公开(公告)号：KR100886365B1

公开(公告)日：2009-03-03

申请号：KR1020070027360

申请日：2007-03-20

Applicant: 전남대학교산학협력단

Inventor： 김찬 ,  발라 ,  부이티느녹 ,  문희 ,  양갑승 ,  이재욱

IPC: C01B31/08 ,  B01J20/20 ,  B01J21/18

CPC classification number: H01G11/34 ,  Y02E60/13

Abstract: An activated carbon with ultra-high specific surface area which is prepared using corn, which has a specific surface area of 2500 m^2/g or more and an average pore size of about 2 nm, and in which a ratio of micropores to mesopores is controllable is provided, a method for preparing the activated carbon inexpensively and easily is provided, and various uses of the activated carbon including odor removal, water purification, natural gas adsorption, electric double layer supercapacitors, and catalyst carriers are provided. As a method for preparing an activated carbon with ultra-high specific surface area using corn grains, a method for preparing an activated carbon with a specific surface area of 2500 m^2/g or more using corn comprises the steps of: (A) drying and sorting raw material; (B) carbonizing the sorted raw material to a temperature of 500 to 1000 deg.C in an inert gas atmosphere; (C) mixing at least one activating agent selected from potassium hydroxide, sodium hydroxide, calcium carbonate, and zinc chloride with the carbide to activate the carbide, and controlling sizes of mesopores and micropores of the carbide while controlling content, activating time and activating temperature of the activating agent; and (D) cleaning and drying the size-controlled activated carbide. The step(B) is performed by carbonizing the raw material at 550 to 650 deg.C for 1 to 2 hours at a temperature rising rate of 5 deg.C/min. The step(C) is performed by activating the carbide at 700 to 1000 deg.C for 30 to 300 minutes using the activating agent to the carbide at a weight ratio of 1:1 to 5. The cleaning process in the step(D) is repeated until the cleaned carbide has a potential of hydrogen(pH) of 6 to 8.

公开(公告)号：KR1020080085605A

公开(公告)日：2008-09-24

申请号：KR1020070027360

申请日：2007-03-20

Applicant: 전남대학교산학협력단

Inventor： 김찬 ,  발라 ,  부이티느녹 ,  문희 ,  양갑승 ,  이재욱

IPC: C01B31/08 ,  B01J20/20 ,  B01J21/18

CPC classification number: H01G11/34 ,  Y02E60/13 ,  C01B32/30 ,  B01J20/20 ,  B01J21/18

Abstract: An activated carbon with ultra-high specific surface area which is prepared using corn, which has a specific surface area of 2500 m^2/g or more and an average pore size of about 2 nm, and in which a ratio of micropores to mesopores is controllable is provided, a method for preparing the activated carbon inexpensively and easily is provided, and various uses of the activated carbon including odor removal, water purification, natural gas adsorption, electric double layer supercapacitors, and catalyst carriers are provided. As a method for preparing an activated carbon with ultra-high specific surface area using corn grains, a method for preparing an activated carbon with a specific surface area of 2500 m^2/g or more using corn comprises the steps of: (A) drying and sorting raw material; (B) carbonizing the sorted raw material to a temperature of 500 to 1000 deg.C in an inert gas atmosphere; (C) mixing at least one activating agent selected from potassium hydroxide, sodium hydroxide, calcium carbonate, and zinc chloride with the carbide to activate the carbide, and controlling sizes of mesopores and micropores of the carbide while controlling content, activating time and activating temperature of the activating agent; and (D) cleaning and drying the size-controlled activated carbide. The step(B) is performed by carbonizing the raw material at 550 to 650 deg.C for 1 to 2 hours at a temperature rising rate of 5 deg.C/min. The step(C) is performed by activating the carbide at 700 to 1000 deg.C for 30 to 300 minutes using the activating agent to the carbide at a weight ratio of 1:1 to 5. The cleaning process in the step(D) is repeated until the cleaned carbide has a potential of hydrogen(pH) of 6 to 8.

Abstract translation: 具有超高比表面积的活性炭，其使用具有2500m 2 / g以上的比表面积和约2nm的平均孔径的玉米制备，其中微孔与中孔的比例 是可控的，提供了廉价且容易地制备活性炭的方法，并且提供了除臭除臭，水净化，天然气吸附，双电层超级电容器和催化剂载体等活性炭的各种用途。 作为使用玉米粒制备具有超高比表面积的活性炭的方法，使用玉米制备比表面积为2500m 2 / g以上的活性炭的方法包括以下步骤：（A） 干燥和分选原料; （B）在惰性气体气氛中将分选的原料碳化至500〜1000℃的温度; （C）将选自氢氧化钾，氢氧化钠，碳酸钙和氯化锌中的至少一种活化剂与碳化物混合以活化碳化物，并控制碳化物的中孔和微孔的尺寸，同时控制含量，活化时间和活化温度 的活化剂; 和（D）清洁和干燥尺寸控制​​的活性碳化物。 步骤（B）通过在550〜650℃下以5℃/ min的升温速率将原料碳化1〜2小时来进行。 步骤（C）通过使用活化剂在700至1000℃下以1:1至5的重量比将碳化物活化30至300分钟来进行。步骤（D）中的清洁处理 直到清洁的碳化物具有6至8的氢（pH）的电位。