio of silicon to aluminum is 300) molecular sieve, 33.33 g USY molecular sieve, 0.5g Pt / BN catalyst and 1g CeO 2 -ZrO 2 For the catalyst, add 100ml of deionized water and stir evenly, then fry it in a water bath at 90°C, dry it in an oven at 120°C for 8 hours, and finally bake it at 500°C for 4 hours to obtain the adsorption material.

[0028] The adsorption performance test of the prepared adsorption material is the same as in Example 1, and its adsorption performance is shown in Table 1.

Embodiment 3

[0030] (1) the preparation method of Pt / BN catalyst is identical with embodiment 1;

[0031] (2)CeO 2 -ZrO 2 The preparation method of catalyst is identical with embodiment 1;

[0032] (3) Mix molecular sieve, Pt / BN and CeO with ZSM-5 (silicon-aluminum ratio is 300) / USY 2 -ZrO 2 The mass ratio of the catalyst is 100:0.5:1, the mass ratio of ZSM-5 (the ratio of silicon to aluminum is 300) to USY molecular sieve is 3:1, and 75g of ZSM-5 (the ratio of silicon to aluminum is 300) and 25g of USY molecular sieve are weighed respectively. Molecular sieves, 0.5g Pt / BN catalyst and 1g CeO 2 -ZrO 2 For the catalyst, add 100ml of deionized water and stir evenly, then fry it in a water bath at 90°C, dry it in an oven at 120°C for 8 hours, and finally bake it at 500°C for 4 hours to obtain the adsorption material.

[0033] The adsorption performance test of the prepared adsorption material is the same as in Example 1, and its adsorption performance is shown in Table 1.

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Abstract

The invention discloses an adsorbent material for adsorbing VOCs and a preparation method thereof. The adsorbent material is composed of a molecular sieve adsorbent and a catalyst, wherein the molecular sieve adsorbent is a ZSM-5 / USY mixed molecular sieve, and the mass ratio of ZSM-5 to the USY molecular sieve is (1-4):1; the catalyst is a mixture of Pt / BN and CeO2-ZrO2, the mass of Pt in the Pt / BN catalyst is 2% of that of BN, and the molar ratio of CeO2 to ZrO2 in the CeO2-ZrO2 catalyst is 7:3; the mass ratio of the ZSM-5 / USY mixed molecular sieve to Pt / BN to the CeO2-ZrO2 catalyst is 100:(0.5-3):(1-6). The preparation method comprises the steps of preparing the Pt / BN catalyst by an impregnation method, adding the CeO2-ZrO2 catalyst and the ZSM-5 and USY molecular sieve, mixing all the materials, adding 100mL deionized water, stirring uniformly, drying and baking, so as to obtain the adsorbent material. The adsorbent material has a large adsorbing capacity, is free of carbon depositduring the desorption process, and is easy to regenerate.

Description

technical field [0001] The invention relates to an adsorption material and a preparation method thereof, in particular to an adsorption material for adsorbing VOCs and a preparation method thereof. Background technique [0002] VOCs (Volatile Organic Compounds) are a class of environmental pollutants with high toxicity. VOCs interact with nitrogen oxides in the air to form particulate matter that can cause photochemical smog and secondary organic pollution, and these particulate matter is the culprit of PM2.5; in addition, most VOCs themselves are highly toxic, Long-term exposure can cause a series of respiratory diseases, sensory irritation symptoms, allergies, nervous system and liver toxicity, and cancer. With the rapid development of the world's economy and science and technology, the VOCs discharged into the atmosphere are increasing, and the scope of pollution is expanding. People are more deeply aware of the harm caused by VOCs. At present, the adsorption method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30B01J29/12B01J29/44B01J29/80B01D53/86B01D53/72B01D53/02
CPCB01D53/02B01D53/8668B01D2257/7027B01D2257/708B01J20/18B01J29/126B01J29/44B01J29/80
Inventor 罗小会张文霞宋宇鹏王勇钱薇
Owner JINHUA VOCATIONAL TECH COLLEGE
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