CN1202992C - Method for preparing carbon molecular sieve from apple dregs - Google Patents
Method for preparing carbon molecular sieve from apple dregs Download PDFInfo
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- CN1202992C CN1202992C CN 03129062 CN03129062A CN1202992C CN 1202992 C CN1202992 C CN 1202992C CN 03129062 CN03129062 CN 03129062 CN 03129062 A CN03129062 A CN 03129062A CN 1202992 C CN1202992 C CN 1202992C
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- molecular sieve
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Abstract
The present invention relates to a method for a preparing carbon molecular sieve from apple dreg, which belongs to the field of carbon material and biomass resource utilization. The present invention has the technical scheme that apple waste resources are used as raw materials which are preprocessed and are carbonized in a vacuum carbonizing furnace or an atmosphere protection carbonizing furnace, and the carbon molecular sieve having high specific surface area and uniform micropore distribution is obtained; the size of micropores is from 6.2 to 10 A. Compared with the traditional method for preparing the carbon molecular sieve, the present invention has the advantages of wide material source, low price, simple preparation method, low preparation cost, high efficiency, convenient control of specific surface area and pore size distribution of the carbon molecular sieve, and more than 1000m<2>/g of highest specific surface area of the prepared carbon molecular sieve. The present invention solves the problems of apple industry in order to utilize waste resources and also provides a new carbon molecular sieve material having large specific surface area.
Description
Technical field
What the present invention relates to is a kind of method for preparing carbon molecular sieve, particularly a kind ofly prepares the method for carbon molecular sieve from apple residue, belongs to the carbon material field.
Background technology
China's apple production is abundant, has every year a large amount of apples to rot owing to supply and marketing unhook, storing technology and apple deep processing fall behind.On the other hand, a large amount of apples is used to squeeze the juice, and a large amount of by product-apple residues that produce do not find suitable purposes to be handled as yet.Have the patent report that apple residue is used to produce fertilizer, it is the general absorbent charcoal material of feedstock production with the apple residue that research is arranged, the research report that does not in addition have other to use about apple residue.
Carbon molecular sieve is a kind of carbonaceous porous material, belongs to a kind of of gac.Its cavity mainly is made up of the micropore below the 1nm and a small amount of macropore, and pore size distribution is narrower, about about 0.5-1.0nm.And common gac also has a large amount of mesopores and macropore except micropore, and mean pore size is about 2nm.The hole of carbon molecular sieve is a slit-type.The raw material that can be used for preparing carbon molecular sieve is very extensive, can be used for making carbon molecular sieve from the natural product to the high molecular polymer.Wherein topmost three kinds is coal, timber, shell.Not seeing and adopting apple or apple residue is the report of feedstock production carbon molecular sieve.
Find by literature search, Hu Fengkai writes articles " method for making of carbon molecular sieve, character and purposes " on " Huaibei coal teachers college journal " the 22nd volume the 2nd phase (June calendar year 2001), this article has been introduced the method for preparing carbon molecular sieve and may be summarized to be following five kinds: thermal separation method, thermal contraction method, gas activation method, cladding process and sedimentation.Wherein thermal separation method be timber, shell, coal or synthetic resins etc. not carbide place inert atmosphere, under suitable thermolysis condition, make its charing make product.Other four kinds of methods continue the aftertreatment processing and preparing after all need preparing the raw material of wood-charcoal material by shell, coal, synthetic resins.And the thermal separation method only is applied to a small amount of special source materials so far, for example saran, polyvinylidene chloride, resol etc., and the preparation method's relative complex cost that adopts is higher relatively.Not seeing with apple or apple residue as yet in further retrieving is the report that raw material preparing obtains carbon molecular sieve.
Summary of the invention
The objective of the invention is at the deficiency in the background technology, a kind of method that is prepared carbon molecular sieve by apple residue is provided, make it directly prepare carbon molecular sieve from apple or apple residue, find and give full play to apple special construction and character, realize that the apple resource makes full use of, compare with traditional carbon molecular sieve preparation method, preparation method's technology that the present invention adopts is simple, and preparation cost is low.
The present invention is achieved by the following technical solutions; it is starting material that the present invention adopts the apple waste material; by the apple waste material is dried, pre-treatment such as pulverizing, charing obtains having high specific surface area in vacuum charring furnace or atmosphere protection charring furnace again, micropore distributes relatively homogeneous, the carbon molecular sieve of pore size in the 0.62-1.0nm scope.
Below the inventive method is further described, specific as follows:
(1) pre-treatment of raw material
The apple waste material is carried out pre-treatment, by extruding, oven dry, pulverizing, starting material are made the exsiccant powder, powder diameter is less than 1000 microns, and a conventional oven or vacuum drying oven or freeze drier are adopted in oven dry.
(2) charing in vacuum charring furnace or atmosphere protection charring furnace
To put into charring furnace through pretreated starting material, the stacking mode is different and different according to the situation of employing carbonizing apparatus.For general vacuum charring furnace or gas shield charring furnace, the natural in the plane lay of starting material, lay thickness can be regulated in a big way, and preferred thickness is 1cm-5cm.For the continuously carbonizing stove, the perhaps charring furnace that starting material constantly can be stirred, starting material can freely be placed.Temperature is risen to carbonization temperature, and charing gets carbon molecular sieve carbon material to the end.Carbonization temperature is controlled at 600-1000 ℃, and preferred temperature is 750-850 ℃.
The carbon material for preparing is to have high specific surface area (hundreds of-1000 above m
2/ g), the aperture mainly is distributed in the powdery carbon molecular screen material of 0.62-1.0nm.
The present invention has substantive distinguishing features and marked improvement, compare with performance with the manufacture method of traditional carbon molecular sieve, the starting material that the present invention adopts are waste materials of apple industry, are that a kind of new carbon molecular sieve prepares starting material, its wide material sources, and cheap; The preparation method is very simple, includes only two steps of pre-treatment of raw material and charing, need not traditional carbon molecular sieves such as activation, deposition and prepares needed preparation process, and preparation cost is low, the efficient height; The carbon molecular sieve that makes has than the high specific surface area of general traditional molecular sieve, and the highest specific surface area can be greater than 1000m
2/ g.The present invention solves the problem of apple industry wasted resources, and a kind of new carbon molecular sieve material also is provided, and has high specific surface area simultaneously.
Embodiment
Content in conjunction with the inventive method further provides following examples:
Embodiment one:
Be ground into powder after the apple residue lyophilize with the industry generation of squeezing the juice, sieved with vibratory screening apparatus, get part 500 grams that size is lower than 63 μ m, it evenly is laid on the charcoal dish, lay thickness is 1cm, inserts in the vacuum charring furnace.Speed with 7.5 ℃/min is elevated to 800 ℃ with temperature, keeps charing 1 hour.Naturally after the cooling, obtain product 60 grams.The specific surface area of this product is 1215m
2/ g, micro pore volume are 0.41cm
3/ g, mean pore size is 0.99nm.Its topmost pore size is 0.62nm.
Embodiment two:
With being ground into powder after the apple residue lyophilize, sieved with vibratory screening apparatus, get part 500 grams that are of a size of 125-250 μ m, it evenly is laid on the charcoal dish, lay thickness is 3cm, inserts in the vacuum charring furnace.Speed with 5 ℃/min is elevated to 750 ℃ with temperature, keeps charing 1 hour.Naturally after the cooling, obtain product 90 grams.The specific surface area of this product is 781m
2/ g, micro pore volume are 0.23cm
3/ g, mean pore size is 0.79nm.Its topmost pore size is 0.65nm.
Embodiment three:
With being ground into powder after the apple residue lyophilize, sieved with vibratory screening apparatus, get part 500 grams that are of a size of 250-1000 μ m, it evenly is laid on the charcoal dish, lay thickness is 5cm, inserts in the vacuum charring furnace.Speed with 5 ℃/min is elevated to 850 ℃ with temperature, keeps charing 1 hour.Naturally after the cooling, obtain product 100 grams.The specific surface area of this product is 527m
2/ g, micro pore volume are 0.20cm
3/ g, mean pore size is 0.78nm.Its topmost pore size is 0.65nm.
Claims (2)
1, a kind of method for preparing carbon molecular sieve by apple residue; it is characterized in that; adopting the apple waste material is starting material, by starting material are carried out pre-treatment, again in vacuum charring furnace or atmosphere protection charring furnace 750-850 ℃ of following charing to obtain specific surface area be hundreds of-1000m
2/ g, micropore distribution homogeneous, the carbon molecular sieve of micropore size in the 0.62-1.0nm scope, starting material are carried out pre-treatment, specific as follows: that the apple waste material is carried out pre-treatment, by extruding, oven dry, pulverizing, starting material are made the exsiccant powder, powder diameter is less than 1000 microns, and a conventional oven or vacuum drying oven or freeze drier are adopted in oven dry.
2, according to claim 1ly prepare the method for carbon molecular sieve, it is characterized in that by apple residue, described charing in vacuum charring furnace or atmosphere protection charring furnace, specific as follows:
To put into charring furnace through pretreated starting material; the stacking mode has differentiation according to the employing carbonizing apparatus: for general vacuum charring furnace or atmosphere protection charring furnace; the natural in the plane lay of starting material; lay thickness is 1cm-5cm; for the continuously carbonizing stove, the perhaps charring furnace that starting material can be stirred continuously, starting material are freely placed; temperature is risen to carbonization temperature, and charing gets carbon molecular sieve to the end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03129062 CN1202992C (en) | 2003-06-05 | 2003-06-05 | Method for preparing carbon molecular sieve from apple dregs |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03129062 CN1202992C (en) | 2003-06-05 | 2003-06-05 | Method for preparing carbon molecular sieve from apple dregs |
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| CN1472134A CN1472134A (en) | 2004-02-04 |
| CN1202992C true CN1202992C (en) | 2005-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555432A (en) * | 2016-07-09 | 2018-01-09 | 王玲燕 | A kind of method that high-specific surface area nitrogen carbon molecular sieve is prepared by bagasse |
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| CN105152156B (en) * | 2015-08-14 | 2017-04-12 | 湖州新奥利吸附材料有限公司 | Preparation technology of high-performance carbon molecular sieve |
| CN106006606B (en) * | 2016-06-20 | 2019-02-01 | 浙江品创知识产权服务有限公司 | A method of nitrogen carbon molecular sieve is prepared by apple pomace |
| CN107529517A (en) * | 2016-07-09 | 2018-01-02 | 王玲燕 | A kind of method that nitrogen carbon molecular sieve is prepared by bagasse |
| CN106608623A (en) * | 2016-12-16 | 2017-05-03 | 陕西中医药大学 | Method for preparing jujube pit activated carbon through calcination method |
| CN107867678A (en) * | 2017-12-15 | 2018-04-03 | 广州中天联合高新技术发展有限公司 | A kind of carbon-based new material integrated application production system of high efficiency based on biomass |
| CN111067849B (en) * | 2020-01-13 | 2023-07-28 | 广州洁宜日化用品有限公司 | Preparation method of hand sanitizer suitable for baby skin |
| CN111921497A (en) * | 2020-07-15 | 2020-11-13 | 西安建筑科技大学 | Method for preparing magnetic biochar by pyrolyzing apple pomace |
| CN114956074A (en) * | 2022-06-17 | 2022-08-30 | 西安交通大学 | Seaweed-based three-dimensional porous carbon sieve and preparation method thereof |
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2003
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555432A (en) * | 2016-07-09 | 2018-01-09 | 王玲燕 | A kind of method that high-specific surface area nitrogen carbon molecular sieve is prepared by bagasse |
| CN107555432B (en) * | 2016-07-09 | 2020-06-19 | 南京溧水高新创业投资管理有限公司 | Method for preparing nitrogen carbon molecular sieve with high specific surface area from bagasse |
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