竹质活性炭作为乙炔气相法制备醋酸乙烯催化剂载体的研究Study on Bamboo-Derived Activated Carbon as Catalyst Support for Vinyl Acetate Synthesis Using Acetic Acid and Acetylene
郭秀玲,陈光辉,李建隆
摘要(Abstract):
分别以磷酸法、炭化活化一步法制备的竹质活性炭为例,利用SEM、N_(2-)物理吸附等表征手段系统比较了竹质活性炭和椰壳活性炭在物化性能方面的异同,同时利用热重法考察了竹质活性炭作为催化剂载体对醋酸锌的负载量,并以气固相固定床催化反应装置为评价装置,通过乙炔气相法制备醋酸乙烯的合成反应对其催化能力进行评价。实验结果表明,磷酸法制备的竹质活性炭在比表面积、孔结构等物化性能方面都已具备作为催化剂载体的条件,同时具有较好的负载量。但由于孔的分布多为微孔,中孔和大孔的分布较少,所以催化能力相对较低;通过对竹质活性炭进行初步改性,所制备的催化剂生产能力有一定的提高,这说明竹质活性炭具备良好的改性潜力。
关键词(KeyWords): 竹质活性炭;催化剂载体;乙炔气相法;醋酸乙烯
基金项目(Foundation): 国家自然科学基金(21276132)
作者(Author): 郭秀玲,陈光辉,李建隆
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