竹炭碳磺酸的制备及其催化性能
发布时间：2019-03-22 11:53
【摘要】：以富含纤维素的天然竹粉为原料,通过硫酸浸渍,炭化和磺化的过程,制备竹炭碳磺酸并将其应用于纤维素水解反应。首先对改性前后的竹粉及其主要成分进行热重分析,发现硫酸能打破竹粉组分之间部分原有的化学键,促进竹粉的热解过程,使竹粉在低温下进行热解与炭化。然后系统地研究浸渍比例、浸渍液浓度、炭化温度和磺化温度等因素对催化剂活性的影响,得到催化剂最优制备条件。最后采用XRD、BET、FT-IR和SEM等方法对竹炭碳磺酸进行表征,结果表明通过合理调控温度能使竹炭磺酸具有良好的孔结构和较高的磺酸量,且磺酸量可能和芳香碳环上的活泼氢数目有关。
[Abstract]:The bamboo charcoal-carbon sulfonic acid is prepared by using natural bamboo powder rich in cellulose as the raw material, and the bamboo charcoal-carbon sulfonic acid is prepared through the process of sulfuric acid dipping, carbonization and sulfonation, and the bamboo charcoal-carbon sulfonic acid is applied to the cellulose hydrolysis reaction. Firstly, the bamboo powder before and after the modification and its main components are thermogravimetric analysis, and it is found that the sulfuric acid can break the original chemical bond between the bamboo powder components and promote the pyrolysis process of the bamboo powder, so that the bamboo powder is pyrolyzed and carbonized at low temperature. The influence of the impregnation ratio, the concentration of the dipping liquid, the carbonization temperature and the sulfonation temperature on the activity of the catalyst was studied systematically, and the optimum preparation conditions of the catalyst were obtained. The carbon sulfonic acid of bamboo charcoal was characterized by XRD, BET, FT-IR and SEM. The results show that the bamboo charcoal sulfonic acid can have a good pore structure and a higher amount of sulfonic acid through the reasonable control of the temperature, and the amount of sulfonic acid may be related to the number of active hydrogen on the aromatic carbon ring.
【作者单位】： 浙江工业大学化工学院;
【基金】：浙江省钱江人才计划项目(2006R10017)~~
【分类号】：O643.36;TQ352.78
本文编号：2445563
[Abstract]:The bamboo charcoal-carbon sulfonic acid is prepared by using natural bamboo powder rich in cellulose as the raw material, and the bamboo charcoal-carbon sulfonic acid is prepared through the process of sulfuric acid dipping, carbonization and sulfonation, and the bamboo charcoal-carbon sulfonic acid is applied to the cellulose hydrolysis reaction. Firstly, the bamboo powder before and after the modification and its main components are thermogravimetric analysis, and it is found that the sulfuric acid can break the original chemical bond between the bamboo powder components and promote the pyrolysis process of the bamboo powder, so that the bamboo powder is pyrolyzed and carbonized at low temperature. The influence of the impregnation ratio, the concentration of the dipping liquid, the carbonization temperature and the sulfonation temperature on the activity of the catalyst was studied systematically, and the optimum preparation conditions of the catalyst were obtained. The carbon sulfonic acid of bamboo charcoal was characterized by XRD, BET, FT-IR and SEM. The results show that the bamboo charcoal sulfonic acid can have a good pore structure and a higher amount of sulfonic acid through the reasonable control of the temperature, and the amount of sulfonic acid may be related to the number of active hydrogen on the aromatic carbon ring.
【作者单位】： 浙江工业大学化工学院;
【基金】：浙江省钱江人才计划项目(2006R10017)~~
【分类号】：O643.36;TQ352.78
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1 董秀芳;李裕;曹端林;;炭化温度对模板法合成介孔炭性能的影响[J];化学研究与应用;2012年01期
，本文编号：2445563
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