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Preparation method for catalysis/adsorption material by taking kieselguhr as carrier

An adsorption material, diatomite technology, applied in the direction of chemical instruments and methods, separation methods, chemical/physical processes, etc., can solve the problems of easy poisoning of adsorbents, huge equipment, complicated processes, etc., and achieve improved catalytic activity and pore distribution Reasonable, high catalytic activity effect

Inactive Publication Date: 2014-12-24
杭州最清环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the equipment is huge and the process is complicated. When there are colloidal substances or other impurities in the exhaust gas, the adsorbent is easy to be poisoned.

Method used

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  • Preparation method for catalysis/adsorption material by taking kieselguhr as carrier
  • Preparation method for catalysis/adsorption material by taking kieselguhr as carrier
  • Preparation method for catalysis/adsorption material by taking kieselguhr as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1, a kind of preparation method of catalysis / adsorption material, carries out following steps successively:

[0059] 1), the diatomite is purified according to the above-mentioned method one, and the purified diatomite is obtained;

[0060] 2), at room temperature, weigh 3 g of purified diatomite, add 45 g of absolute ethanol, and stir magnetically (stirring time is 0.5 hour), thereby forming diatomite-absolute ethanol slurry;

[0061] Place the diatomite-dehydrated ethanol pulp on a magnetic stirrer, and under the action of magnetic stirring, add manganese nitrate aqueous solution 2ml (containing 3g manganese nitrate), alumina 0.3 g and 0.3g of glass fiber powder, then add dropwise 0.09g of 65% concentrated nitric acid and 20g of deionized water, and mix and stir for 24 hours;

[0062] 3), using deionized water to centrifugally wash the product of step 2) until the eluent is neutral; obtain the washed pulp;

[0063] 4) The above-mentioned washed pulp was d...

Embodiment 2

[0064] Embodiment 2, a kind of preparation method of catalysis / adsorption material, carries out following steps successively:

[0065] 1), the diatomite is purified according to the above-mentioned method one, and the purified diatomite is obtained;

[0066] 2) At room temperature, weigh 3 g of purified diatomite, add 45 g of absolute ethanol, and stir magnetically (stirring time is at least 0.5 hours), thereby forming a diatomite-absolute ethanol slurry;

[0067] Place the diatomite-dehydrated ethanol pulp on a magnetic stirrer, and under the action of magnetic stirring, add manganese nitrate aqueous solution 4ml (containing 6g manganese nitrate), aluminum oxide 0.3 g, 0.3g of glass fiber powder, then add dropwise 0.09g of 65% concentrated nitric acid and 20g of deionized water, and mix and stir for 24 hours;

[0068] 3), using deionized water to centrifugally wash the product of step 2) until the eluent is neutral; obtain the washed pulp;

[0069] 4) The above-mentioned wa...

Embodiment 3

[0070] Embodiment 3, a kind of preparation method of catalysis / adsorption material, carries out following steps successively:

[0071] 1), the diatomite is purified according to the above-mentioned method one, and the purified diatomite is obtained;

[0072] 2) At room temperature, weigh 3 g of purified diatomite, add 45 g of absolute ethanol, and stir magnetically (stirring time is at least 0.5 hours), thereby forming a diatomite-absolute ethanol slurry;

[0073] Place the diatomite-dehydrated ethanol pulp on a magnetic stirrer, and under the action of magnetic stirring, add manganese nitrate aqueous solution 6ml (containing 9g manganese nitrate), aluminum oxide 0.3 g, 0.3g of glass fiber powder, then add dropwise 0.09g of 65% concentrated nitric acid and 20g of deionized water, and mix and stir for 24 hours;

[0074] 3), using deionized water to centrifugally wash the product of step 2) until the eluent is neutral; obtain the washed pulp;

[0075] 4) The above-mentioned wa...

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Abstract

The invention discloses a preparation method for a catalysis / adsorption material by taking kieselguhr as a carrier. The preparation method comprises the following steps of adding 15-20 parts of absolute ethyl alcohol into 1 part of purified kieselguhr, then adding 1-3 parts of a metal compound, 0.1-0.3 part of aluminum oxide, 0.1-0.3 part of glass fibers, 0.02-0.04 part of nitric acid and 5-7 parts of deionized water in sequence under magnetic stirring for mixing and stirring; performing centrifugal washing on obtained substances by the deionized water; and drying washed ore pulp at first, and then calcining the ore pulp, thus obtaining the catalysis / adsorption material. The catalysis / adsorption material prepared by the method disclosed by the invention can prolong the retention time of organic pollutants in a reactor by using the adsorption capacity of kieselguhr, and loaded metal oxide can generate a relatively good catalytic oxidation effect in a discharging process, so that the oxidization degree of organic pollutants is increased.

Description

technical field [0001] The invention belongs to the field of environmental materials, and specifically relates to a catalyst / adsorption material with diatomite as a carrier and a preparation method thereof. Background technique [0002] Volatile organic pollutants (VOCs) refer to organic compounds with a boiling point of 50°C to 260°C at room temperature. The main sources are: (1) Stationary sources: waste gas emitted by industries such as petrochemical, pharmaceutical, and paint production; (2) Mobile sources: exhaust gas emitted by vehicles such as vehicles. Although human-made VOCs in the atmosphere only account for about 15% of the total global exhaust emissions, most VOCs are toxic and even highly carcinogenic, posing a huge threat to human health. In addition, the emission of VOCs leads to the destruction of the ozone layer, aggravates the greenhouse effect, and can cause photochemical smog, which also causes immeasurable damage to the ecological environment. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/14B01J20/30B01J23/34B01J23/68B01D53/02B01D53/86B01D53/44
Inventor 郑欣丹吴国勋吴祖良
Owner 杭州最清环保科技有限公司
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