CN108620031A - A kind of preparation method of composite air purifying agent - Google Patents

A kind of preparation method of composite air purifying agent Download PDF

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CN108620031A
CN108620031A CN201810423167.7A CN201810423167A CN108620031A CN 108620031 A CN108620031 A CN 108620031A CN 201810423167 A CN201810423167 A CN 201810423167A CN 108620031 A CN108620031 A CN 108620031A
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air purifying
silane coupling
composite air
preparation
weight
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郭常青
吴学军
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Anhui Leking Environment Technology Co Ltd
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Anhui Leking Environment Technology Co Ltd
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    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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Abstract

The present invention relates to air purifying preparation technical fields, and in particular to a kind of preparation method of composite air purifying agent, the preparation method of the composite air purifying agent include the following steps:(1) plant fiber is impregnated in alkaline solution and obtains porous plant fiber;(2) in a solvent after mixing by porous plant fiber, diatomite, organic titanate and silane coupling agent, thermal response is carried out, modified porous plant fiber is obtained;(3) modified porous plant fiber, Native Gel, foaming agent and graphene oxide are stirred into 2~4h in a solvent, then at 150~250 DEG C dry 1~3h to get to composite air purifying agent.The composite air purifying agent of the present invention can be adsorbed and degraded to indoor pernicious gas and dust, and indoor air can persistently, be thoroughly purified.

Description

A kind of preparation method of composite air purifying agent
Technical field
The present invention relates to air purifying preparation technical fields, and in particular to a kind of preparation method of composite air purifying agent.
Background technology
The quality of room air is an important factor for influencing health and thought mood.Currently, the sky used both at home and abroad Gas purifying method mainly has air suction method, covering method, oxidizing process etc..Using suction method, heavy mechanical equipment is needed, is being occupied The environment such as room, compartment, lavatory are difficult to carry out;Covering method is but cannot to eliminate smell substance to spray aromatic substance covering smell Injury to human body;Oxidizing process is to generate negative oxygen ion using electrolysis principle to carry out disinfection purification to air, but effect is not Ideal, and higher price.Air purifying preparation be utilize solid absorbent, strong oxidizer and aromatic substance, to room air into The processing of row comprehensive purifying, can thoroughly eliminate peculiar smell, purify air.Common air purifying preparation to the adsorption rate of harmful substance compared with It is low, and service life is low, has a single function.
Invention content
It is of the existing technology the purpose of the invention is to overcome the problems, such as, a kind of composite air purifying agent is provided, its energy It is enough that indoor pernicious gas and dust are adsorbed and degraded, it can persistently, thoroughly purify indoor air.
To achieve the goals above, the present invention provides a kind of preparation method of composite air purifying agent, includes the following steps:
(1) plant fiber impregnates to 5 in alkaline solution~for 24 hours, obtain porous plant fiber;
(2) in a solvent after mixing by porous plant fiber, diatomite, organic titanate and silane coupling agent, surpass 15~30min of sound, then 3~6h of sealing reaction at 80~120 DEG C, obtains modified porous plant fiber;
(3) modified porous plant fiber, Native Gel, foaming agent and graphene oxide are stirred into 2~4h in a solvent, so Afterwards at 150~250 DEG C dry 1~3h to get to composite air purifying agent.
Through the above technical solutions, the present invention mixes porous plant fiber, diatomite and organic titanate, silicon can be made Diatomaceous earth enters with organic titanate in the hole of porous fibre, then carries out closing thermal response, so that organic titanate is decomposed and generates Nano-titanium dioxide is simultaneously reacted with diatomite, and the nano-silica with catalytic performance is in situ generated in the hole of plant fiber Change titanium modification infusorial earth, i.e., modified porous plant fiber, modified porous fiber contains abundant pore structure, can adsorb air In pernicious gas, and situ catalytic degrade, have the function that purify air.
Modified porous fiber, graphene and foaming agent are reacted in Native Gel, it on the one hand can be with graphene to changing Property porous fibre carry out further it is compound, improve the effect of its catalytic degradation;In addition, foaming agent is added in Native Gel, so After be heated at high temperature, porous structure can be formed in gel, improve the specific surface area of gel rubber material, it is net to improve composite air The absorption property of agent.
Specific implementation mode
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of composite air purifying agent, is made of the substance of following parts by weight:5~15 weight of diatomite Part, 30~50 parts by weight of plant fiber, 50~80 parts by weight of alkaline solution, 3~12 parts by weight of organic titanate, silane coupling agent 3~4 parts by weight, 5~8 parts by weight of graphene oxide, 1~5 parts by weight of foaming agent, 80~150 parts by weight of Native Gel, solvent 10 ~50 parts by weight.Under optimum condition, the composite air purifying agent is made of the substance of following parts by weight:6~12 weight of diatomite Measure part, 35~45 parts by weight of plant fiber, 60~75 parts by weight of alkaline solution, 5~10 parts by weight of organic titanate, silane coupled It is 3~4 parts by weight of agent, 5~8 parts by weight of graphene oxide, 1~5 parts by weight of foaming agent, 100~120 parts by weight of Native Gel, molten 10~50 parts by weight of agent.
The present invention also provides a kind of preparation methods of the composite air purifying agent, include the following steps:
(1) plant fiber impregnates to 5 in alkaline solution~for 24 hours, obtain porous plant fiber;
(2) in a solvent after mixing by porous plant fiber, diatomite, organic titanate and silane coupling agent, surpass 15~30min of sound, then 3~6h of sealing reaction at 80~120 DEG C, obtains modified porous plant fiber;
(3) modified porous plant fiber, Native Gel, foaming agent and graphene oxide are stirred into 2~4h in a solvent, so Afterwards at 150~250 DEG C dry 1~3h to get to composite air purifying agent.
Plant fiber is impregnated in alkaline solution in the present invention, the colloid in plant fiber can be removed, to be formed Porous plant fiber, the present invention do not have the type of plant fiber special requirement, such as the plant fiber is selected from stalk fibre Dimension, ramee, hemp, flax fiber, cotton fiber, bamboo fibre, sisal fiber, cocoanut fiber, abaca fibre and Huang At least one of flaxen fiber.
The present invention mixes porous plant fiber, diatomite and organic titanate, can make diatomite and organic titanate Into in the hole of porous fibre, then carry out closing thermal response, make organic titanate decompose generate nano-titanium dioxide and with Diatomite reacts, and the nano-titanium dioxide modified diatomite with catalytic performance is in situ generated in the hole of plant fiber; Under optimum condition, the organic titanate be selected from tetraethyl titanate, tetramethoxy titanate ester, tetraisopropyl titanate, tetrabutyl titanate, At least one of tetra-n-butyl titanate.It is further preferred that the silane coupling agent is selected from Silane coupling agent KH550, silane Coupling agent KH560, silane coupling agent KH570, silane coupling agent KH580, silane coupling agent KH590, silane coupling agent KH792, At least one of silane coupling agent KBM602, silane coupling A 151 and silane coupling A 171.
In the present invention, foaming agent is added in Native Gel, is then heated at high temperature, and porous structure can be formed in gel, The specific surface area for improving gel rubber material, to improve the absorption property of composite air purifying agent.It is described natural under optimum condition Gel is selected from least one of xanthans, karaya gum, gum arabic, bassora gum, algin and guar gum.The hair Infusion is selected from least one of azo-compound, sulfonyl hydrazines compound, nitroso compound and carbonate, such as can be 4,4- oxobenzenesulfonyl hydrazide, azodicarbonamide, N, at least one in N '-dinitrosopentamethlyene tetramines and sodium carbonate Kind.
In order to remove the impurity in diatomite, diatomaceous porosity is improved, to improve absorption of the diatomite to air Rate, the present invention are also modified processing to diatomite, and under optimum condition, the diatomaceous modified technique is:Diatomite is existed 2~5h is calcined at 250~350 DEG C.
It is further preferred that the solvent is selected from acetone, n,N-Dimethylformamide, N-Methyl pyrrolidone, N, N- bis- Methylacetamide, N, N- diethylformamides, ethyl alcohol, acetic acid, ethyl acetate, chloroform, tetrahydrofuran, petroleum ether, dimethyl are sub- At least one of sulfone and water.
The present invention will be described in detail by way of examples below.
Embodiment 1
A kind of composite air purifying agent is made of the substance of following parts by weight:(grain size is 10 parts by weight of diatomite 200nm), 40 parts by weight of ramee, 72 parts by weight of sodium hydroxide solution (2M), 6 parts by weight of tetramethoxy titanate ester, silane coupling agent KH5603 parts by weight, 6 parts by weight of graphene oxide, 2 parts by weight of 4,4- oxobenzenesulfonyl hydrazide, 120 parts by weight of karaya gum, 50 parts by weight of N,N-dimethylformamide.
(1) ramee in sodium hydroxide solution (2M) is impregnated into 12h, obtains porous ramee;
Diatomite is being calcined into 3h at 300 DEG C, is obtaining modification infusorial earth;
(2) by porous ramee, modification infusorial earth (grain size 200nm), tetramethoxy titanate ester and silane coupling agent KH560 In n,N-Dimethylformamide after mixing, ultrasonic 20min, then the sealing reaction 4h at 100 DEG C, obtains modified porous Ramee;
(3) by modified porous ramee, karaya gum, 4,4- oxobenzenesulfonyl hydrazide and graphene oxide in N, N- 3h is stirred in dimethylformamide, and 2h is then calcined at 180 DEG C to get to composite air purifying agent.
Embodiment 2
A kind of composite air purifying agent is made of the substance of following parts by weight:(grain size is 12 parts by weight of diatomite 500nm), 35 parts by weight of cotton fiber, 75 parts by weight of sodium hydroxide solution (2M), 5 parts by weight of tetrabutyl titanate, silane coupled Agent KH5503 parts by weight, 5 parts by weight of graphene oxide, N, 3 parts by weight of N '-dinitrosopentamethlyene tetramines, 120 weight of algin Measure part, 50 parts by weight of water.
(1) cotton fiber in sodium hydroxide solution (2M) is impregnated into 12h, obtains porous cotton fiber;
Diatomite is being calcined into 3.5h at 280 DEG C, is obtaining modification infusorial earth;
(2) porous cotton fiber, diatomite (grain size 500nm), tetrabutyl titanate and Silane coupling agent KH550 are existed In water after mixing, ultrasonic 25min, then the sealing reaction 5h at 100 DEG C, obtains modified porous cotton fiber;
(3) by modified porous cotton fiber, algin, N, N '-dinitrosopentamethlyene tetramines and graphene oxide exist 2.5h is stirred in water, and 1.5h is then calcined at 200 DEG C to get to composite air purifying agent.
Embodiment 3
A kind of composite air purifying agent is made of the substance of following parts by weight:6 parts by weight (grain size 500nm) of diatomite, 45 parts by weight of tossa, 60 parts by weight of sodium hydroxide solution (2M), 10 parts by weight of tetra-n-butyl titanate, silane coupling agent KH5704 parts by weight, 8 parts by weight of graphene oxide, 4 parts by weight of azodicarbonamide, 100 parts by weight of guar gum, N- methylpyrroles 50 parts by weight of alkanone.
(1) tossa in sodium hydroxide solution (2M) is impregnated into 10h, obtains porous tossa;
Diatomite is being calcined into 5h at 250 DEG C, is obtaining modification infusorial earth;
(2) porous tossa, diatomite (grain size 500nm), silane coupling agent KH570 and tetra-n-butyl titanate are existed In N-Methyl pyrrolidone after mixing, ultrasonic 20min, then the sealing reaction 4h at 100 DEG C, obtains modified porous jute Fiber;
(3) by modified porous tossa, guar gum, azodicarbonamide and graphene oxide in N-Methyl pyrrolidone Then middle stirring 3.5h calcines 1h to get to composite air purifying agent at 200 DEG C.
Embodiment 4
A kind of composite air purifying agent is made of the substance of following parts by weight:(grain size is 15 parts by weight of diatomite 600nm), 30 parts by weight of cocoanut fiber, 80 parts by weight of sodium hydroxide solution (2M), 3 parts by weight of sour four N-butyl, silane coupling agent A1513.2 parts by weight, 7 parts by weight of graphene oxide, 5 parts by weight of sodium carbonate, 80 parts by weight of gum arabic, 10 weight of ethyl alcohol Part.
(1) cocoanut fiber in sodium hydroxide solution (2M) is impregnated into 5h, obtains porous cocoanut fiber;
Diatomite is calcined into 2h at 350 DEG C, obtains modification infusorial earth;
(2) by porous cocoanut fiber, diatomite (grain size 600nm), silane coupling A 151 and sour four N-butyls in second In alcohol after mixing, ultrasonic 30min, then the sealing reaction 3h at 120 DEG C, obtains modified porous cocoanut fiber;
(3) modified porous cocoanut fiber, gum arabic, sodium carbonate and graphene oxide are stirred into 2h in ethanol, so 1h is calcined at 250 DEG C afterwards to get to composite air purifying agent.
Embodiment 5
A kind of composite air purifying agent is made of the substance of following parts by weight:5 parts by weight (grain size 800nm) of diatomite, 50 parts by weight of sisal fiber, 50 parts by weight of sodium hydroxide solution (2M), 12 parts by weight of tetraethyl titanate, silane coupling agent KBM6023.5 parts by weight, 6 parts by weight of graphene oxide, 2.3 parts by weight of azodicarbonamide, 150 parts by weight of karaya gum, 45 parts by weight of water.
(1) sisal fiber is impregnated for 24 hours in sodium hydroxide solution (2M), obtains porous sisal fiber;
(2) porous sisal fiber, diatomite (grain size 800nm), silane coupling agent KBM602 and tetraethyl titanate are existed In water after mixing, ultrasonic 15min, then the sealing reaction 6h at 80 DEG C, obtains modified porous sisal fiber;
(3) modified porous ramee, karaya gum, azodicarbonamide and graphene oxide are stirred in water Then 4h calcines 3h to get to composite air purifying agent at 150 DEG C.
Comparative example 1
A kind of composite air purifying agent is made of the substance of following parts by weight:40 parts by weight of ramee, tetramethoxy titanate ester 6 parts by weight, silane coupling agent KH5603 parts by weight, 6 parts by weight of graphene oxide, 2 parts by weight of 4,4- oxobenzenesulfonyl hydrazide, thorn 120 parts by weight of karaya, 50 parts by weight of N,N-dimethylformamide.
(1) ramee in sodium hydroxide solution (2M) is impregnated into 12h, obtains porous ramee;
(2) by porous ramee, tetramethoxy titanate ester in n,N-Dimethylformamide after mixing, ultrasonic 20min, Then the sealing reaction 4h at 100 DEG C, obtains modified porous ramee;
(3) by modified porous ramee, karaya gum, 4,4- oxobenzenesulfonyl hydrazide and graphene oxide in N, N- 3h is stirred in dimethylformamide, and 2h is then calcined at 180 DEG C to get to composite air purifying agent.
Comparative example 2
A kind of composite air purifying agent is made of the substance of following parts by weight:(grain size is 10 parts by weight of diatomite 200nm), 40 parts by weight of ramee, 72 parts by weight of sodium hydroxide solution (2M), 6 parts by weight of tetramethoxy titanate ester, silane coupling agent KH5603 parts by weight, 2 parts by weight of 4,4- oxobenzenesulfonyl hydrazide, 120 parts by weight of karaya gum, N,N-dimethylformamide 50 Parts by weight.
(1) ramee in sodium hydroxide solution (2M) is impregnated into 12h, obtains porous ramee;
Diatomite is being calcined into 3h at 300 DEG C, is obtaining modification infusorial earth;
(2) by porous ramee, modification infusorial earth (grain size 200nm), tetramethoxy titanate ester and silane coupling agent KH560 In n,N-Dimethylformamide after mixing, ultrasonic 20min, then the sealing reaction 4h at 100 DEG C, obtains modified porous Ramee;
(3) by modified porous ramee, karaya gum, 4,4- oxobenzenesulfonyl hydrazide in N,N-dimethylformamide Then middle stirring 3h calcines 2h to get to composite air purifying agent at 180 DEG C.
Experiment test:
Composite air purifying agent in 1-5 of the embodiment of the present invention and comparative example 1-2 evaluates the purifying property of pernicious gas It is carried out in the straight type polytetrafluoroethylene (PTFE) pipe reactor of Φ 20mm, long 200mm, polyfluortetraethylene pipe is added in composite air purifying agent In reactor, it is -1.0KPa that polytetrafluoroethylene (PTFE) pipe reactor, which is then evacuated to pressure, then to polytetrafluoroethylene (PTFE) tube reaction Unstripped gas is injected in device to normal pressure, tests under different time compound air purification filter core to the purifying rate of pernicious gas, unstripped gas Group becomes:Concentration of formaldehyde 6ppm, benzene concentration 5ppm, remaining is air.Reaction carries out under 25 DEG C of atmospheric pressure environments, and experimental result is such as Shown in table 1.
Table 1:The purifying property of embodiment 1-5 and the air purifying preparation in comparative example 1-2
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In the skill of the present invention In art conception range, technical scheme of the present invention can be carried out a variety of simple variants, including each technical characteristic with it is any its Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to Protection scope of the present invention.

Claims (8)

1. a kind of preparation method of composite air purifying agent, which is characterized in that include the following steps:
(1) plant fiber impregnates to 5 in alkaline solution~for 24 hours, obtain porous plant fiber;
(2) in a solvent after mixing by porous plant fiber, diatomite, organic titanate and silane coupling agent, ultrasound 15 ~30min, then 3~6h of sealing reaction at 80~120 DEG C, obtains modified porous plant fiber;
(3) modified porous plant fiber, Native Gel, foaming agent and graphene oxide are stirred into 2~4h in a solvent, then existed Dry 1~3h is to get to composite air purifying agent at 150~250 DEG C.
2. the preparation method of composite air purifying agent according to claim 1, which is characterized in that the plant fiber is selected from Stalk fibre, ramee, hemp, flax fiber, cotton fiber, bamboo fibre, sisal fiber, cocoanut fiber, abaca are fine At least one of peacekeeping tossa.
3. the preparation method of composite air purifying agent according to claim 2, which is characterized in that the organic titanate choosing From at least one of tetraethyl titanate, tetramethoxy titanate ester, tetraisopropyl titanate, tetrabutyl titanate, tetra-n-butyl titanate.
4. the preparation method of composite air purifying agent according to claim 1, which is characterized in that the silane coupling agent choosing From Silane coupling agent KH550, silane coupling agent KH560, silane coupling agent KH570, silane coupling agent KH580, silane coupling agent In KH590, silane coupling agent KH792, silane coupling agent KBM602, silane coupling A 151 and silane coupling A 171 at least It is a kind of.
5. the preparation method of composite air purifying agent according to claim 1, which is characterized in that the foaming agent is selected from even At least one of nitrogen compound, sulfonyl hydrazines compound, nitroso compound and carbonate.
6. the preparation method of composite air purifying agent according to claim 1, which is characterized in that the Native Gel is selected from At least one of xanthans, karaya gum, gum arabic, bassora gum, algin and guar gum.
7. the preparation method of composite air purifying agent according to claim 1, which is characterized in that further include diatomaceous change Property processing, the modification process is:2~5h is calcined at 250~350 DEG C.
8. the preparation method of composite air purifying agent according to claim 1, which is characterized in that the solvent is selected from third Ketone, N,N-dimethylformamide, N-Methyl pyrrolidone, DMAC N,N' dimethyl acetamide, N, N- diethylformamides, ethyl alcohol, vinegar At least one of acid, ethyl acetate, chloroform, tetrahydrofuran, petroleum ether, dimethyl sulfoxide (DMSO) and water.
CN201810423167.7A 2018-05-05 2018-05-05 A kind of preparation method of composite air purifying agent Pending CN108620031A (en)

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Application publication date: 20181009