CN106608621A - Preparation method for marigold stalk active carbon - Google Patents
Preparation method for marigold stalk active carbon Download PDFInfo
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- CN106608621A CN106608621A CN201510680442.XA CN201510680442A CN106608621A CN 106608621 A CN106608621 A CN 106608621A CN 201510680442 A CN201510680442 A CN 201510680442A CN 106608621 A CN106608621 A CN 106608621A
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- flos tagetis
- tagetis erectae
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Abstract
The invention relates to a marigold stalk active carbon and a preparation method thereof. According to the invention, cheap and widely available marigold stalk is used as a raw material, and phosphoric acid with low pollution degree and production cost is used as an activating agent, so the marigold stalk active carbon is successfully prepared. The preparation method is easy to operate, good in feasibility, economic and environment friendly, and can improve the utilization value of marigold and overcome the problem of pollution of waste marigold stalk to environment; and the prepared marigold stalk active carbon has excellent adsorption performance and good industrial application prospects.
Description
Technical field
The present invention relates to a kind of activated carbon and preparation method thereof, more particularly to a kind of Flos Tagetis Erectae straw-stem active charcoal and preparation method thereof
Background technology
Activated carbon is the hydrophobic material that organic biomass such as coal, oil, timber, straw, shell etc. are obtained through carbonization and activation, with special
Microstructure, huge specific surface area and prosperity pore structure, be a kind of adsorbing material of function admirable.For in theory, carbon element content
High material can be used as the raw material for preparing activated carbon, and widely used is mineral substance and plant material.Plant raw material refers to timber system
Product, agricultural crop straw, shell, bamboo wood etc..These raw materials have natural pore structure, and in activation process, activator is easily by these holes
Material internal is entered into, priming reaction is carried out at relatively mild temperature, can be obtained that specific surface area is big, hole is flourishing, mechanical strength good
Activated carbon.
In recent years, it is more and more for the research of agriculture and forestry by-product, wherein, activated carbon is prepared as which is with low cost, source wide using stalk
It is general, renewable, and reproduction speed is fast and similar to wood structure, there is natural pore structure, therefore use it for preparing activated carbon and be subjected to
Everybody favor.Meanwhile, there is plantation Flos Tagetis Erectae China various places, have defined the production of Flos Tagetis Erectae industrial scale, remaining stalk resource after processing
Abundant, major part is caused serious pollution, or chopping and returning by direct on-site incineration to environment, and straw resource utilization rate is low, is not rised in value
Change and utilize.For the situation of this wasting of resources, this patent is initiated by the use of Flos Tagetis Erectae as raw material to prepare the activated carbon of excellent performance, is both reduced
Production cost, protects the environment to have saved resource again.
The common technique for preparing activated carbon is divided into two stages：Carbonization and activation, wherein, activation stage has the impact of key to the performance of activated carbon.
In the preparation of activated carbon, H3PO4Due to very strong water absorption, using frequently as activator, the effect of dehydration has been primarily served.Especially
During using plant resource as the raw material of activated carbon is prepared, H3PO4The ether bond rupture being connected between lignin and cellulose can be made so that former
Hydrogen and oxygen in material is discharged as water vapor, suppresses the generation of the Organic substances such as tar.Additionally, phosphoric acid is used as the conventional work for preparing activated carbon
Agent, also with pollution level is light and the features such as low production cost, and a small amount of phosphoric acid topdresses to crops and facilitating effectss, does not result in ring
Pollute in border.
The content of the invention
With Flos Tagetis Erectae straw as raw material, phosphoric acid is that activator prepares the big activated carbon of demand to the present invention, both economized on resources, and solved environmental pollution
Problem, meets the demand of industrial industrialization development again.Its concrete preparation technology flow process is as follows：
(1) the stem stalk part of Flos Tagetis Erectae straw is chosen, powder is milled into, the powder by 40～60 mesh aperture sieves is taken, is dried to over dry.
(2) from the phosphoric acid that concentration is 50% as activator, after dried stalk powder is mixed by certain acid charcoal ratio with phosphoric acid activation agent,
It is placed under room temperature condition and impregnates 16h.
(3) mixed sample is put into into pre- 2～3h of carbonization in electric furnace, temperature is 200 DEG C.
(4), after the sample after pre- carbonization is cooled to room temperature, certain hour is activated under uniform temperature in being placed on Muffle furnace, further take out and be placed in
In exsiccator, room temperature is cooled to, that is, Flos Tagetis Erectae straw-stem active charcoal is obtained.
In step (4), the sour charcoal ratio of phosphoric acid and activated carbon is 2: 1, and soak time is 120min, and activation temperature is 400 DEG C.
In step (4), obtained Flos Tagetis Erectae straw-stem active charcoal iodine sorption value is more than 1000mg/g, and BET specific surface area is 1200m2/ g with
On, pore structure is based on micropore.
Compared with prior art, the present invention has advantages below：
1st, Flos Tagetis Erectae straw as preparing raw material is cheap, wide material sources, and content of lignin is higher, is the good raw material for preparing activated carbon,
The Flos Tagetis Erectae straw-stem active charcoal prepared simultaneously also has good absorption property.
2nd, during in the preparation of activated carbon, using phosphoric acid as activator, with pollution level is light and the features such as low production cost, and lack
The phosphoric acid of amount topdresses to crops and facilitating effectss, does not result in environmental pollution.
3rd, the preparation technology is simple to operate, feasibility is strong, economic and environment-friendly, is the effective way developed a circular economy with rural economic construction, and has
There is wide industrialization production application prospect
Specific embodiment
With reference to example is embodied as, the present invention is described in detail：
Embodiment 1
Flos Tagetis Erectae straw chooses stem stalk part, is milled into powder, takes the powder by 40～60 mesh aperture sieves, is dried to over dry；From phosphoric acid
(H3PO4) used as activator, concentration is 50%；Dried stalk powder is mixed by certain acid charcoal ratio with phosphoric acid activation agent, room temperature bar is placed in
16h is impregnated under part, be put into pre- 2～3h of carbonization in electric furnace, temperature is 200 DEG C, takes out, is cooled to room temperature, be placed in Muffle furnace in a constant temperature
The lower activation certain hour of degree, taking-up are placed in exsiccator, are cooled to room temperature.When sour carbon ratio is 2: 1, soak time is 120min, and activation temperature is
When 400 DEG C, the iodine sorption value of obtained activated carbon is 1145.38mg/g, and BET specific surface area is 1344.225m2/ g, HK adsorb total pore volume
0.72cm3/ g, average pore size are 0.59nm.
Embodiment 2
Flos Tagetis Erectae straw chooses stem stalk part, is milled into powder, takes the powder by 40～60 mesh aperture sieves, is dried to over dry；From phosphoric acid
(H3PO4) used as activator, concentration is 50%；Dried stalk powder is mixed by certain acid charcoal ratio with phosphoric acid activation agent, room temperature bar is placed in
16h is impregnated under part, be put into pre- 2～3h of carbonization in electric furnace, temperature is 200 DEG C, takes out, is cooled to room temperature, be placed in Muffle furnace in a constant temperature
The lower activation certain hour of degree, taking-up are placed in exsiccator, are cooled to room temperature.When sour carbon ratio is 3: 1, soak time is 120min, and activation temperature is
When 500 DEG C, the iodine sorption value of obtained activated carbon is 973.02mg/g, and BET specific surface area is 1167.34m2/ g, and be microporous activated carbon.
Claims (4)
1. a kind of preparation method of Flos Tagetis Erectae straw-stem active charcoal, it is characterised in that：Flos Tagetis Erectae straw chooses stem stalk part, is milled into powder, takes
By the powder of 40～60 mesh aperture sieves, it is dried to over dry；From phosphoric acid (H3PO4) used as activator, concentration is 50%；By dried straw
Stalk powder is mixed by certain acid charcoal ratio with phosphoric acid activation agent, is placed under room temperature condition and is impregnated 16h, is put into pre- 2～3h of carbonization in electric furnace, and temperature is
200 DEG C, take out, be cooled to room temperature；Activate certain hour in being placed on Muffle furnace at a certain temperature, taking-up is placed in exsiccator, is cooled to
Room temperature, that is, be obtained Flos Tagetis Erectae straw-stem active charcoal.
2. the preparation method of Flos Tagetis Erectae straw-stem active charcoal according to claim 1, it is characterised in that：As in the Flos Tagetis Erectae straw of raw material half
The content of cellulose is more than 20%, and content of lignin is more than 30%.
3. the preparation method of Flos Tagetis Erectae straw-stem active charcoal according to claim 1, it is characterised in that：Sour charcoal ratio during activation is 2: 1, activation
Time is 120min, and activation temperature is 400 DEG C.
4. the preparation method of Flos Tagetis Erectae straw-stem active charcoal according to claim 1, it is characterised in that：Obtained Flos Tagetis Erectae straw-stem active charcoal iodine
Adsorptive value is more than 1000mg/g, and BET specific surface area is 1200m2/ more than g, pore structure is based on micropore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510680442.XA CN106608621A (en) | 2015-10-20 | 2015-10-20 | Preparation method for marigold stalk active carbon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510680442.XA CN106608621A (en) | 2015-10-20 | 2015-10-20 | Preparation method for marigold stalk active carbon |
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| CN106608621A true CN106608621A (en) | 2017-05-03 |
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| CN201510680442.XA Pending CN106608621A (en) | 2015-10-20 | 2015-10-20 | Preparation method for marigold stalk active carbon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232977A (en) * | 2020-03-23 | 2020-06-05 | 南京卡佛科学仪器有限公司 | Preparation method and application of phosphoric acid activated straw activated carbon |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754869A (en) * | 2014-01-02 | 2014-04-30 | 上海大学 | Method for preparing high-quality active carbon by adopting waste polyurethane foamed plastic |
-
2015
- 2015-10-20 CN CN201510680442.XA patent/CN106608621A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754869A (en) * | 2014-01-02 | 2014-04-30 | 上海大学 | Method for preparing high-quality active carbon by adopting waste polyurethane foamed plastic |
Non-Patent Citations (1)
| Title |
|---|
| 秦冲等: "万寿菊秸秆活性炭的制备及表征", 《林产工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232977A (en) * | 2020-03-23 | 2020-06-05 | 南京卡佛科学仪器有限公司 | Preparation method and application of phosphoric acid activated straw activated carbon |
| CN111232977B (en) * | 2020-03-23 | 2021-04-20 | 南京卡佛科学仪器有限公司 | Preparation method and application of phosphoric acid activated straw activated carbon |
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Application publication date: 20170503 |
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