Spectrophotometric in-line monitoring of the electrochemical production of polysulfides using an ATR-probe

被引：12

作者：

Chai, XS

Danielsson, LG ^{[1
]}

Yang, XT

Behm, M

机构：

[1] Royal Inst Technol, Div Analyt Chem, S-10044 Stockholm, Sweden

[2] Royal Inst Technol, Div Appl Electrochem, S-10044 Stockholm, Sweden

来源：

PROCESS CONTROL AND QUALITY | 1998年 / 11卷 / 02期

关键词：

sulfide; polysulfide excess sulfur; ATR-probe; UV-vis; in-line; process monitoring; electrochemical oxidation;

D O I：

10.1163/156856698750247830

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

With an ATR-probe For the UV-vis range it is possible to apply spectrophotometry to very concentrated process liquors without dilution. In this paper the application of a new ATR-probe to the monitoring of sulfur species during an electrochemical process for production of polysulfides is presented. In this system, the temperature and the total salt concentration are relatively constant. A linear relation exists between the ATR-probe response and the concentration of adsorbing species. Therefore, the process can be followed by simple monitoring of a few wavelengths. The ATR-probe was easily implemented and showed no signs of deterioration in the hot strongly alkaline medium. Temperature has a significant effect on measurement with ATR-probes. Other factors that might also affect the measurements using an ATR-probe an briefly discussed.

引用

页码：153 / 159

页数：7

共 8 条

[1] Electrochemical production of polysulfides and sodium hydroxide from while liquor .2. Electrolysis in a laboratory scale flow cell [J].