Synthesis of discrete SSZ-39 zeolite nanosheets by solvent-free seed-assisted route for efficient CO2 capture

被引：0

作者：

Luo, Yilong ^{[1
]}

Xiao, Hong ^{[1
]}

Ning, Zuoding ^{[1
]}

Wang, Wenhan ^{[1
]}

Wang, Qing ^{[2
]}

Wang, Bin ^{[1
]}

Zhou, Rongfei ^{[1
]}

Xing, Weihong ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

[2] Hefei Univ, Sch Energy Mat & Chem Engn, Hefei 230601, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2025年 / 359卷

关键词：

SSZ-39; zeolite; Zeolite nanosheet; Adsorption; CO2; separation; MEMBRANES; TRANSFORMATION; ADSORPTION; SEPARATION; SORBENTS;

D O I：

10.1016/j.seppur.2024.130637

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Efficient CO2 capture from flue gas and natural gas is highly desirable to reduce greenhouse gas emissions. Discrete SSZ-39 zeolite nanosheets are prepared by the solvent-free seed-assisted route for the first time to capture CO2. Synthesis parameters such as H2O/SiO2 ratio and synthesis time are optimized and the formation mechanism of the SSZ-39 zeolite nanosheets is studied. The nanosheets have a thickness of 30 nm and an aspect ratio of 10. The HR-TEM characterization shows that the base face of the nanosheet corresponds to its (001) plane with a pore size of 3.8 & Aring; x 3.8 & Aring;. The CO2/N2 and CO2/CH4 selectivities of SSZ-39 zeolite nanosheets are as high as 1092 and 136 by Ideal Adsorption Solution Theory (IAST), respectively. Furthermore, breakthrough results indicate that SSZ-39 zeolite nanosheets have great application potential for separating CO2 from flue gas and natural gas.

引用

页数：8