CN109174004A - A kind of active carbon that improves is to the method and application of essence sustained release performance - Google Patents
A kind of active carbon that improves is to the method and application of essence sustained release performance Download PDFInfo
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- CN109174004A CN109174004A CN201811308307.2A CN201811308307A CN109174004A CN 109174004 A CN109174004 A CN 109174004A CN 201811308307 A CN201811308307 A CN 201811308307A CN 109174004 A CN109174004 A CN 109174004A
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- 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
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
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- 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
- A24D3/02—Manufacture of tobacco smoke filters
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- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
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- Carbon And Carbon Compounds (AREA)
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Abstract
The invention discloses a kind of raising active carbons to the method and application of essence sustained release performance.Active carbon is first acidified by the present invention, make the acidic-groups such as the hydroxyl, carboxyl in its surface, then Water-soluble carbon quantum dot, souring activity charcoal are mixed with liquid essence, since carbon quantum dot surface water soluble group abundant improves active carbon dispersibility in liquid essence, the type and essence that increase adsorption site enter the penetration of active carbon, convenient for absorption；The specific surface area of active carbon and hole, which hold, in desorption, after acidification increases, thus freeing that rate also relative increase, and the quantization of activated carbon surface neither influences absorption of the active carbon to essence, and weakening activated carbon surface improves slow-release capability to the absorption binding force of essence.Using the modified activated carbon absorption essence of this method preparation in cigarette filter, when temperature is 45-65 DEG C, fragrance can be stablized, uniformly discharge, and have preferable slow release effect.
Description
Technical field
The invention belongs to be sustained essence preparing technical field, and in particular to a kind of raising active carbon is to essence sustained release performance
Method and application.
Background technique
The fragrance fragrance of cigarette and during burning and sucking the release of fragrance be assess cigarette quality a key factor,
Fragrance directly affects smell and the sense of taste of the consumer to cigarette.Flavors and fragrances is added in cigarette, its role is to improve cigarette
Physicochemical property, mellow and full fragrance, modification fragrance, improve inhale taste and establish product style.In numerous flavoring technologies, filter
The method of mouth addition adsorbent makes full use of since the controllability of fragrance storage and release may be implemented in it and guarantees that fragrance is pure
Fragrance etc. advantage causes the concern of researcher.Wherein, adsorbent material is the key that filter tip addition adsorbent flavoring technology,
It directly affects the utilization rate and perfuming effect of fragrance during flavoring.
Active carbon is widely used in adsorbing, separating etc. since it has pore structure abundant and huge specific surface area
The absorption property of numerous areas, active carbon is codetermined by its surface pore structure and surface chemical property.Wherein surface chemistry
Property is mainly determined that oxygen-containing functional group is divided into acidic-group and basic group again by oxygen-containing functional group and nitrogen-containing functional group, wherein
Acidic-group includes carboxyl, and phenolic hydroxyl group, lactone group etc., they can be reacted with Lewis alkali.So activity can be adjusted by modified
The surface acidic-basic property of charcoal, and then adjust the absorption property to adsorbate.Patent of invention (201410843396.6) discloses hydrochloric acid
Modified activated carbon prepare tobacco aromaticss sustained release or controlled release in terms of application, although suction of the active carbon crossed through HCl treatment to essence
Attached rate increases, but there is also poor reproducibility, especially be desorbed slow release effect difference problem.
Carbon quantum dot refers to that a kind of partial size is less than 10nm, the novel fluorescence carbon with graphite crystal form or diamond-like is received
Rice material, is the spherical nano particle of monodisperse for containing a large amount of oxygen-containing groups as basic framework, surface using carbon.Carbon quantum dot master
To include two types: one kind is with sp2Or with sp3The carbon of hydridization is core, and edge is connected with-OH, C-O-C ,-COOH or-NH2
Equal groups, have apparent lattice；Another kind is amorphous carbon, without apparent lattice structure.Carbon quantum dot itself has low
The properties such as toxicity, biocompatibility, good water solubility and excellent stability.
Summary of the invention
In view of the deficiencies of the prior art, inventor, by being acidified to active carbon, makes its surface band by further investigation discovery
The acidic-groups such as hydroxyl, carboxyl, then introduced by Water-soluble carbon quantum dot, active carbon dispersibility in liquid essence is improved, is increased
The type of adsorption site and essence has been added to enter the penetration of active carbon, convenient for absorption；And in desorption, active carbon after acidification
Specific surface area and hole, which hold, to be increased, thus freeing that also relative increase, the quantization of activated carbon surface neither influence active carbon to perfume (or spice) to rate
The absorption of essence, and weaken activated carbon surface to the absorption binding force of essence, improve slow-release capability.
An aspect of of the present present invention provides a kind of raising active carbon to the method for essence sustained release performance, comprising the following steps:
(1) carbon quantum dot is prepared；
(2) souring activity charcoal；
(3) liquid essence is prepared；
(4) by the liquid of the souring activity charcoal of step (2) preparation, the carbon quantum dot of step (1) preparation and step (3) preparation
Essence mixing, separation absorption essence active carbon, dries, obtains the active carbon of absorption essence.
Preferably, the method for step (1) the preparation carbon quantum dot includes: to take 0.2-0.5g urea phosphate, 0.3-0.6g lemon
Lemon acid and 0.8-1.0mL ethylenediamine dissolve in 25-50mL deionized water；Then by above-mentioned solution be placed in microwave dissolver into
Row reaction obtains clear transparent solutions, is centrifuged, and takes supernatant, obtains carbon quantum dot after dry.
Preferably, reaction condition in microwave dissolver in the step (1) are as follows: reaction temperature is warming up to 150 in 1min
DEG C, keep this temperature-resistant reaction 30min.
Preferably, drying temperature is 60 DEG C in the step (1), drying time 12-24h.
Preferably, the method for step (2) souring activity charcoal includes: to take active carbon, in 0.1mol/L HCl or HNO3 solution
12-20h is shaken in water-bath to middle immersion 2h postposition at room temperature, and distilled water flushing to activated carbon surface is neutrality, is filtered, 100
Dry 3-6h is at DEG C to get souring activity charcoal.
Preferably, active carbon and HCl or HNO in the step (2)3Solution weight volume ratio is 1:3-5.
Preferably, the method that step (3) prepares liquid essence includes: that menthol or vanillic aldehyde are dissolved in dehydrated alcohol,
W/v is 1:3-5.
Preferably, it is respectively cleaned with 75% ethyl alcohol, distilled water respectively after separation absorption essence active carbon in the step (4)
3-5 times is neutral to solid.
Preferably, souring activity charcoal described in step (4), carbon quantum dot, liquid essence w/v are 1:0.03-
0.05:3-5。
Preferably, it the described method comprises the following steps:
(1) it prepares carbon quantum dot: taking 0.2-0.5g urea phosphate, 0.3-0.6g citric acid and 0.8-1.0mL ethylenediamine in 25-
It is dissolved in 50mL deionized water.Then above-mentioned solution is transferred in micro-wave diminishing pot, is sealed and placed in microwave dissolver.Journey
Sequence heating setting are as follows: reaction temperature is warming up to 150 DEG C in 1min, keeps this temperature-resistant reaction 30min.It is cooled to room temperature
Afterwards, the clear transparent solutions obtained are centrifuged 15min, supernatant dry 12-24h in 60 DEG C of vacuum ovens in 10000rpm,
To obtain the final product.
(2) souring activity charcoal: taking active carbon, in 0.1mol/L HCl or HNO32h postposition water at room temperature is impregnated in solution
Bath concussion 12-20h, distilled water flushing to activated carbon surface is neutrality, is filtered, at 100 DEG C dry 3-6h to get.
(3) it prepares liquid essence: menthol or vanillic aldehyde is dissolved in absolute alcohol, w/v 1:3-5.
(4) by the liquid of the souring activity charcoal of step (2) preparation, the carbon quantum dot of step (1) preparation and step (3) preparation
Essence mixing, is placed in 20-24h in shaking table, and separation absorption essence active carbon is respectively cleaned 3-5 times with 75% ethyl alcohol, distilled water respectively
It is neutrality to solid, naturally dry is to get the active carbon for arriving absorption essence.
Another aspect provides the method for essence sustained release performance is prepared by the raising active carbon
Adsorb the active carbon of essence.
Another aspect provides application of the active carbon of the absorption essence in cigarette preparation.
Preferably, the activated carbon application of the absorption essence of preparation is subjected to sensory evaluation and release in cigarette filter
Its sustained release performance is evaluated in the measurement of rate.
The present invention has following remarkable advantage:
1, active carbon is acidified, makes the acidic-groups such as the hydroxyl, carboxyl in its surface, first is that enhancing surface polarity, from
And enhance active carbon to the affinity of polar substances；Two there is provided the surface bases that can be carried out carbon quantum dot and be further modified
Group.
2, the active carbon after being acidified is mixed with carbon quantum dot, first is that improving dispersibility of the active carbon in essence；Second is that
The active group that chemical bond can be formed with essence is provided, modified activated carbon alkalinity is weakened, micropore is reduced, mesoporous development, greatly
Hole is basically unchanged, and increases adsorption capacity and desorption ability.
3, it is used in cigarette filter using the absorption essence active carbon of this method preparation, it is fragrant when temperature is 45-65 DEG C
Gas can be stablized, uniformly discharge, and have preferable slow release effect.
Specific embodiment
The present invention is further described below with reference to embodiment, but the scope of protection of the present invention is not limited thereto.
Embodiment 1
(1) it prepares carbon quantum dot: taking 0.2g urea phosphate, 0.3g citric acid and 0.8mL ethylenediamine in 25mL deionized water
Dissolution.Then above-mentioned solution is transferred in micro-wave diminishing pot, is sealed and placed in microwave dissolver.Temperature programming setting are as follows:
Reaction temperature is warming up to 150 DEG C in 1min, keeps this temperature-resistant reaction 30min.After being cooled to room temperature, obtained clarification
Clear solution is centrifuged 15min in 10000rpm, supernatant in 60 DEG C of vacuum ovens dry 12h to get.
(2) souring activity charcoal: taking active carbon 100g, and 2h is impregnated in 300mL 0.1mol/L HCl solution and is placed on room temperature
12h is shaken in lower water-bath, and distilled water flushing to activated carbon surface is neutrality, is filtered, at 100 DEG C dry 3h to get.
(3) it prepares liquid essence: 10g menthol is dissolved in 30mL dehydrated alcohol.
(4) the carbon quantum dot 0.3g and step (3) system of the souring activity charcoal 10g, step (1) preparation that take step (2) to prepare
Standby liquid essence 30mL mixing is placed in 20h in shaking table, centrifuge separation absorption essence active carbon, respectively with 75% ethyl alcohol, distillation
It is neutrality that water, which respectively cleans 3 times to solid, and naturally dry is to get the active carbon for arriving absorption essence.
Embodiment 2
(1) it prepares carbon quantum dot: taking 0.5g urea phosphate, 0.6g citric acid and 0.9mL ethylenediamine in 50mL deionized water
Dissolution.Then above-mentioned solution is transferred in micro-wave diminishing pot, is sealed and placed in microwave dissolver.Temperature programming setting are as follows:
Reaction temperature is warming up to 150 DEG C in 1min, keeps this temperature-resistant reaction 30min.After being cooled to room temperature, obtained clarification
Clear solution is centrifuged 15min in 10000rpm, supernatant in 60 DEG C of vacuum ovens it is dry for 24 hours to get.
(2) souring activity charcoal: taking active carbon 100g, in 400mL 0.1mol/L HNO32h is impregnated in solution is placed on room
20h is shaken in the lower water-bath of temperature, and distilled water flushing to activated carbon surface is neutrality, is filtered, at 100 DEG C dry 5h to get.
(3) it prepares liquid essence: 10g menthol is dissolved in 50mL dehydrated alcohol.
(4) the carbon quantum dot 0.5g and step (3) system of the souring activity charcoal 10g, step (1) preparation that take step (2) to prepare
Standby liquid essence 50mL mixing, is placed in shaking table for 24 hours, centrifuge separation absorption essence active carbon, respectively with 75% ethyl alcohol, distillation
It is neutrality that water, which respectively cleans 5 times to solid, and naturally dry is to get the active carbon for arriving absorption essence.
Embodiment 3
(1) it prepares carbon quantum dot: taking 0.4g urea phosphate, 0.5g citric acid and 1.0mL ethylenediamine in 40mL deionized water
Dissolution.Then above-mentioned solution is transferred in micro-wave diminishing pot, is sealed and placed in microwave dissolver.Temperature programming setting are as follows:
Reaction temperature is warming up to 150 DEG C in 1min, keeps this temperature-resistant reaction 30min.After being cooled to room temperature, obtained clarification
Clear solution is centrifuged 15min in 10000rpm, supernatant in 60 DEG C of vacuum ovens dry 20h to get.
(2) souring activity charcoal: taking active carbon 100g, in 500mL 0.1mol/L HNO32h is impregnated in solution is placed on room
15h is shaken in the lower water-bath of temperature, and distilled water flushing to activated carbon surface is neutrality, is filtered, at 100 DEG C dry 6h to get.
(3) it prepares liquid essence: 10g vanillic aldehyde is dissolved in 40mL dehydrated alcohol.
(4) the carbon quantum dot 0.4g and step (3) system of the souring activity charcoal 10g, step (1) preparation that take step (2) to prepare
Standby liquid essence 40mL mixing, is placed in shaking table for 24 hours, centrifuge separation absorption essence active carbon, respectively with 75% ethyl alcohol, distillation
It is neutrality that water, which respectively cleans 4 times to solid, and naturally dry is to get the active carbon for arriving absorption essence.
Embodiment 4
(1) carbon quantum dot is prepared: with 1 step of embodiment (1)；
(2) souring activity charcoal takes active carbon 100g, and 2h is impregnated in the 500mL 0.1mol/L HCl solution and is placed on room
20h is shaken in the lower water-bath of temperature, and distilled water flushing to activated carbon surface is neutrality, is filtered, at 100 DEG C dry 6h to get.
(3) it prepares liquid essence: 10g vanillic aldehyde is dissolved in 50mL dehydrated alcohol.
(4) the carbon quantum dot 0.3g and step (3) system of the souring activity charcoal 10g, step (1) preparation that take step (2) to prepare
Standby liquid essence 30mL mixing is placed in 20h in shaking table, centrifuge separation absorption essence active carbon, respectively with 75% ethyl alcohol, distillation
It is neutrality that water, which respectively cleans 5 times to solid, and naturally dry is to get the active carbon for arriving absorption essence.
5 sensory evaluation of embodiment
The hydrochloric Acid Modification active carbon that method disclosed in normal activated carbon, 2014108433986.6 is prepared and implementation
The active carbon (sour modified activated carbon+carbon quantum dot) that example 1 obtains, which adsorbs to be added in cigarette filter after menthol respectively, to be felt
Official's quality evaluation, the results are shown in Table 1.
Sensory evaluation of the various activated carbon applications of table 1 in cigarette filter
6 burst size of embodiment and release rate assay
The active carbon of the obtained absorption essence of embodiment 1-4 is subjected to burst size and release rate assay (the results are shown in Table 2)
(1) computer experiment: the active carbon for having loaded the absorption essence of 10mg embodiment 1-4 preparation in filter tip respectively is taken
Sample cigarette, is put into smoking machine and is carried out burning and sucking experiment according to standard method by each 5.
(2) burst size: taking out the filter disc of trap, is put into concussion extraction 30min in the steamed bun bottle equipped with 50mL extractant,
Then sampling carries out gas chromatographic analysis, can calculate containing for menthol in total particulate matter in mainstream smoke or vanillic aldehyde according to result
Amount, i.e., material is in main flume to the burst size of menthol or vanillic aldehyde.
(3) release rate: the specimen material (material that sample cigarette adds when preparing) in remaining cigarette butt is taken out, 50mL is added
Concussion extraction 30min, sampling carry out gas chromatographic analysis, as a result obtain the suction of menthol or vanillic aldehyde in the steamed bun bottle of extractant
Attached dose of residual content, to calculate release rate %.
Release rate %=(additive amount-adsorbent residual content) (mg)/additive amount (mg)
2 different activities charcoal of table applies the release rate of menthol or vanillic aldehyde in cigarette
By that can calculate in table, modified activated carbon is very high to the release rate of essence, all 85% or more, the essence of material release
It is mainly retained by filter tip, the essence content of retention accounts for 30% of total content or so.The burst size of state's inner wrap strip menthol at present
Standard is 0.02-0.06mg/cig, and the burst size of external cigarette menthol is 0.06-0.6mg/cig.The result that the present invention tests
Show that modified active Carbon Materials can achieve the level of international cigarette to the burst size of menthol or vanillic aldehyde.
Claims (12)
1. a kind of active carbon that improves is to the method for essence sustained release performance, which is characterized in that the described method comprises the following steps:
(1) carbon quantum dot is prepared；
(2) souring activity charcoal；
(3) liquid essence is prepared；
(4) by the liquid essence of the souring activity charcoal of step (2) preparation, the carbon quantum dot of step (1) preparation and step (3) preparation
Mixing, separation absorption essence active carbon, dries, obtains the active carbon of absorption essence.
2. the method according to claim 1, wherein the method for the step (1) preparation carbon quantum dot includes: to take
0.2-0.5g urea phosphate, 0.3-0.6g citric acid and 0.8-1.0mL ethylenediamine dissolve in 25-50mL deionized water；Then will
Above-mentioned solution, which is placed in microwave dissolver, is reacted to obtain clear transparent solutions, centrifugation, is taken supernatant, is obtained carbon amounts after dry
Sub- point.
3. according to the method described in claim 2, it is characterized in that, reaction condition in the microwave dissolver are as follows: reaction temperature
It is warming up to 150 DEG C in 1min, keeps this temperature-resistant reaction 30min.
4. according to the method described in claim 3, it is characterized in that, the drying temperature be 60 DEG C, drying time 12-24h.
5. the method according to claim 1, wherein the method for step (2) souring activity charcoal includes: to take activity
Charcoal, in 0.1mol/L HCl or HNO32h postposition is impregnated in solution, and 12-20h, distilled water flushing to work are shaken in water-bath at room temperature
Property carbon surface be neutrality, filtered, dry 3-6h is at 100 DEG C to get souring activity charcoal.
6. according to the method described in claim 5, it is characterized in that, the active carbon and HCl or HNO3Solution weight volume ratio is
1:3-5。
7. the method according to claim 1, wherein the method that step (3) prepares liquid essence includes: by peppermint
Alcohol or vanillic aldehyde are dissolved in dehydrated alcohol, w/v 1:3-5.
8. the method according to claim 1, wherein dividing after separation absorption essence active carbon in the step (4)
It is neutral for not cleaning 3-5 times respectively to solid with 75% ethyl alcohol, distilled water.
9. according to the method described in claim 8, it is characterized in that, souring activity charcoal described in step (4), carbon quantum dot,
Liquid essence w/v is 1:0.03-0.05:3-5.
10. the method according to claim 1, wherein the following steps are included:
(1) it prepares carbon quantum dot: taking 0.2-0.5g urea phosphate, 0.3-0.6g citric acid and 0.8-1.0mL ethylenediamine in 25-50mL
It is dissolved in deionized water；Then above-mentioned solution is transferred in micro-wave diminishing pot, is sealed and placed in microwave dissolver；Program liter
Temperature setting are as follows: reaction temperature is warming up to 150 DEG C in 1min, keeps this temperature-resistant reaction 30min；After being cooled to room temperature,
Obtained clear transparent solutions are centrifuged 15min, supernatant dry 12-24h in 60 DEG C of vacuum ovens in 10000rpm, i.e.,
?；
(2) souring activity charcoal: taking active carbon, in 0.1mol/L HCl or HNO32h postposition is impregnated in solution, and water-bath is shaken at room temperature
Swing 12-20h, distilled water flushing to activated carbon surface is neutrality, filtered, at 100 DEG C dry 3-6h to get；
(3) it prepares liquid essence: menthol or vanillic aldehyde is dissolved in absolute alcohol, w/v 1:3-5；
(4) by the liquid essence of the souring activity charcoal of step (2) preparation, the carbon quantum dot of step (1) preparation and step (3) preparation
Mixing, is placed in 20-24h in shaking table, and separation absorption essence active carbon respectively cleans 3-5 times to admittedly with 75% ethyl alcohol, distilled water respectively
Body is neutrality, and naturally dry is to get the active carbon for arriving absorption essence.
11. a kind of active carbon for the absorption essence that -10 any the methods according to claim 1 are prepared.
12. application of the active carbon of absorption essence according to claim 11 in cigarette preparation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110524644A (en) * | 2019-09-09 | 2019-12-03 | 重庆市帅之盾门业有限公司 | A kind of stalk imitates solid wood composite board and preparation method thereof |
| CN113229521A (en) * | 2021-06-23 | 2021-08-10 | 张家港外星人新材料科技有限公司 | Electronic atomized liquid composition and packaging container thereof |
| CN113841922A (en) * | 2021-10-09 | 2021-12-28 | 湖北中烟工业有限责任公司 | Preparation method and application of compound-flavor essence spice for cigarettes |
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| CN104687245A (en) * | 2014-12-30 | 2015-06-10 | 广东中烟工业有限责任公司 | Application of hydrochloric acid modified activated carbon in preparation of sustained-release or controlled-release material for tobacco flavor |
| CN105477647A (en) * | 2015-12-02 | 2016-04-13 | 常州大学 | Graphene quantum dot/chitosan xerogel preparation and application of graphene quantum dot/chitosan xerogel to fluorescent imaging and drug sustained release |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101884620A (en) * | 2010-05-28 | 2010-11-17 | 同济大学 | Activated carbon granule of load quantum dots as well as preparation method and application thereof |
| CN104687245A (en) * | 2014-12-30 | 2015-06-10 | 广东中烟工业有限责任公司 | Application of hydrochloric acid modified activated carbon in preparation of sustained-release or controlled-release material for tobacco flavor |
| CN105477647A (en) * | 2015-12-02 | 2016-04-13 | 常州大学 | Graphene quantum dot/chitosan xerogel preparation and application of graphene quantum dot/chitosan xerogel to fluorescent imaging and drug sustained release |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524644A (en) * | 2019-09-09 | 2019-12-03 | 重庆市帅之盾门业有限公司 | A kind of stalk imitates solid wood composite board and preparation method thereof |
| CN113229521A (en) * | 2021-06-23 | 2021-08-10 | 张家港外星人新材料科技有限公司 | Electronic atomized liquid composition and packaging container thereof |
| CN113841922A (en) * | 2021-10-09 | 2021-12-28 | 湖北中烟工业有限责任公司 | Preparation method and application of compound-flavor essence spice for cigarettes |
| CN113841922B (en) * | 2021-10-09 | 2023-03-10 | 湖北中烟工业有限责任公司 | Preparation method and application of compound-flavor essence spice for cigarettes |
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