High catalytic performances of low rank coal chars in ammonia decomposition at high temperatures
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 304-305 |
Journal / Publication | ACS Division of Fuel Chemistry, Preprints |
Volume | 48 |
Issue number | 1 |
Publication status | Published - Mar 2003 |
Externally published | Yes |
Conference
Title | Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference |
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Place | United States |
City | San Antonio, TX |
Period | 10 - 12 March 2003 |
Link(s)
Abstract
To develop a novel hot gas cleanup method to efficiently remove heteroatom compounds from coal gasification products is important to achieve high power-generation efficiency in integrated gasification combined cycle technologies. Some chars prepared from low rank coals worked efficiently as the catalysts for decomposition at 750°C of 2000 ppm NH3 diluted with helium. The presence of fine particles of metallic iron and CaOx, formed from Fe and Ca ions naturally present in low rank coals, accounted for such catalytic performances. A stronger correlation between NH3 conversion to N2 and Fe content in characteristic was observed. The char with the largest content of 2 wt % iron showed the stable activity during 25 hr reaction and achieved complete decomposition of NH3 at 850°C. NH3 conversion increased with increasing time on stream.
Bibliographic Note
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Citation Format(s)
High catalytic performances of low rank coal chars in ammonia decomposition at high temperatures. / Ohtsuka, Yasuo; Xu, Chunbao; Kong, Dapeng et al.
In: ACS Division of Fuel Chemistry, Preprints, Vol. 48, No. 1, 03.2003, p. 304-305.
In: ACS Division of Fuel Chemistry, Preprints, Vol. 48, No. 1, 03.2003, p. 304-305.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review