95. Transformation of nitrogen functionality during pyrolysis of model coals

Abstract

In order to study the change and release of different nitrogen structures during coal pyrolysis, two model coals containing pyrrolic or pyridinic nitrogen with or without catalyst addition have been pyrolyzed in a fixed-bed reactor at 10℃/min up to 1000℃. Pyrolysis results show that iron and calcium catalysts catalyze char nitrogen release at different temperatures. XPS analysis indicates that the catalysts mainly catalyze the release of pyridinic and quaternary nitrogen.