The effects of poly(ethylene glycol) on the low-temperature oxidation reaction of coal as monitored using in situ series diffuse reflectance FTIR

다국어 초록 (Multilingual Abstract)

In situ series diffuse reflectance FTIR was used to study the effects of poly(ethylene glycol) as a potentialchemical additive inhibiting coal oxidation process at low temperatures. Two coals with different volatile content and,different ash percentages were examined following treatment with 5 wt% poly(ethylene glycol) 200. The surfaces ofsamples both with and without the additive were analyzed at temperature up to 200 oC in air using in situ diffuse reflectanceFTIR. The results showed that poly(ethylene glycol) 200 is capable of inhibiting the oxidation of aliphaticmoieties such as methyl and methylene groups, and also reducing the quantity of surface hydroxyl groups through reactionsthat form more stable ether linkages, thus improving the thermal stability of the coal. A mechanism by whichthe additive interacts with the coal surfaces is proposed.

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