Boehm titration indicanted that acid group increased obviously. It is also proved by FT-IR and TG Approximately 0.8-1.0mmol -SO3H was introduced onto program ACF.

• Boehm滴定分析表明含磺酸基官能团改性的ACF表面酸性基团明显增加；大约lgACF引入了0.；8-1