A SO2 Fixation Method and Its Use in Preparation of BaSO3 or BaSO4

作者：Zhang Fei; Liu Li-Hua; Sha Feng; Qiao Xian-Shu; Zhang Jian-Bin^*

来源：Chinese Journal of Inorganic Chemistry, 2016, 32(12): 2205-2211.

DOI：10.11862/CJIC.2016.256

• SO2 capture
• SO2-storage materials
• alkyl sulfite
• BaSO4

An innovative SO2 fixation into solid SO2-storage materials (SO2SMs) under mild condition was developed by employing the low-cost amine-glycol systems consisting of 1,2-ethanediamine (EDA) and ethylene glycol series (EGs). In particularly, the systems of EDA+EGs possessed a remarkable SO2 capture capability from 0.364 to 0.662 g(SO2) center dot g(absorbent)(-1), which formed solid SO2SMs after washing with alcohol and drying under vacuum. The resulting SO2SMs were confirmed as alkyl sulfite by extensive characterization using FTIR, XPS and XRD techniques. Subsequently, the EG-based SO2SM (EG-SO2SM) was utilized to prepare BaSO3 or BaSO4 with different morphologies. The gradual release of EDA and EG from EG-SO2SM not only yielded raw material but also generated EDA and EG that acted as efficient surfactants for the subsequent recrystallization process.

• 出版日期2016-12
• 单位内蒙古工业大学