Preparation and textural characterisation of activated carbon from vine shoots (Vitis vinifera) by H3PO4 -: Chemical activation
Preparation and textural characterisation of activated carbon from vine shoots (Vitis vinifera) by H3PO4 -: Chemical activation
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DOI：
10.1016/j.apsusc.2005.11.007
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发表时间：
2006-06-30
影响因子：
6.7
通讯作者：
Macias-Garcia, A.
中科院分区：
文献类型：
--
作者：
Corcho-Corral, B.;Olivares-Marin, M.;Macias-Garcia, A.
以葡萄园每年修剪产生的大量廉价农业废弃物--葡萄枝（葡萄属vinifera）（VS）为原料，采用磷酸活化法制备粉末活性炭。在尺寸减小之后，将VS用60重量% H3 PO 4溶液在室温下，50和85 ℃。将三种浸渍产物在400摄氏度下碳化。将在50 ℃下浸渍的产物首先在150-250 ℃下加热，然后在400 ℃下加热，或者简单地在350-550 ℃下在N-2气氛中加热。每次动态加热后的等温处理时间为2 h。通过气体吸附（N-2，-196 ° C）、水银孔隙率测定法和密度测量对碳进行结构表征。还应用了FT-IR光谱。当在50 ℃下用H3 PO 4溶液浸渍VS时，以及对于在200和450 ℃下等温加热的产物，获得了更好的表面积和微孔性的发展。对于在中间温度下浸渍和加热的产品，中孔体积通常也较高。(c)2005 Elsevier B. V.保留所有权利。
An abundant and low-cost agricultural waste as vine shoots (Vitis vinifera) (VS), which is generated by the annual pruning of vineyards, has been used as raw material in the preparation of powder activated carbon (AC) by the method of chemical activation with phosphoric acid. After size reduction, VS were impregnated for 2 h with 60 wt.% H3PO4 solution at room temperature, 50 and 85 degrees C. The three impregnated products were carbonised at 400 degrees C. The product impregnated at 50 degrees C was heated either first at 150-250 degrees C and then at 400 degrees C or simply at 350-550 degrees C in N-2 atmosphere. The time of isothermal treatment after each dynamic heating was 2 h. The carbons were texturally characterised by gas adsorption (N-2, -196 degrees C), mercury porosimetry, and density measurements. FT-IR spectroscopy was also applied. Better developments of surface area and microporosity are obtained when the impregnation of VS with the H3PO4 solution is effected at 50 degrees C and for the products heated isothermally at 200 and 450 degrees C. The mesopore volume is also usually higher for the products impregnated and heated at intermediate temperatures. (c) 2005 Elsevier B.V. All rights reserved.