Enhancement of the SO2 sorption capacity of CuO/gamma-Al2O3 sorbent by an alkali-salt promoter

被引：29

作者：

Jeong, SM

Kim, SD

机构：

[1] KOREA ADV INST SCI & TECHNOL,DEPT CHEM ENGN,TAEJON 305701,SOUTH KOREA

[2] KOREA ADV INST SCI & TECHNOL,ENERGY & ENVIRONM RES CTR,TAEJON 305701,SOUTH KOREA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1997年 / 36卷 / 12期

关键词：

D O I：

10.1021/ie970206h

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Sulfation of the alkali-salt-promoted CuO/gamma-Al2O3 sorbent has been carried out in a thermogravimetric analyzer, and the thermal decomposition characteristics of the sorbent and alkali salt in Nz gas were determined by a differential thermal analyzer. An addition of alkali salt to the sorbent increases SO2 sorption and reduces the temperature range for bulk sulfation of the CuO/gamma-Al2O3 sorbent. The main product in sulfation of the LiCl-promoted sorbent above 450 degrees C is found to be Al-2(SO4)(3) by an X-ray diffractometer. The rank for sulfur removal capacity of alkali salts as additives in CUO/gamma-Al2O3 sorbent is found to be LiCl > LiBr approximate to NaCl > LiF approximate to KCl approximate to NaF. In the cycle test of sulfation-regeneration at 500 degrees C, SO2 removal capacities of LiCl- and NaCl-promoted sorbents are over 3 times than those of the promoter-free sorbent for up to 30 cycles.

引用

页码：5425 / 5431

页数：7

共 15 条

[1] ENVIRONMENTAL CATALYSIS [J].