不同催化剂对磷酸法制备木质颗粒活性炭的影响.doc

文档介绍：
不同催化剂对磷酸法制备木质颗粒活性炭
的影响#
卢燕凤1,曾巧玲1,李涛1,林冠烽2,吕建华1,郑德勇1,黄彪1**
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(1. 福建农林大学材料工程学院,福州 350002;
2. 福建省林业科学研究院,福州 350012)
摘要:以杉木屑为原料,在磷酸法颗粒活性炭捏合成型过程中,添加不同催化剂,选择不同
的浸渍量,制备中微孔均较发达的木质颗粒活性炭。通过测定颗粒活性炭的碘吸附值、亚甲
基蓝吸附值及傅立叶红外光谱,研究了不同催化剂以及不同浸渍量和活化工艺的改变对木质
颗粒活性炭碘吸附值、亚甲蓝吸附值及官能团的影响规律。结果表明:催化剂有助于提高碘
吸附值和亚甲基蓝吸附值,而且提高催化剂的量,有利于木质颗粒活性炭中孔和大孔的发展,
因此选择不同的催化剂量,可以灵活调整活性炭微孔、中孔和大孔的比例,实现活性炭孔隙
的调变;另一方面添加催化剂可以降低活化温度实现节能减排。
关键词:催化剂工程;颗粒活性炭;活化;磷酸;自胶合
中图分类号:
Effect of Different Catalysts on Preparing Granular
Activated Carbon with Phosphoric Acid
LU Yanfeng1, ZENG Qiaoling1, LI Tao1, LIN Guanfeng2, LV Jianhua1, ZHENG
Deyong1, HUANG Biao1
(1. Materials Engineering College, Fujian Agriculture and Forestry University, Fuzhou 350002;
2. Fujian Academy of Forestry, Fuzhou 350012)
Abstract: At kneading molding process of granular activated carbon by phosphoric acid activation,
meso- and micropores granular activated carbon was prepared with cedar wood by impregnation
in the solution consisting of potassium nitrate or ammonium nitrate as catalysts at different ratios,
second activation, removing anic matters by acid washing and water cleaning. Then, the
Iodine number, methylene blue value and the infrared spectroscopic analysis of the prepared
granular activated carbon were measured. The results show that the catalysts are in favour of
increasing the Iodine n