Ultralow Emissions of Low-Concentration SO2 in Flue Gas Using Azole-Based Ionic Liquids

被引：0

作者：

Jiang, Lili ^{[1
,2
]}

Zhao, Zhenyu ^{[1
,2
]}

Wang, Kaili ^{[1
,2
]}

Zhang, Zhaowei ^{[1
,2
]}

Lin, Wenjun ^{[1
,2
]}

Li, Haoran ^{[1
,2
]}

Wang, Congmin ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Ctr Chem Frontier Technol, Dept Chem, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Dept Chem, Natl Key Lab Biobased Transportat Fuel Technol, Hangzhou 310027, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2024年 / 63卷 / 50期

基金：

中国国家自然科学基金;

关键词：

HIGHLY EFFICIENT; CO2; ABSORPTION; CAPTURE; DESULFURIZATION; SOLVENTS;

D O I：

10.1021/acs.iecr.4c03797

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In recent years, ultralow emissions (ULE) have attracted more attention due to the stricter environmental pollution standards. Developing desulfurizers to meet the needs of ultralow emissions standards is pressingly needed. Herein, various ionic liquids (ILs) were designed using the basicity-tunable and cation-tunable strategies for the capture of 2000 ppm of SO2 in flue gas. Furthermore, NMR spectra, FT-IR spectra, and DFT calculations, including noncovalent interaction (NCI) and reduced density gradient (RDG) analysis, were used to testify the absorption mechanism. Anions of ILs were proved to play a vital role in ultralow emissions, and [Bentriz] was regarded as an ideal anion for the ultralow emission in this work, while cations of ILs had little effect on ultralow emissions performance. [P-4442][Bentriz] exhibited excellent ability of ultralow emissions (5 ppm), splendid removal efficiency (>99%), outstanding absorption capacity (1.03 mol SO2/mol IL), and good reversibility (6 cycles).

引用

页码：22053 / 22060

页数：8

共 48 条

[1] Uptake of gas-phase SO2, H2S, and CO2 by aqueous solutions [J].