Ag-Cu/Al2O3 복합촉매를 이용한 저온에서의 NH3 산화

• 영문명: NH3 oxidation using Ag-Cu/Al2O3 composite catalyst at low temperature
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 임윤희(Yun-Hui Lim) 이주열(Ju-Yeol Lee) 박병현(Byung-Hyun Park)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제31권 제2호, 313~319쪽, 전체 7쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2014.06.30

영문 초록

This study was performed to obtain high conversion efficiency of NH3 and minimize generation of nitrogen oxides using metal-supported catalyst with Ag : Cu ratio. Through structural analysis of the prepared catalyst with Ag : Cu ratio ((10-x)Ag–xCu (0≤ x ≤6)), it was confirmed that the specific surface area was decrease with increasing metal content. A prepared catalysts showed Type Ⅱ adsorption isotherms regardless of the ratio Ag : Cu of metal content, and crystalline phase of Ag2O, CuO and CuAl2O was observed by XRD analysis. In the low temperature(150∼200 ℃), a conversion efficiency of AC_10 recorded the highest(98%), whereas AC_5 (Ag : Cu = 5 : 5) also showed good conversion efficiency(93.8%). However, in the high temperature range, the amounts of by-products(NO, NO2) formed with AC_5 was lower than that of AC_10. From these results, It is concluded that AC_5 is more environmentally and economically suitable.

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References

키워드

Selective catalyst oxidation NH3 Ag/Cu/Al2O3 catalyst Low temperature