燃料化学学报
燃料化學學報
연료화학학보
JOURNAL OF FUEL CHEMISTRY AND TECHNOLOGY
2014年
11期
1365-1371
,共7页
王艳莉%李晓晓%詹亮%李翠%乔文明%凌立成
王豔莉%李曉曉%詹亮%李翠%喬文明%凌立成
왕염리%리효효%첨량%리취%교문명%릉립성
蜂窝状活性炭%MnOx-CeO2%选择性催化还原%NO%助剂
蜂窩狀活性炭%MnOx-CeO2%選擇性催化還原%NO%助劑
봉와상활성탄%MnOx-CeO2%선택성최화환원%NO%조제
ca tivated carbon honeycomb%MnOx-CeO2%s elective catalytic rde ucit on%NO removla%additive
考察了铁、锡助剂对蜂窝状活性炭担载MnOx-CeO2( MnOx-CeO2/ACH)催化剂的低温脱硝活性及抗硫性能的影响。结果表明,添加FeOx 助剂,有利于改善MnOx和CeO2在ACH载体表面的分散性,使得催化剂的脱硝活性在80~200℃随反应温度的升高而增加,且抗SO2毒化性能提高;SnOx 助剂的添加,使得催化剂在较高温区仍具有较高脱硝活性,并表现出良好的抗SO2毒化性能,在250℃时NO转化率由无SO2条件下的98.6%略降至SO2存在时(700 min)的87.8%。
攷察瞭鐵、錫助劑對蜂窩狀活性炭擔載MnOx-CeO2( MnOx-CeO2/ACH)催化劑的低溫脫硝活性及抗硫性能的影響。結果錶明,添加FeOx 助劑,有利于改善MnOx和CeO2在ACH載體錶麵的分散性,使得催化劑的脫硝活性在80~200℃隨反應溫度的升高而增加,且抗SO2毒化性能提高;SnOx 助劑的添加,使得催化劑在較高溫區仍具有較高脫硝活性,併錶現齣良好的抗SO2毒化性能,在250℃時NO轉化率由無SO2條件下的98.6%略降至SO2存在時(700 min)的87.8%。
고찰료철、석조제대봉와상활성탄담재MnOx-CeO2( MnOx-CeO2/ACH)최화제적저온탈초활성급항류성능적영향。결과표명,첨가FeOx 조제,유리우개선MnOx화CeO2재ACH재체표면적분산성,사득최화제적탈초활성재80~200℃수반응온도적승고이증가,차항SO2독화성능제고;SnOx 조제적첨가,사득최화제재교고온구잉구유교고탈초활성,병표현출량호적항SO2독화성능,재250℃시NO전화솔유무SO2조건하적98.6%략강지SO2존재시(700 min)적87.8%。
The effect of FeOx and SnOx additive s on the catalytic performa nce of MnOx-CeO2 supported on atc ivated carbon honeycomb ( MnOx-CeO 2/ACH ) in NO removal ta low tempre atuer was investigated.The reus lts ni dicated that the addition of FeOx can improve the distribution of manganese and cerium oxides on the ACH support and enhance the resistance to SO2 poisoning in NO er moval;the actvi ity of FeOx-modified MnOx-CeO2/ACH inrc eases wti h thei ncreasing reaction temperatur e from 80 ℃ to 200 ℃.Meanwhile, the MnOx-CeO2/ACH catalyst modified with SnOx exhibits high NO removal activity and good resistance to SO2 poisoning at relatively high tem peratures; over SnOx-modified MnOx-CeO2/ACH at 250 ℃, NO conversion decreases slightly from98.6%in teh absne ce of SO2 to 87.8%in 700 mni upon ht e introduction of SO2 int he feed.