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中文摘要：
以竹材加工中产生的锯屑为原料,经磷酸浸渍48h～72h后,在200℃条件下热解2h得到竹炭,将其用发烟硫酸在100℃下磺化2h得到具有酸催化功能的磺化竹炭。XRD和FTIR分析表明：磺化竹炭是一种具有多环芳烃结构的无定型固体酸功能材料。采用吡啶吸附红外漫反射法确定表面酸位类型为质子酸。用离子交换—酸碱滴定法测得磺化竹炭的酸量为2.02mm o l.g-1。在催化多种醛、酮与乙二醇的缩合反应中,磺化竹炭具有良好的催化活性和重复使用性能。
英文摘要：
Bamboo sawdust was soaked in phosphoric acid for 48-72 h and bamboo char was obtained by pyrolysis of the soaked sawdust at 200 ℃ for 2 h.The latter was treated at 100 ℃ for 2 h in fuming sulfuric acid to produce sulfonated bamboo char.The results of XRD and FTIR showed that the product a solid amorphous material with polycyclic aromatic rings and acidic functional groups.The result of pyridine adsorption DRIFT showed that the surface acid sites were proton type.The amount of acid in sulfonated bamboo char was 2.02 mmol·g-1 as determined by ion exchange and titration.Sulfonated bamboo char had a good catalytic activity and can be reused in the acetalization of ethylene glycol with different aldehydes or ketones.
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