CN116282011A - Preparation method of wet-process phosphoric acid activated carbon with ultrahigh mesoporous volume - Google Patents
Preparation method of wet-process phosphoric acid activated carbon with ultrahigh mesoporous volume Download PDFInfo
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- CN116282011A CN116282011A CN202310370534.2A CN202310370534A CN116282011A CN 116282011 A CN116282011 A CN 116282011A CN 202310370534 A CN202310370534 A CN 202310370534A CN 116282011 A CN116282011 A CN 116282011A
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 150
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000002023 wood Substances 0.000 claims abstract description 54
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 38
- 230000003213 activating effect Effects 0.000 claims abstract description 26
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000001099 ammonium carbonate Substances 0.000 claims abstract description 18
- 235000012501 ammonium carbonate Nutrition 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 14
- 238000013329 compounding Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 15
- 230000007935 neutral effect Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 17
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 9
- 238000012216 screening Methods 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000001384 succinic acid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of ultra-high mesoporous volume wet-process phosphoric acid active carbon, which comprises the steps of adding ammonium carbonate and P into phosphoric acid solution in the preparation process of the wet-process phosphoric acid active carbon 2 O 5 And (3) compounding an activating auxiliary agent to activate the activated carbon wood raw materials together so as to prepare the wet-process phosphoric acid activated carbon. The active carbon prepared by the invention has the characteristics of high mesoporous volume, simple preparation process and easy industrial implementation.
Description
Technical Field
The invention relates to a preparation method of active carbon, in particular to a preparation method of wet-process phosphoric acid active carbon with ultrahigh mesoporous volume.
Background
The activated carbon is specially treated carbon, and the traditional activated carbon is prepared by heating and carbonizing a carbon source under the condition of air isolation, and then reacting with gas, so that the surface is corroded, and a structure with a large number of micropores is generated. The activated carbon is widely applied to low-end industries such as fertilizer, chemical industry and the like.
With the deep application of activated carbon in the middle-high end fields of food, medicine, energy storage and the like, the quality requirement on the activated carbon is higher, and when the activated carbon is applied in certain technical fields, the mesoporous volume of the activated carbon is a very important technical index for judging the quality of the activated carbon.
Mesoporous generally refers to mesopores with a pore size of 2-50nm, which plays a very important role in the application of activated carbon, as specified. Firstly, the catalyst can be used for adding and supporting catalysts and various chemicals, and the functions are different according to the different types of the chemicals to be added, so that the activated carbon has the catalyst performance or other special adsorption performance; meanwhile, the mesopores adsorb steam under sufficient vapor pressure according to the capillary condensation principle, which is shown that the activated carbon with developed mesopores has good adsorption effect on organic macromolecules and is commonly used for removing larger colored impurities or particles in colloidal distribution in the solution so as to decolorize the solution; secondly, the mesopores can be used as a passage for the adsorbate to enter micropores, and when the activated carbon with developed mesopores is prepared by adopting special raw materials and processes, the decoloring effect and the gas-phase adsorption performance of the activated carbon can be enhanced.
Compared with the traditional activated carbon preparation process, the activated carbon prepared by wet-process phosphoric acid has higher quality, but still cannot meet the application requirements of middle and high ends because the mesoporous volume is still smaller, such as the existing wet-process phosphoric acid activated carbon and some modified wet-process phosphoric acid activated carbons, the mesoporous volume is only between 0.15 cm and 0.75cm 3 About/g, and the pore volume of the high-quality mesoporous carbon can reach 1-1.5cm 3 About/g. Therefore, the existing wet-process phosphoric acid active carbon does have the defect of smaller mesoporous volume, and the application in the fields of loading, adsorption, decolorization and the like is still hindered.
Therefore, how to further improve the mesoporous volume of the wet-process phosphoric acid activated carbon is one of the key directions of the current wet-process phosphoric acid activated carbon research work.
Disclosure of Invention
The invention aims to provide a preparation method of wet-process phosphoric acid active carbon with ultrahigh mesoporous volume. The active carbon prepared by the invention has the characteristics of high mesoporous volume, simple preparation process and easy industrial implementation.
The technical scheme of the invention is as follows: a preparation method of wet-process phosphoric acid active carbon with ultrahigh mesoporous volume comprises the step of adding ammonium carbonate and P into phosphoric acid solution in the preparation process of wet-process phosphoric acid active carbon 2 O 5 And (3) compounding an activating auxiliary agent to activate the activated carbon wood raw materials together so as to prepare the wet-process phosphoric acid activated carbon.
Further, the preparation method of the wet-process phosphoric acid active carbon with the ultra-high mesoporous volume comprises the following steps:
(1) Taking an active carbon wood raw material;
(2) Drying and crushing the activated carbon wood raw material to obtain raw material powder for later use;
(3) Taking phosphoric acid solution, ammonium carbonate and P 2 O 5 Mixing to obtain an activated mixed solution for standby;
(4) Adding the raw material powder into the activation mixed solution to obtain a material to be activated;
(5) Placing the material to be activated in a heating furnace, heating to 150-250 ℃ for pre-activation treatment, and then continuously heating to 500-600 ℃ for activation treatment;
(6) And cooling and taking out the activated material, and performing aftertreatment to obtain the wet-process phosphoric acid activated carbon with ultrahigh mesoporous volume.
Further, the preparation method of the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume comprises the steps of preparing active carbon wood raw materials including but not limited to wood chips, bamboo chips or shells.
Further, the preparation method of the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume comprises the steps of ammonium carbonate and P 2 O 5 The mass ratio of (2) is 1:1.
Further, according to the preparation method of the wet-process phosphoric acid active carbon with the ultra-high mesoporous volume, the mass concentration of the phosphoric acid solution is 60-65 wt%.
Further, according to the preparation method of the wet-process phosphoric acid active carbon with the ultra-high mesoporous volume, the wood active carbon raw material is dried for 20-30 hours at the temperature of 60-100 ℃, and is crushed to 20-60 meshes after being dried.
Further, the preparation method of the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume comprises the steps of ammonium carbonate and P 2 O 5 The mass ratio of the total mass of (2) to the phosphoric acid solution is 0.5:100-3:100.
Further, in the preparation method of the wet-process phosphoric acid active carbon with the ultra-high mesoporous volume, the mass ratio of the phosphoric acid solution to the raw material powder is 1:1-5:1.
Further, in the preparation method of the wet-process phosphoric acid active carbon with the ultra-high mesoporous volume, in the step (5), the temperature is raised to 150-250 ℃ at the speed of 10 ℃/min, and then the temperature is uniformly raised to 500-600 ℃ during the use of 55-65 min.
Further, the preparation method of the wet-process phosphoric acid active carbon with the ultra-high mesoporous volume comprises the steps of carrying out acid washing by using a phosphoric acid solution with the temperature of 75-85 ℃, washing to be neutral by using water, and drying for 3-8 hours at the temperature of 100-150 ℃.
The beneficial effects of the invention are that
In the preparation process of the wet-process phosphoric acid active carbon, ammonium carbonate and P are added into phosphoric acid solution 2 O 5 As a composite activation auxiliary agent, the addition of the composite activation auxiliary agent can greatly improve the mesoporous volume of the final activated carbon, and the mesoporous volume can reach 1.51cm at most according to experimental results 3 Per gram, compared with the current 0.15-0.75cm 3 The mesoporous volume of the activated carbon is improved by nearly 10 times at the highest and nearly 1 time at the lowest, which certainly has the advantage of ultrahigh mesoporous volume.
In addition, the process of the invention only adds ammonium carbonate and P to the traditional wet-process phosphoric acid active carbon preparation process 2 O 5 The addition of the two activating assistants, therefore,the whole construction process is not complex, and has the advantages of simple process and easy industrialized implementation.
Drawings
FIG. 1 is an isothermal adsorption line of activated carbon prepared in examples and comparative examples of the present invention;
FIG. 2 is a graph showing pore structure distribution of activated carbon prepared in examples and comparative examples according to the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to be limiting.
Embodiments of the invention
Example 1:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing and screening the wood chips to 20-60 meshes, and placing the wood chips in a dryer for standby. Auxiliary agent ammonium carbonate (0.1 g) and P 2 O 5 Mixing (0.1 g) with phosphoric acid solution (10 g,62 wt.%) and adding wood dust powder (5 g), stirring thoroughly, heating to 200deg.C at 10deg.C/min without introducing protective gas, transferring the wood dust mixture to the tube furnace, heating to 550deg.C, cooling to room temperature, and taking out the activating material. Finally, the activated material was transferred to a beaker, pickled with a certain amount of 80 ℃ phosphoric acid solution (10 Be), washed with deionized water until the pH was neutral, and dried in an oven at 120 ℃ for 6 hours.
Example 2:
and (3) drying the wood chips in an oven at 60 ℃ for 30 hours, crushing and screening the wood chips to 20-60 meshes, and placing the wood chips in a dryer for standby. Auxiliary agent ammonium carbonate (0.1 g) and P 2 O 5 Mixing (0.1 g) with phosphoric acid solution (10 g,60 wt.%) and adding wood dust powder (10 g), stirring thoroughly, heating to 150deg.C at 10deg.C/min under the condition of no protective gas in the tube furnace, transferring the wood dust mixture to the tube furnace, heating to 500deg.C for 55min, cooling to room temperature, and taking out the activating material. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 75 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 100 ℃ for 8 hours.
Example 3:
and (3) drying the wood chips in a drying oven at 100 ℃ for 20 hours, crushing and screening the wood chips to 20-60 meshes, and placing the wood chips in a dryer for standby. Auxiliary agent ammonium carbonate (0.1 g) and P 2 O 5 Mixing (0.1 g) with phosphoric acid solution (10 g,62 wt.%) and adding wood dust powder (2 g), stirring thoroughly, heating to 250deg.C at 10deg.C/min under the condition of no protective gas in the tube furnace, transferring the wood dust mixture to the tube furnace, heating to 600deg.C for 60min, cooling to room temperature, and taking out the activating material. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 85 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 150 ℃ for 3 hours.
Comparative example 1:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing and screening the wood chips to 20-60 meshes, and placing the wood chips in a dryer for standby. Mixing auxiliary agent ammonium carbonate (0.1 g), succinic acid (0.1 g) and phosphoric acid solution (10 g), adding wood chip powder (5 g), fully stirring, heating to 200 ℃ at 10 ℃/min under the condition that no protective gas is introduced into the tubular furnace, transferring the wood chip mixture to the tubular furnace, finishing the temperature programming after 60min to 550 ℃, and taking out the activated material after the tubular furnace is cooled to room temperature. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 80±5 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 120 ℃ for 6 hours. .
Comparative example 2:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing and screening the wood chips to 20-60 meshes, and placing the wood chips in a dryer for standby. Succinic acid (0.1 g) and P as auxiliary agents 2 O 5 Mixing (0.1 g) with phosphoric acid solution (10 g), adding wood chip powder (5 g), stirring thoroughly, heating to 200deg.C at 10deg.C/min without introducing protective gas, transferring the wood chip mixture to the tube furnace, heating to 550deg.C, cooling to room temperature, and taking out the activated material. Finally, transferring the activated material into a beaker, pickling with a certain amount of phosphoric acid solution (10 Be) with the temperature of 80+/-5 ℃, washing with deionized water until the pH value is neutral, and drying in an ovenDrying at 120 ℃ for 6h. .
Comparative example 3:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing, screening to 40 meshes, and placing the crushed wood chips in a dryer for standby. Adding the phosphoric acid solution (10 g) into the wood chip powder (5 g), fully stirring, heating to 200 ℃ at 10 ℃/min under the condition that the protective gas is not introduced into the tubular furnace, transferring the wood chip mixture to the tubular furnace, heating to 550 ℃ for 60min, ending, and taking out the activating material after the tubular furnace is cooled to room temperature. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 80±5 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 120 ℃ for 6 hours.
Comparative example 4:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing, screening to 40 meshes, and placing the crushed wood chips in a dryer for standby. Mixing auxiliary agent ammonium carbonate (0.1 g) with phosphoric acid solution (10 g), adding wood chip powder (5 g), stirring thoroughly, heating to 200deg.C at 10deg.C/min under the condition of no protective gas in the tube furnace, transferring the wood chip mixture to the tube furnace, heating to 550deg.C, cooling to room temperature, and taking out the activating material. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 80±5 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 120 ℃ for 6 hours.
Comparative example 5:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing, screening to 40 meshes, and placing the crushed wood chips in a dryer for standby. The auxiliary agent P 2 O 5 Mixing (0.1 g) with phosphoric acid solution (10 g), adding wood chip powder (5 g), stirring thoroughly, heating to 200deg.C at 10deg.C/min without introducing protective gas, transferring the wood chip mixture to the tube furnace, heating to 550deg.C, cooling to room temperature, and taking out the activated material. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 80±5 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 120 ℃ for 6 hours.
Comparative example 6:
and (3) drying the wood chips in an oven at 80 ℃ for 24 hours, crushing, screening to 40 meshes, and placing the crushed wood chips in a dryer for standby. Mixing additive succinic acid (0.1 g) with phosphoric acid solution (10 g), adding wood chip powder (5 g), stirring thoroughly, heating to 200deg.C at 10deg.C/min under the condition of no protective gas in the tube furnace, transferring the wood chip mixture to the tube furnace, heating to 550deg.C, cooling to room temperature, and taking out the activating material. Finally, the activated material was transferred to a beaker, pickled with a certain amount of phosphoric acid solution (10 Be) at 80±5 ℃, washed with deionized water until the pH was neutral, and dried in an oven at 120 ℃ for 6 hours.
The various properties of the activated carbon obtained in example 1 and comparative examples 1 to 6 were examined, and the examination results are shown in Table 1 below.
TABLE 1 detection and analysis of activated carbon
As can be seen from the detection results of Table 1, the mesoporous volume (Vmes) of the activated carbon prepared in example 1 of the present invention is significantly higher than that of the activated carbon prepared in other comparative examples, and the mesoporous volume of the activated carbon prepared in example 1 of the present invention is as high as 1.51cm 3 Per g, whereas comparative example 3 has a mesoporous volume of only 0.3cm without addition of an activating auxiliary 3 The mesoporous volume of the activated carbon is far lower than that of the activated carbon in the embodiment 1, and the result shows that the mesoporous volume of the wet-process phosphoric acid activated carbon is greatly improved after the activating auxiliary agent is added.
Meanwhile, as can be seen from the mesoporous volume of the activated carbon obtained in comparative examples 1 and 4 to 6, although the activating assistant is added in comparative examples 4 to 6, the activating assistant is a single type of activating assistant, the mesoporous volume is improved to a considerable extent compared with the activated carbon obtained in comparative example 3, but the mesoporous volume is still smaller compared with the mesoporous carbon obtained in example 1 of the present invention, and the result shows that the activating effect is better and the mesoporous volume is higher compared with the single activating assistant after the compound assistant of two activating assistants is added.
In addition, it is understood from the mesoporous volume of the activated carbon obtained in comparative examples 1 and 1-2 that, although the same addition of two kinds of activating assistants to comparative examples 1-2 was conducted in the same amount as the activating assistants of example 1 of the present invention, the mesoporous volume of the activated carbon after the activation was not significantly increased and the mesoporous volume was also somewhat decreased as compared with the activated carbon when the activated carbon was activated with a single activating assistant in comparative examples 4-6, which revealed that the activating effect of the composite activating assistant was not necessarily higher but may be lower to some extent as compared with the single activating assistant, whereas the two kinds of activating assistants of the present invention (ammonium carbonate and P) 2 O 5 ) Contrary to the general rule, the mesoporous volume of the wet-process phosphoric acid active carbon is greatly improved to 1.51cm 3 According to the invention, the mesoporous volume is equivalent to that of high-quality mesoporous carbon, and the ammonium carbonate and the P are used for preparing the mesoporous carbon 2 O 5 After being compounded as an activating auxiliary agent, the composite material achieves very remarkable effect.
While the invention has been described with reference to the preferred embodiments, it should be understood that the invention is not limited to the embodiments described above, but is intended to cover modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. A preparation method of wet-process phosphoric acid active carbon with ultrahigh mesoporous volume is characterized by comprising the following steps: in the preparation process of wet-process phosphoric acid active carbon, adding ammonium carbonate and P into phosphoric acid solution 2 O 5 And (3) compounding an activating auxiliary agent to activate the activated carbon wood raw materials together so as to prepare the wet-process phosphoric acid activated carbon.
2. The method for preparing the wet-process phosphoric acid active carbon with the ultrahigh mesoporous volume according to claim 1, which is characterized by comprising the following steps:
(1) Taking an active carbon wood raw material;
(2) Drying and crushing the activated carbon wood raw material to obtain raw material powder for later use;
(3) Taking phosphoric acid solution, ammonium carbonate and P 2 O 5 Mixing to obtain an activated mixed solution for standby;
(4) Adding the raw material powder into the activation mixed solution to obtain a material to be activated;
(5) Placing the material to be activated in a heating furnace, heating to 150-250 ℃ for pre-activation treatment, and then continuously heating to 500-600 ℃ for activation treatment;
(6) And cooling and taking out the activated material, and performing aftertreatment to obtain the wet-process phosphoric acid activated carbon with ultrahigh mesoporous volume.
3. The method for preparing the ultra-high mesoporous volume wet-process phosphoric acid activated carbon according to claim 1 or 2, which is characterized in that: the activated carbon wood raw material includes, but is not limited to, wood chips, bamboo chips, or fruit shells.
4. The method for preparing the ultra-high mesoporous volume wet-process phosphoric acid activated carbon according to claim 1 or 2, which is characterized in that: the ammonium carbonate and P 2 O 5 The mass ratio of (2) is 1:1.
5. The method for preparing the wet-process phosphoric acid active carbon with the ultrahigh mesoporous volume according to claims 1 and 2, which is characterized in that: the mass concentration of the phosphoric acid solution is 60-65wt.%.
6. The method for preparing the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume according to claim 2, which is characterized in that: the active carbon wood raw material is dried for 20-30h at 60-100 ℃, and crushed to 20-60 meshes after drying.
7. The ultra-high of claim 2The preparation method of the wet-process phosphoric acid active carbon with mesoporous volume is characterized by comprising the following steps: the ammonium carbonate and P 2 O 5 The mass ratio of the total mass of (2) to the phosphoric acid solution is 0.5:100-3:100.
8. The method for preparing the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume according to claim 2, which is characterized in that: the mass ratio of the phosphoric acid solution to the raw material powder is 1:1-5:1.
9. The method for preparing the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume according to claim 2, which is characterized in that: the step (5) is to heat up to 150-250 ℃ at the speed of 10 ℃/min, and then heat up to 500-600 ℃ evenly for 55-65 min.
10. The method for preparing the wet-process phosphoric acid active carbon with ultrahigh mesoporous volume according to claim 2, which is characterized in that: the post-treatment is to use phosphoric acid solution with the temperature of 75-85 ℃ for acid washing, then wash with water to be neutral, and dry for 3-8 hours at the temperature of 100-150 ℃.
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