期刊论文

Preparation of Fe-NaA molecular sieve membrane and its application in catalytic wet peroxide oxidation of methyl orange solution

Yi, Z.

中文

环境科学学报

0253-2468

2019

39

8

2543-2549

10.13671/j.hjkxxb.2019.0101

No.41773133:国家自然科学基金 No.17A028:湖南省教育厅科学研究项目

本校为第一且通讯机构

采用湿法造纸、二次生长和湿法浸渍法合成了一种新型微纤复合Fe-NaA分子筛膜催化剂,并将其用于催化湿式H_2O_2氧化甲基橙溶液.首先通过湿法造纸和烧结工艺制备纸状烧结不锈钢微纤(PSSF)载体,然后采用二次生长法在PSSF上合成NaA分子筛膜,最后以九水硝酸铁(Fe(NO_3)_3·9H_2O)和微纤复合NaA分子筛膜为原料,利用湿法浸渍法制备微纤复合Fe-NaA分子筛膜催化剂.考察了连续固定床反应器中温度、床层高度、进料液流量和甲基橙入口浓度对甲基橙降解性能的影响,并测定了催化剂重复使用3次后的稳定性.结果表明,随温度及床层高度增加,甲基橙转化率先增加然后趋于稳定;随进料液流量增加,甲基橙转化率均大于95...

A novel microfiber supported Fe-NaA molecular sieve membrane was prepared to catalyze wet peroxide oxidation of methyl orange in aqueous solution. Firstly, the paper-like sintered stainless steel fiber (PSSF) support was prepared by the wet lay-up papermaking and sintering process; then a NaA molecular sieve membrane was synthesized on the PSSF by secondary growth method; finally, microfiber supported Fe-NaA molecular sieve membrane catalyst was prepared by wet impregnation method using Fe(NO3)3•9H2O and NaA molecular sieve membrane as raw mat...