WO2005028100A1 - Element purificateur d'air et filtre utilisant un nanocornet - Google Patents

Element purificateur d'air et filtre utilisant un nanocornet Download PDF

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Publication number
WO2005028100A1
WO2005028100A1 PCT/JP2004/013356 JP2004013356W WO2005028100A1 WO 2005028100 A1 WO2005028100 A1 WO 2005028100A1 JP 2004013356 W JP2004013356 W JP 2004013356W WO 2005028100 A1 WO2005028100 A1 WO 2005028100A1
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Prior art keywords
filter
carbon nanohorn
carbon
air
tobacco
Prior art date
Application number
PCT/JP2004/013356
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English (en)
Japanese (ja)
Inventor
Takeshi Azami
Tsutomu Yoshitake
Yoshimi Kubo
Sumio Iijima
Ichirou Ishida
Daisuke Kasuya
Original Assignee
Nec Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corporation filed Critical Nec Corporation
Priority to JP2005514032A priority Critical patent/JP4618128B2/ja
Publication of WO2005028100A1 publication Critical patent/WO2005028100A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/163—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid 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
    • B01J20/205—Carbon nanostructures, e.g. nanotubes, nanohorns, nanocones, nanoballs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0216—Other waste gases from CVD treatment or semi-conductor manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/414—Further details for adsorption processes and devices using different types of adsorbents
    • B01D2259/4141—Further details for adsorption processes and devices using different types of adsorbents within a single bed
    • B01D2259/4145—Further details for adsorption processes and devices using different types of adsorbents within a single bed arranged in series
    • B01D2259/4146—Contiguous multilayered adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4541—Gas separation or purification devices adapted for specific applications for portable use, e.g. gas masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means

Definitions

  • the present invention relates to an air purifying member and a filter using a carbon nanohorn.
  • cigarette smoke purification technology There are two main types of cigarette smoke purification technology.
  • One is the technology for purifying tobacco smoke, which is directly absorbed by smokers, that is, the mainstream smoke, and the technology for purifying sidestream smoke that is inhaled by people around the smoker.
  • a typical example is a charcoal filter in which granular activated carbon is dispersed and supported on a fibrous filter.
  • the charcoal filter is a crimped fiber bundle that is spread into a sheet at the time of manufacturing the filter, or is a sheet obtained by adding activated carbon to the paper with an upward force and then bunching the sheet into a rod.
  • Air purifiers have the function of removing specified substances and odors in tobacco sidestream smoke, and are widely used for business, home, and vehicle use.
  • Activated carbon is also frequently used in filters used in such air purifiers (Patent Document 2).
  • Activated carbon is effective for a relatively large number of gases and is inexpensive. , And has been favorably used as a filter material.
  • odorous substances such as tobacco and the like may adhere and the removal performance may decrease.
  • the amount of treated air is reduced and the dust removing effect of the air purifier itself is reduced.
  • the fan capacity is increased to compensate for the decrease in the air volume and the air volume is increased, problems such as increased noise will occur.
  • Patent Document 3 discloses an air purifying filter using carbon nanotubes instead of activated carbon or the like. This document describes a technique for applying a filter containing carbon nanotubes to a chemical filter used in a semiconductor manufacturing process. However, according to the study of the present inventors, it has been found that it is difficult to obtain sufficient removal performance with carbon nanotubes. In particular, it has been found that the action of removing nicotine in tobacco is not at a satisfactory level.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2001-95552
  • Patent Document 2 JP-A-6-319790
  • Patent Document 3 JP-A-11-221414
  • Patent Document 4 JP 2002-159851 A
  • Patent Document 5 Japanese Patent Application Laid-Open No. 2003-225561
  • An object of the present invention is to provide a member and a filter for removing a predetermined substance contained in air. Specifically, an object of the present invention is to provide an air purifying member having a high efficiency of removing contaminants and the like in the air, and to provide a tobacco filter for removing substances such as tobacco smoke and nicotine.
  • an air purifying member including a carbon nanohorn.
  • a tobacco filter characterized by including a carbon nanohorn.
  • the present invention has been made based on the new finding that carbon nanohorns can effectively remove contaminants in air, particularly nicotine.
  • ADVANTAGE OF THE INVENTION According to this invention, the remarkable air purifying effect is obtained by the removal capability of the specific component in the air which a carbon nanohorn has. This purification action is remarkably superior to activated carbon and carbon nanotubes described in the related art.
  • Patent Document 5 discloses an element for storing hydrogen gas and the like (abstract and the like). This element is installed in a gas container and is used for storing hydrogen and the like.
  • a configuration including a base through which air can flow, and a carbon nanohorn disposed in the base.
  • the carbon nanohorn refers to a horn-shaped substance formed of a graphite sheet.
  • a carbon nanohorn aggregate formed of a plurality of carbon nanohorns is called a carbon nanohorn aggregate.
  • the air purifying member refers to an external air force that removes a predetermined component to purify the air.
  • the form is not particularly limited, and various forms can be used.
  • a tobacco filter is a form of an air purification member, and is a filter that is attached to one end of a tobacco and removes a predetermined substance contained in a main smoke stream. For example, it refers to a filter that removes components such as nicotine and purifies air containing tobacco smoke.
  • the carbon nanohorn since the carbon nanohorn is used, a predetermined substance contained in air can be efficiently removed.
  • the effect of removing nicotine is remarkable, and it can be suitably applied as a cigarette smoke filter.
  • an air purifier including the air purifying member. Since the air purifier of the present invention includes the air purifying member including the carbon nanohorn, the air in the outside world can be efficiently purified and returned to the outside world.
  • FIG. 1 is a view showing a TEM observation result showing a structure of a Darier type carbon nanohorn.
  • FIG. 2 is a view showing a TEM observation result showing a structure of a Darier type carbon nanohorn.
  • FIG. 3 is a view showing a configuration example of an apparatus for manufacturing a carbon nanohorn.
  • FIG. 4 is a view for explaining a definition of an irradiation angle in the manufacturing apparatus shown in FIG. 3.
  • FIG. 5 is a view showing a TEM observation result showing a structure of a carbon nanohorn obtained in an example.
  • FIG. 6 is a view showing a TEM observation result showing a structure of a carbon nanohorn obtained in an example.
  • FIG. 7 is a schematic configuration diagram of a tobacco filter according to an embodiment.
  • FIG. 8 is a diagram showing an example of the configuration of the tobacco filter according to the embodiment.
  • FIG. 9 is a schematic configuration diagram of an air purifier according to the embodiment.
  • FIG. 10 is a diagram showing a configuration of a filter attached to the air purifier shown in FIG. 9.
  • FIG. 11 is a diagram for explaining a method of evaluating the performance of a tobacco filter.
  • FIG. 12 is a diagram showing performance evaluation results of the tobacco filter.
  • FIG. 13 is a diagram showing performance evaluation results of the tobacco filter.
  • carbon nanohorn is used as a filter material.
  • the carbon nanohorn will be described.
  • Carbon nanohorns are angular (horn) -like substances composed of graphite sheet. Conventionally, carbon nanohorns have been classified into a dary type, a bud type, and the like based on their morphological characteristics.
  • FIG. 1 and FIG. 2 show a dahlia-type carbon nanohorn. This structure is manufactured by using a device having no cooling means and targeting a graphite rod. In the dahlia type, as shown in Fig. 1 and Fig. 2, there is a dense part of the graphite sheet (the thick black part in the figure). In addition, the horn structures are overlapping or bent, and the aggregate contains various types of horns.
  • the node type has a structure very similar to the amorphous structure.
  • the morphological feature is that the horn hardly protrudes from the aggregate.
  • the present inventor has succeeded in producing a carbon nanohorn having a shape different from the displacement.
  • the present inventors refer to such a carbon nanohorn having a unique shape as a carbon nano baby finger (hereinafter, appropriately referred to as “CNBF”) and distinguish it from a conventional carbon nanohorn.
  • CNBF carbon nano baby finger
  • each of the nanohorns has an independent shape, and the overlap of the horn structure such as dahlia is relatively small, and it has a different shape from the aggregated shape such as the bad type. ing.
  • the diameter of the carbon nanohorn aggregate is 80 to 120 nm in the dary type, and the size of the bad type is about 10% smaller than that of the dahlia type.
  • CNBF has a diameter of 50 nm or less, and has a smaller size than the above-mentioned type of carbon nanohorn.
  • CNBF has a specific structure different from conventional carbon nanohorns, and can be suitably used as a filter material.
  • FIG. 3 is a diagram showing an example of a carbon nanohorn manufacturing apparatus. 3 has a structure in which a manufacturing channel 107 and a carbon nanohorn recovery chamber 119 are connected via a recovery pipe 155.
  • Argon is introduced into the manufacturing chamber 107 from the inert gas supply unit 127 via a flow meter 129. During the production of the carbon nanohorn, a predetermined amount of argon is kept flowing.
  • a graphite rod 101 supported by a target support member 116 is arranged in the manufacturing chamber 107.
  • the graphite rod 101 has a cylindrical shape and is driven to rotate by a rotating device 115.
  • the laser light 103 emitted from the laser light source 111 is applied to the side surface of the graphite rod 101 via the ZnSe lens 123 and the ZnSe window 113.
  • the ZnSe lens 123 emits laser light 103 ⁇ .
  • the ZnSe window 113 is a window for guiding the laser beam 103 into the manufacturing chamber 107.
  • the lateral force of the graphite rod 101 irradiated with the laser beam 103 also causes carbon to evaporate and generate a plume 109.
  • the irradiation angle of the laser beam 103 is preferably 30 ° or more and 60 ° or less.
  • the irradiation angle is defined as an angle between a line segment connecting the irradiation position and the center of the circle and a horizontal plane in a cross section perpendicular to the length direction of the graphite rod 101, as shown in FIG.
  • the irradiation angle be 40 ° to 50 °.
  • the ratio of the carbon nanohorn aggregates 117 in the product can be further improved.
  • the yield of carbon nanohorn can be measured as follows.
  • the carbon nanohorn is After ultrasonic dispersion in the body, the liquid is spread on a sample stage and observed by TEM.
  • the magnification is, for example, about 30,000.
  • the recovery pipe 155 is provided in the direction in which the plume 109 is generated, and is disposed so as to cover a part of the plume 109.
  • the shape of the recovery tube 155 is cylindrical here, but is not limited to this, and various types can be used.
  • the evaporated carbon is led to the carbon nanohorn recovery chamber 119 via the recovery pipe 155, and is recovered as the carbon nanohorn aggregate 117.
  • a cooling tank 150 containing liquid nitrogen 151 is arranged in the recovery pipe 155.
  • the cooling tank 150 controls the temperature of the plume 109 to be low and cools the carbon vapor when passing through the recovery pipe 155.
  • the cooled carbon vapor is recovered as a carbon nanohorn assembly 117 controlled to a desired shape and size.
  • the cooling temperature of the carbon vapor can be, for example, ⁇ 50 ° C. or lower, preferably ⁇ 100 ° C. or lower. By doing so, CNBF as carbon nanohorn aggregate 117 can be produced more stably.
  • the cooling section filled with liquid nitrogen 151 (boiling point: 196 ° C) in the cooling tank 150 converts the carbon vapor generated from the graphite rod 101 into an argon liquid. It can be cooled down to the temperature (110 ° C).
  • the cooling temperature is not particularly limited, but may be, for example, ⁇ 120 ° C. or higher.
  • the carbon nanohorn thus obtained has, for example, a form as shown in Figs.
  • the observation image shown is obtained by dispersing the obtained carbon nanohorn in a predetermined dispersion medium and observing it with a transmission electron microscope.
  • the carbon nanohorn assembly 117 using the manufacturing apparatus of FIG. 3 will be specifically described.
  • the graphite rod 101 high-purity graphite, for example, round rod-shaped sintered carbon or compression molded carbon can be used.
  • the laser beam 103 for example, a laser beam such as a high-output CO gas laser beam is used.
  • Irradiation of the laser beam 103 onto the graphite rod 101 is performed using a rare gas such as Ar or He.
  • Reaction inert gas atmosphere including, performed for example 10 3 Pa or more 10 5 Pa in the following atmosphere.
  • rough force Ji is preferably an inert gas atmosphere.
  • the output of the laser beam 103 is, for example, 3 kW or more and 5 kW or less, and the pulse width is, for example, 20 Omsec or more and 2000 msec or less, preferably 750 msec or more and 1250 msec or less. Further, preferable irradiation angles are as described above with reference to FIG.
  • the spot diameter of the laser beam 103 on the side of the graphite rod 101 at the time of irradiation can be, for example, 0.5 mm or more and 5 mm or less.
  • the rotating rod 115 rotates the graphite rod 101 in the circumferential direction at a constant speed.
  • the rotation speed is, for example, not less than 0.05 rpm and not more than 50 rpm.
  • the soot-like substance obtained by the irradiation with the laser beam 103 is collected and deposited on a suitable substrate having a structure in which the soot-like substance is collected in the carbon nanohorn collection chamber 119. It can also be collected by a method of collecting fine particles using a dust bag.
  • an inert gas is allowed to flow in the reaction vessel, and soot-like substances can be recovered by the flow of the inert gas.
  • the soot-like substance obtained by using the apparatus of FIG. 3 mainly includes carbon nanohorn aggregates 117.
  • the carbon nanohorn aggregate 117 is recovered as a substance containing 90 wt% or more.
  • the carbon nanohorn obtained by the above method is advantageous in device application where the portion having a graphite sheet structure is extremely small.
  • the carbon nanohorn obtained by the above method is significantly different in size and shape from the conventional one.
  • the typical value range of the conventional carbon nanohorn structure is that the horn length along the axial direction is 10 to 30 nm, and the diameter perpendicular to the axial direction is 6 nm or less, typically 2 to 4 nm.
  • the carbon nanohorn structure The horn length is lOnm or less, typically 2-5 nm, and the diameter perpendicular to the axial direction is 4 nm or less, typically 1-2 nm.
  • CNBF The method of manufacturing CNBF has been described above as an example. If a cooling member such as the cooling tank 150 is not provided, a normal dary-type or bad-type carbon nanohorn can be manufactured.
  • a force using a “carbon nanohorn aggregate” as the “carbon nanohorn” unless otherwise specified, a non-carbon nanohorn may be used.
  • FIG. 7 is a schematic configuration diagram of a tobacco filter according to the present embodiment.
  • the tobacco filter 210 includes a storage section 202 having an insertion port 208 at one end of the main body, and is configured to detachably insert and hold the tobacco 200 in this portion.
  • On the other end side there is provided a suction port 212 for a smoker to suck in cigarette smoke contained in his / her mouth.
  • a portion of the storage section 202 that also reaches the suction port 212 is connected by a flue 204 that passes through the inside of the main body.
  • a nicotine removal filter 206 is provided in the middle of the flue 204. Another filter may be provided before or after the nicotine removal filter 206! /.
  • Nicotine removal filter 206 is made of a carbon nanohorn molded body.
  • the carbon nanohorn molded article can be obtained by compression-molding the carbon nanohorn produced by the method described above. At the time of molding, it is also possible to appropriately use a molding binder.
  • any of the above-mentioned CNBF type, Dary type, bud type, and shift may be used.
  • an organic binder and Z or an inorganic binder are used. These may be used alone or in combination of two or more.
  • an organic binder or an inorganic binder is used, and both may be used in combination. These may be used alone or in combination of two or more.
  • the organic binder include polysaccharides; cellulose compounds such as methylcellulose and hydroxymethylcellulose; and polyhydric hydroxy compounds such as glycerin and ethylene glycol. Can be.
  • examples of the inorganic binder include clay minerals such as natural clay, kaolin, bentonite, and sepiolite; and inorganic hydrated or inorganic hydrated products such as alumina, alumina hydroxide, silica, and titer. can give.
  • the tobacco 200 and the tobacco filter 210 in the state of FIG. 7A are integrated, and one end of the tobacco 200 is stored in the storage section 202 as shown in FIG. 7B.
  • Tobacco smoke passes through the flue 204 and then through the nicotine removal filter 206. As a result, the amount of nicotine taken into the body of the smoker can be significantly reduced.
  • FIG. 8 shows the configuration of the tobacco filter according to the present embodiment.
  • This tobacco filter comprises a nicotine removal filter 304 and fibrous filters 302 and 306 disposed before and after the filter.
  • the nicotine removal filter 304 can use the carbon nanohorn molded body described in the first embodiment.
  • Filter materials include, for example, cellulose (such as wood pulp and linter pulp after fibrillation, regenerated cellulose (such as viscose rayon and cuprammonium rayon)), cellulose ester, and synthetic polymers (polyester, polyurethane, etc.). , Polyamide, polyethylene, polypropylene, etc.), and the filter material may be in the form of fiber, sheet or paper (such as a sheet having a papermaking structure).
  • Preferred filter materials include cellulose fiber and Z or cellulose ester fiber, and often include at least cellulose ester fiber to improve taste.
  • Cellulose ester fibers include, for example, cellulose acetate, cell Organic acid esters such as cellulose propionate and cellulose butyrate (for example, esters with an organic acid having about 2 to 4 carbon atoms); mixed acid esters such as cellulose acetate propionate and cellulose acetate butyrate; Cellulose ester derivatives such as sesame ester and the like are exemplified. These cellulose ester fibers can also be used alone or in combination of two or more.
  • a molded product of carbon nanohorn is used as a filter.
  • a configuration in which carbon nanohorn is adhered to a base through which air can pass can be used.
  • a fiber bundle obtained by mixing carbon nanohorn into a fiber bundle such as cellulose acetate fiber can be used.
  • the carbon nanohorn may be attached to the fiber bundle using a binder, or may be simply mixed in the fiber bundle.
  • the type of the substrate is not limited to cellulose acetate fiber, and those exemplified in the second embodiment can be used.
  • the solder for example, the materials exemplified in the first embodiment can be used.
  • FIG. 9 is a schematic configuration diagram of an air purifier 430 according to the present embodiment.
  • the air purifier 430 has a structure in which a filter 400 is provided on a top surface of a main body 415.
  • the tobacco smoke sucked from the filter 400 after being cleaned by the filter 400, moves in the main body 415 by the airflow generated by the fan 420, and is discharged from the outlet 425 to the outside of the purifier. .
  • the filter 400 has a structure as shown in FIG. That is, on the main body 415, the deodorizing filter 408, the nicotine removing filter 406, the pre-filter 404, and the mounting frame 402 are stacked in this order and fixed by the fixing tool 401.
  • the pre-filter 404 removes dust in the air.
  • the deodorizing filter 408 adsorbs and deodorizes aldehydes and the like, which are odor components of tobacco.
  • the nicotine removal filter 406 is formed of a sheet-like molded body of carbon nanohorn. ing.
  • the carbon nanohorn used as a raw material can be obtained by the method described above, and may be any of a C NBF type, a Darrier type, and a bud type.
  • a sheet-like molded body can be obtained by compression molding these. In molding, a binder may be used as appropriate.
  • the types of binders that can be used can be the same as those exemplified in the third embodiment.
  • tobacco smoke first passes through the pre-filter 404, and dust in the air is removed.
  • the passed air then passes through a nicotine removal filter 406, which removes nicotine.
  • the smell of the tobacco is reduced through the deodorizing filter 408, and the air becomes clean.
  • the air purifier 430 shown in FIG. 9 can completely remove the smoke of the tobacco and returns the air to the room.
  • a chamber filled with a carbon nanohorn aggregate may be used instead of the carbon nanohorn molded body used in the above embodiment.
  • the nicotine removal filter 206 in Fig. 7 may have a configuration in which a carbon nanohorn aggregate is filled in a container.
  • the nicotine removal filter 304 in FIG. 8 may have a configuration in which a chamber defined by the fibrous filters 302 and 306 and the paper wrapper is filled with a carbon nanohorn aggregate.
  • a filter for removing nicotine can be used other than the force tobacco described in the case of the filter for tobacco.
  • a system that purifies indoor air can be constructed by fitting an air purifying filter containing carbon nanohorns into the partition that separates the smoking room.
  • the air purifying member according to the present invention can be applied to the ventilation part of the mask. That is, a main body is formed by laminating a plurality of cloth bodies, and a main body is formed on a mask formed by installing rubber strings for holding on both side edges of the main body. It is possible to adopt a configuration in which carbon nanohorns are mixed in the constituent fabric. By using such a mask, it is possible to suppress not only invasion of dust and pollen but also oral invasion of nicotine and the like.
  • tobacco smoke filter using a carbon-based material as a cleaning agent evaluation of a tobacco smoke filter using a carbon-based material as a cleaning agent was performed. Tobacco smoke was generated using the device shown in Fig. 11, and the trapping performance of the components was measured.
  • tobacco leaves 502 are arranged in an annular furnace 503. The amount of tobacco leaf 502 is about 20 mg.
  • a heater 501 is provided around the annular furnace 503, so that the tobacco leaves 502 can be burned in a stream of clean air.
  • the smoke component generated from the tobacco leaf 502 is led to the sampling tube 506.
  • the sampling tube 506 is filled with filter material 504 and quartz wool 505.
  • tobacco smoke components were collected on a filter. It was repeated three times to increase the amount collected.
  • the filling length L of the sample in the sampling tube was about 5 mm.
  • the collected gas volume was about 7.5L.
  • carbon nanohorn Form of carbon nanohorn: carbon nanohorn (Dahlia type, etc.)
  • Example 2 In the same manner as in Example 1, an evaluation of a tobacco smoke filter using a carbon-based material as a cleaning agent was performed. Each sample was filled into a volume of 4 mm ⁇ X 5 mm L to collect tobacco smoke. The lower limit of quantification for this test is 100 / zg / g.
  • Figure 13 shows the test results for the amount of nicotine adsorbed together with the evaluated materials. It was revealed that the nicotine adsorption amount of the carbon nanohorn was remarkably large. Although the value is generally larger than that of Example 1, it is considered that this is due to the size of the adsorption time.
  • Example 2 The same test as in Example 2 was performed using carbon nanotubes. At the same amount of sample, lmg, the amount of adsorption showed a large repeated measurement error and was lower than that of the carbon nanohorn, and was approximately 1900 g / g).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nanotechnology (AREA)
  • Organic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Filtering Materials (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

L'invention concerne un filtre (400) qui comprend une structure dans laquelle un filtre de désodorisation (408), un filtre suppresseur de nicotine (406), un préfiltre (404) et un cadre de montage (402) sont empilés de manière séquentielle dans cet ordre sur un corps principal (415) et fixés l'un à l'autre par un élément de fixation (401). Ce filtre suppresseur de nicotine (406) est un corps du type feuille composé de nanocornets.
PCT/JP2004/013356 2003-09-19 2004-09-14 Element purificateur d'air et filtre utilisant un nanocornet WO2005028100A1 (fr)

Priority Applications (1)

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JP2005514032A JP4618128B2 (ja) 2003-09-19 2004-09-14 カーボンナノホーンを用いたフィルタ

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JP2009076314A (ja) * 2007-09-20 2009-04-09 Nec Corp 電界放出発光素子
WO2013058382A1 (fr) 2011-10-19 2013-04-25 株式会社環境・エネルギーナノ技術研究所 Matériau dense comprenant des nanocornets de carbone et son utilisation
WO2013058383A1 (fr) 2011-10-19 2013-04-25 株式会社環境・エネルギーナノ技術研究所 Matériau poreux comprenant des nanocornets de carbone et son utilisation

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JP2002326032A (ja) * 2001-01-29 2002-11-12 Japan Science & Technology Corp カーボンナノホーン吸着材とその製造方法
US20030000538A1 (en) * 2000-11-10 2003-01-02 Bereman Robert D. Method and product for removing carcinogens from tobacco smoke
JP2003206113A (ja) * 2002-01-08 2003-07-22 Japan Science & Technology Corp カーボンナノチューブ・カーボンナノホーン複合体とその製造方法
JP2004189570A (ja) * 2002-12-13 2004-07-08 Jfe Engineering Kk カーボンナノチューブ集合体およびこれを設置したカーボンナノチューブ設置装置

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JP2002159851A (ja) * 2000-11-24 2002-06-04 Japan Science & Technology Corp 単層カーボンナノホーンからなる吸着材、触媒および触媒担体
JP2002326032A (ja) * 2001-01-29 2002-11-12 Japan Science & Technology Corp カーボンナノホーン吸着材とその製造方法
JP2003206113A (ja) * 2002-01-08 2003-07-22 Japan Science & Technology Corp カーボンナノチューブ・カーボンナノホーン複合体とその製造方法
JP2004189570A (ja) * 2002-12-13 2004-07-08 Jfe Engineering Kk カーボンナノチューブ集合体およびこれを設置したカーボンナノチューブ設置装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009076314A (ja) * 2007-09-20 2009-04-09 Nec Corp 電界放出発光素子
WO2013058382A1 (fr) 2011-10-19 2013-04-25 株式会社環境・エネルギーナノ技術研究所 Matériau dense comprenant des nanocornets de carbone et son utilisation
WO2013058383A1 (fr) 2011-10-19 2013-04-25 株式会社環境・エネルギーナノ技術研究所 Matériau poreux comprenant des nanocornets de carbone et son utilisation

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