Organic oxygen and nitrogen transformations during pyrolysis of coal
Conference
·
OSTI ID:254673
- Exxon Research and Engineering Co., Annadale, NJ (United States)
The chemical changes in organically bound oxygen and nitrogen forms have been studied using X-ray Photoelectron Spectroscopy (XPS) following mild pyrolysis of Argonne Premium coal. The evolution of CO{sub 2}, CO and H{sub 2}O during pyrolysis was quantified and their appearance was associated with the loss of hydroxyl and carboxyl functional groups present in coal. There is a corresponding loss of quaternary nitrogen species upon pyrolysis. This loss of quaternary nitrogen species is interpreted to result from broken associations between pyridinic nitrogen and hydroxyl groups from either carboxylic acids or aromatic hydroxyl moieties.
- OSTI ID:
- 254673
- Report Number(s):
- CONF-940813--
- Country of Publication:
- United States
- Language:
- English
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