CN109701481A - A kind of volatile benzenes adsorbent material and preparation method thereof - Google Patents
A kind of volatile benzenes adsorbent material and preparation method thereof Download PDFInfo
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- CN109701481A CN109701481A CN201810416692.6A CN201810416692A CN109701481A CN 109701481 A CN109701481 A CN 109701481A CN 201810416692 A CN201810416692 A CN 201810416692A CN 109701481 A CN109701481 A CN 109701481A
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Abstract
The invention discloses a kind of volatile benzenes adsorbent materials and preparation method thereof, belong to material adsorption technology field.The adsorbent material is activation glass fibre cotton, preparation method are as follows: mix sodium hydroxide, ethyl alcohol and distilled water, it is configured to the sodium hydroxide ethanol water of 2.5Mol/L, the volume ratio of the ethyl alcohol and distilled water is 3:2, glass fibre cotton is placed into, heating stirring reacts 2~4h at 60 DEG C, and ethanol washing is used after taking-up, it is placed in oven and dried, obtains activation glass fibre cotton.The adsorbent material has good adsorption effect to benzene homologues, different for different benzene homologues, is up to 63% to the adsorption efficiency of benzylalcohol.
Description
Technical field
The invention belongs to material adsorption technology fields, and in particular to a kind of volatile benzenes adsorbent material and its preparation side
Method.
Background technique
Widely distributed in air by the volatile organic matter of representative of benzene homologues, there are two types of distribution forms: some with
In air, some are then adsorbed on particulate matter and float in the form of an aerosol in air for gaseous form loss.Volatility benzene
The characteristics of being object, is largely volatilized in construction, slow release in use.Due under this kind of compound room temperature in the form of steam
It is present in air, volatility is larger, and easily diffusion is in an atmosphere, serious to pollute environment and influence human health.In recent years, for
Volatile benzenes content in air, source, genetic analysis and the research of variation tendency, has received widespread attention.
But particulate matter forms the relationship between volatile benzenes concentration, and volatile benzenes are in particulate matter in air
Content, particle diameter distribution and variation tendency are relative complex, and lack effective material or method comprehensively and accurately to monitor volatility
Benzene homologues are restricted the absorption research of the substance.Therefore, the cheap material of development cost and method easy to operate
It is carried out effectively to adsorb monitoring, to have a very important significance to evaluate its influence to human health with harm.
Glass fibre has the function such as preferable fire prevention, sound insulation, absorption, polymer precursor as widely used industrial goods
Can, it is widely used in industry.In existing technology, the glass fibre not being modified is as absorption volatile benzenes
Record and report.
Summary of the invention
The improving eyesight of this hair is to provide a kind of volatile benzenes adsorbent material and preparation method thereof.
The technical scheme adopted by the invention is that:
A kind of volatile benzenes adsorbent material, the adsorbent material are activation glass fibre cotton.
A kind of preparation method of volatile benzenes adsorbent material, comprising the following steps: by sodium hydroxide, ethyl alcohol and distillation
Water mixes, and is configured to the sodium hydroxide ethanol water of 2.5Mol/L, and the volume ratio of the ethyl alcohol and distilled water is 3:
2, glass fibre cotton is placed into, heating stirring reacts 2~4h at 60 DEG C, and ethanol washing is used after taking-up, is placed in oven and dried,
Obtain activation glass fibre cotton.
Preferably, the activation glass fibre cotton is best to the adsorption effect of benzylalcohol.
After activation glass fibre cotton preparation, volatile benzenes are adsorbed.Adsorption experimental apparatus is by 10mL
Round-bottomed flask (being put into magneton), button anti-splash ball, condenser pipe, the rubber stopper with syringe, balloon composition.
Its specific adsorption method are as follows: benzene homologues in round-bottomed flask are heated reach boiling point after, be converted into gaseous state from liquid, on
Rise enter anti-splash ball, with activation glass fibre cotton (hydroxylating glass fibre cotton) contact, partially adsorb, it is unadsorbed then
Continue to ascend into condenser pipe, flows back left as drop afterwards to the cold, also there is small part to remain in condenser pipe.
The data process&analysis method of volatile benzenes adsorbent material: it is 4h that adsorption experiment, which keeps adsorption time,
Time zero is since drop occurs in chamber wall.It is anti-to weigh out the activation glass fibre cotton that above-mentioned preparation method obtains after 4h in the balance
The Δ B of poor quality of front and back is answered, this is practical adsorbed gas quality.And m0For the activation glass fibers being put into before heating in anti-splash ball
Vinylon and cotton blend quality.Adsorbance calculation formula: Q=Δ B/ (m0).Q: adsorbance (unit: mg/g), Δ B: practical adsorbed gas quality
(unit: mg), m0: activation glass fibre cotton quality (unit: g).Meanwhile in order to control error, round-bottomed flask is weighed out in the balance
It is of poor quality before and after reaction, calculate the gaseous mass m of volatilization1；The of poor quality of anti-splash ball reaction front and back is weighed up, calculating remains in anti-
Splash the gaseous mass m in ball2；Use ethyl alcohol rinse condenser pipe, after rotary evaporation, weigh up and remain in condenser pipe after experiment
Gaseous mass m3, it is possible thereby to calculate theoretical adsorption capacity Q0=(m1- m2- m3)/m0And compared with practical adsorbance Q,
Removal rate calculation formula: α=Q/m1Wherein, Q is practical adsorbance, m1For the gaseous mass of volatilization.By the activation after adsorption experiment
Glass fibre cotton takes out, and is first put into oven drying, removes moisture removal, then uses ethyl alcohol rinse, after placing back in oven drying 3h, title
Weight.Δ mc of poor quality before and after ethyl alcohol rinse is to represent the part that physical absorption occurs, and total adsorbance Q is compared with Δ mc,
And relationship comprehensive verification between thermodynamics and adsorption efficiency, adsorption time and adsorption efficiency is expressed as chemisorption or object
Reason absorption.
The invention has the following advantages that
A kind of volatile benzenes adsorbent material provided by the invention and its method processed can be effectively prepared into using this method
To the activated material containing more silicone hydroxyl, which has good adsorption effect to benzene homologues.This activation method preparation
It is different for different benzene homologues to activate mineral wool adsorption effect, to the adsorption efficiency highest of benzylalcohol, reaches 62%.Simultaneously
Influence to evaluation volatile benzenes to human health has a very important significance with harm
Detailed description of the invention
Fig. 1 is super-resolution awkward silence at a meeting scanning electron microscope (SEM) figure before glass fibre cotton activation；
Fig. 2 is super-resolution awkward silence at a meeting scanning electron microscope (SEM) figure activated after glass fibre cotton absorption benzylalcohol；
Fig. 3 is the structural schematic diagram of adsorption experimental apparatus；
Fig. 4 is the adsorption time for activating glass fibre cotton absorption benzylalcohol and the curve graph of adsorbance；
Fig. 5 is the infrared spectrogram for activating glass fibre cotton absorption benzylalcohol.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Embodiment 1
Preparation activation glass fibre cotton: referring to Fig.1, Fig. 1 is that the super-resolution awkward silence at a meeting before glass fibre cotton activation scans electricity
Sub- microscope figure.Sodium hydroxide (10.12g) is weighed, by ethyl alcohol (60mL), distilled water (40mL) mixed preparing obtains sodium hydroxide
Ethanol water, add glass fibre cotton (5g), at 60 DEG C, heating stirring react 2h after, take out with ethyl alcohol rinse extremely
Neutrality, places into baking oven, more than 100 DEG C of dryings for 24 hours.
Embodiment 2
The process for activating glass fibre cotton adsorption experiment is as follows:
Referring to Fig. 3, adsorption experimental apparatus is injected by 10mL round-bottomed flask 1 (being put into magneton), anti-splash ball 3, condenser pipe 2, band
Rubber stopper 5, the balloon 4 of device form.Under nitrogen protection, benzene homologues (0.4~0.6g) are weighed in round-bottomed flask 1, are heated to
Boiling is converted into gaseous state from liquid, and the activated glass fibre cotton of gas (0.1~0.2g) absorption, unadsorbed then enters
Condenser pipe 2, forms liquid afterwards to the cold.
Remarks: the other measures for reducing experimental error are as follows
1. before carrying out adsorption experiment every time, glass fibre cotton will be placed more than for 24 hours in vacuum oven in advance, it is ensured that its
It is sufficiently dried, guarantees that the moisture shown is removed.
2. a whole set of experimental provision will be evacuated, while bottom puts on and is full of after the installation is completed with vacuum pump in device
The balloon 4 of nitrogen, it is ensured that entire adsorption experiment keeps higher air-tightness without gas leak phenomenon.
3. switching to gaseous state from liquid after being heated when drop occurs in chamber wall for benzene homologues and being returned afterwards to the cold in condenser pipe 2
The critical point of stream, from here on timing remove device after 4h.This experiment is 4h to the adsorption time of all benzene homologues.
The data process&analysis method of volatile benzenes adsorbent material: it is 4h that adsorption experiment, which keeps adsorption time,
Time zero is since drop occurs in chamber wall.It is anti-to weigh out the activation glass fibre cotton that above-mentioned preparation method obtains after 4h in the balance
The Δ B of poor quality of front and back is answered, this is practical adsorbed gas quality.And m0For the activation glass being put into before heating in anti-splash ball 3
Cellucotton quality.Adsorbance calculation formula: Q=Δ B/ (m0).Q: adsorbance (unit: mg/g), Δ B: practical adsorbed gas constitution
It measures (unit: mg), m0: activation glass fibre cotton quality (unit: g).Meanwhile in order to control error, round bottom burning is weighed out in the balance
It is of poor quality before and after 1 reaction of bottle, calculate the gaseous mass m of volatilization1；The of poor quality of the reaction of anti-splash ball 3 front and back is weighed up, residual is calculated
Gaseous mass m in anti-splash ball 32；Use ethyl alcohol rinse condenser pipe 2, after rotary evaporation, weigh up and remain in condensation after experiment
Gaseous mass m in pipe 23, it is possible thereby to calculate theoretical adsorption capacity Q0=(m1- m2- m3)/m0And with practical adsorbance Q into
Row comparison, removal rate calculation formula: α=Q/m1Wherein, Q is practical adsorbance, m1For the gaseous mass of volatilization.By adsorption experiment
Rear activation glass fibre cotton takes out, and is first put into oven drying, removes moisture removal, then with ethyl alcohol rinse, places back in oven drying
After 3h, weighing.Δ mc of poor quality before and after ethyl alcohol rinse is to represent the part that physical absorption occurs, total adsorbance Q and Δ mc into
Row compares and relationship comprehensive verification between thermodynamics and adsorption efficiency, adsorption time and adsorption efficiency is expressed as chemistry
Absorption or physical absorption.
Toluene, benzene, benzylalcohol, chlorobenzoyl chloride, benzylalcohol, two are carried out using the activation glass fibre cotton that embodiment 1 is prepared
Toluene, benzaldehyde, styrene, phenol, benzylalcohol adsorption experiment, the parameter of adsorption experiment are shown in Table 1 to table 10, and absorption result is shown in Table
11。
Table 1 activates glass fibre cotton adsorption of aniline parameter
Table 2 activates glass fibre cotton and adsorbs chlorobenzoyl chloride parameter
Table 3 activates glass fibre cotton adsorbing phenol parameter
Table 4 activates glass fibre cotton and adsorbs benzene parameter
Table 5 activates glass fibre cotton and adsorbs dimethylbenzene parameter
Table 6 activates glass fibre cotton and adsorbs benzylalcohol parameter
Table 7 activates glass fibre cotton and adsorbs salicylide parameter
Table 8 activates glass fibre cotton and adsorbs benzaldehyde parameter
Table 9 activates glass fibre cotton and adsorbs styrene parameter
Table 10 activates glass fibre cotton and adsorbs toluene parameter
Table 11 activates glass fibre cotton absorption result
| The mineral wool of naoh treatment | Practical adsorbance (g) | Adsorption rate |
| Toluene | 0.045 | 25% |
| Benzene | 0.109 | 27% |
| Aniline | 0.083 | 52% |
| Chlorobenzoyl chloride | 0.176 | 56% |
| Benzylalcohol | 0.133 | 62% |
| Dimethylbenzene | 0.145 | 35% |
| Benzaldehyde | 0.077 | 21% |
| Styrene | 0.011 | 23% |
| Phenol | 0.228 | 40% |
| Salicylide | 0.166 | 59% |
As can be seen from Table 11, the activation glass fibre cotton that embodiment 1 is prepared is to common volatile containing aromatic radical
Property compound all has certain absorption property, and to the adsorption effect highest of benzylalcohol, has reached 62%.Activate glass fibre cotton
The super-resolution awkward silence at a meeting scanning electron microscope diagram of absorption benzylalcohol is shown in Fig. 2, under identical amplification factor, relative to cellucotton raw material
Fig. 1, the cellucotton surface after absorption show have novel substance to be adsorbed on glass fibre cotton surface with the presence of strip of sheet substance.
Show that adsorption operations are simple from reaction unit Fig. 3, is easy for other systems and carries out explorative experiment research.Under nitrogen protection, number
According to accuracy improve, avoid generating absorption deviation because of gas leakage.The curve graph of the adsorption time and adsorbance that adsorb benzylalcohol is shown in
Fig. 4 reaches saturation after absorption 4 hours from that can obtain in figure, and absorption total amount is constant, has the advantages that adsorption time is short.Activation
The infrared spectrogram of glass fibre cotton absorption benzylalcohol is shown in that Fig. 5, Cong Tuzhong are obtained in 500cm- 1~1500cm- 1Between have it is apparent
Phenyl ring characteristic peak occurs, in 3250cm- 1There is also the stretching vibration peaks of hydroxyl at place.Mineral wool after the naoh treatment, can
As effective adsorbent material to volatile aroma compounds, have many advantages, such as that quality is small, large specific surface area；Experimental implementation letter
It is single, it is easy to amplify experimental study；And to the adsorption efficiency highest of benzylalcohol, in removal volatile aroma compounds, especially
In the use of the analog derivative containing benzylalcohol, there is certain application value.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although ginseng
It is described the invention in detail according to preferred embodiment, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (3)
1. a kind of volatile benzenes adsorbent material, which is characterized in that the adsorbent material is activation glass fibre cotton.
2. a kind of preparation method of volatile benzenes adsorbent material, which comprises the following steps: by sodium hydroxide,
Ethyl alcohol and distilled water mix, and are configured to the sodium hydroxide ethanol water of 2.5Mol/L, the ethyl alcohol and distilled water
Volume ratio is 3:2, places into glass fibre cotton, and heating stirring reacts 2~4h at 60 DEG C, and ethanol washing is used after taking-up, is put into
It is dry in baking oven, obtain activation glass fibre cotton.
3. the preparation method of volatile benzenes adsorbent material according to claim 2, which is characterized in that the activation glass
Glass cellucotton is best to the adsorption effect of benzylalcohol.
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| CN109701483A (en) * | 2018-05-03 | 2019-05-03 | 江汉大学 | A kind of volatile benzenes adsorbent material and preparation method thereof |
| CN112169765A (en) * | 2019-07-01 | 2021-01-05 | 江汉大学 | Fluoro-aryl glass fiber cotton and preparation method and application thereof |
| CN112442896A (en) * | 2019-08-30 | 2021-03-05 | 江汉大学 | Glass fiber cotton containing aryl and application thereof |
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