刺竹炭灰分含量影响因素及表征研究  

Study on Influencing Factors and Characterization of Ash Content of Bambusa sinospinosa Charcoal

作　　者：邵远超 田华宇 王国睿 郝海彦 张敏[1] 张文标[1] SHAO Yuan-chao;TIAN Hua-yu;WANG Guo-rui;HAO Hai-yan;ZHANG Min;ZHANG Wen-biao(College of Chemistry and Materials Engineering,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;Jinglei Science and Technology Co.,Ltd.,Yibin 644000,Sichuan,China)

机构地区：[1]浙江农林大学化学与材料工程学院,浙江杭州311300 [2]四川惊雷科技股份有限公司,四川宜宾644000

出　　处：《竹子学报》2022年第4期26-34,共9页Journal of Bamboo Research

基　　金：浙江省省级重点研发计划项目(2021C03146)。

摘　　要：为了更好地应用刺竹炭,开发高附加值产品,对刺竹灰分、微观形貌等进行研究。笔者以刺竹作为原料,采用单因素实验法研究刺竹不同的立地条件、竹龄、部位、炭化工艺等对刺竹炭灰分的影响,并通过傅里叶红外吸收光谱(FTIR)、电镜(SEM)、比表面积及孔隙结构测试(BET)、元素分析(ICP)等研究刺竹和刺竹炭官能团、微观结构及元素含量变化情况,结果表明:(1)最低灰分条件为阴坡下坡3 a基部刺竹,炭化工艺为5℃·min^(-1)升温速率下炭化温度500℃、炭化时间2 h,灰分含量为4.36%;最高灰分条件为阳坡上坡5 a梢部刺竹,炭化工艺为5℃·min^(-1)升温速率下炭化温度1 000℃、炭化时间4 h,灰分含量为8.80%。刺竹灰分含量阳坡略大于阴坡,上坡到下坡、梢部到基部灰分含量递减,随竹龄、炭化温度、时间增加灰分含量递增。(2)红外吸收光谱表明刺竹炭化后部分峰值变弱,不同条件刺竹炭化后峰值差异并不明显;元素分析结果表明不同条件刺竹元素含量相差较小,炭化后元素含量下降,随炭化温度升高元素含量略微降低。(3)炭化后刺竹炭形貌变得相对光滑平整,轮廓清晰;随着炭化温度升高,孔隙结构增加较明显,比表面积、总孔容、微孔容、孔容率都呈上升趋势,低灰分条件刺竹经炭化后的刺竹炭比表面积大于高灰分条件刺竹经炭化后的刺竹炭。In order to better use of Bambusa sinospinosa charcoal and develop a high value-added product, the research on relationship among bamboo ash content, microstructure and other manufactureing processes were conducted. The effects of different site conditions, bamboo age, position and carbonization process on the ash content of B. sinospinosa charcoal were studied by single factor experiment method. The changes of functional groups, microstructure and elemental content of B. sinospinosa and carbon were determined by Fourier transform infrared spectroscopy(FTIR), electron microscopy(SEM), BET specific surface area and ICP elemental analysis merthod. The results showed that:(1) The ash content of B. sinospinosa charcoal was the lowest(4.36%) under the following carbonization processing conditions: 3-year-old bamboo timber from the base of the shady slope, heating rate 5 ℃·min^(-1), carbonization temperature 500 ℃,2 h. The maximum ash content was 8.80% under the following conditions: 5-year-old bamboo timber from the upper part of the sunny slope, carbonization temperature 1 000 ℃, 4 h, heating rate of 5 ℃·min^(-1). The ash content of B. sinospinosa from the sunny slope was slightly higher than that from the shady slope. The ash content of B. sinospinosa decreased from the upper slope to the lower slope and from the tip to the base of bamboo culm, and increased with the increase of bamboo age, carbonization temperature and time.(2)With the increase of carbonization temperature, ash content increased. Infrared absorption spectrum showed that the peak values weakened after carbonization, and there was no significant difference in the peak values under the different carbonization conditions. The results of elemental analysis showed that there was little difference in the elemental content of B. sinospinosa under different conditions, The elemental content decreased after carbonizatio, and decreased slightly with the increase of carbonization temperature.(3)After carbonization, the morphology of B. sinospinosa ch

关 键 词：立地条件 刺竹 炭化工艺 刺竹炭 灰分含量 

分 类 号：TQ914[化学工程]