In search of a recyclable sulphur dioxide sponge-a new look at an old system

T S Hor; H K Lee; Y P Leong; L T Phang; Z M Zhang

doi:10.1007/BF00401307

In search of a recyclable sulphur dioxide sponge-a new look at an old system

Environ Monit Assess. 1991 Oct;19(1-3):151-5. doi: 10.1007/BF00401307.

Authors

T S Hor¹, H K Lee, Y P Leong, L T Phang, Z M Zhang

Affiliation

¹ Department of Chemistry, National University of Singapore, Kent Ridge, 0511, Republic of Singapore.

PMID: 24233935
DOI: 10.1007/BF00401307

Abstract

The sulphur dioxide content and thermal stability of the quinol-SO2 clathrate have been studied by thermogravimetric analysis (TG), its derivative (DTG) and differential scanning calorimetry (DSC). These analyses demonstrated the thermal recoverability of the quinol from the clathrate and hence its potential use as a sponge for SO2 present in the environment as a pollutant. Similarly, Bu4N(+)I(-) was found to occlude NO2 and SO2 at 50°C in solution.