2011
DOI: 10.1007/s11164-011-0384-x
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A study on Zn-based catal-sorbents for the simultaneous removal of hydrogen sulfide and ammonia at high temperature

Abstract: To simultaneously remove hydrogen sulfide and ammonia from hot coal gases, the ammonia decomposition abilities of various metal oxide catalysts were tested in the absence/presence of hydrogen sulfide, at 650°C. Cobalt oxide, molybdenum oxide, and nickel oxide have high ammonia decomposition abilities ([95%) in the absence of hydrogen sulfide, but such abilities rapidly decreased during the reaction in the presence of hydrogen sulfide. To improve the simultaneous removal abilities of metal oxides, Zn-based cata… Show more

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Cited by 10 publications
(1 citation statement)
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“…However, the catalyst must be tolerant to other contaminants, especially sulfur impurities (e.g., H 2 S, COS) which deactivate catalysts after short operation period. , Catalyst deactivation by sulfur poisoning can be exacerbated when operating reactors at higher pressure . Common industrial Ni-based reforming catalysts as well as other nickel catalyst formulations with Zn, Ce, Co, Mo, Fe, and Ru are very effective in NH 3 removal at 800–950 °C. …”
Section: Post-treatments For the Thermochemical Conversion Of Biomassmentioning
confidence: 99%
“…However, the catalyst must be tolerant to other contaminants, especially sulfur impurities (e.g., H 2 S, COS) which deactivate catalysts after short operation period. , Catalyst deactivation by sulfur poisoning can be exacerbated when operating reactors at higher pressure . Common industrial Ni-based reforming catalysts as well as other nickel catalyst formulations with Zn, Ce, Co, Mo, Fe, and Ru are very effective in NH 3 removal at 800–950 °C. …”
Section: Post-treatments For the Thermochemical Conversion Of Biomassmentioning
confidence: 99%