天然气化工
天然氣化工
천연기화공
NATURAL GAS CHEMICAL INDUSTRY
2014年
4期
5-9,25
,共6页
景文%郭倩倩%侯亚芹%韩小金%黄张根
景文%郭倩倩%侯亞芹%韓小金%黃張根
경문%곽천천%후아근%한소금%황장근
脱硫%脱硝%低温催化剂%V2O3(SO4)2
脫硫%脫硝%低溫催化劑%V2O3(SO4)2
탈류%탈초%저온최화제%V2O3(SO4)2
DeSO2%DeNOx%low temperature catalyst%V2O3(SO4)2
将VOSO4担载到活性炭AC上制备了一种新型钒基催化剂，考察了其脱硫脱硝活性。结果表明制备的催化剂具有很高的低温活性。表征研究发现催化剂的活性组分并非V2O5，而应是V2O3(SO4)2。通过研究脱硫后V2O5/AC上含硫物种的热分解行为发现，脱硫反应中V2O5转化为V2O3(SO4)2，V2O5/AC用于脱硝时良好的抗硫性可能源于V2O3(SO4)2的低温催化活性。
將VOSO4擔載到活性炭AC上製備瞭一種新型釩基催化劑，攷察瞭其脫硫脫硝活性。結果錶明製備的催化劑具有很高的低溫活性。錶徵研究髮現催化劑的活性組分併非V2O5，而應是V2O3(SO4)2。通過研究脫硫後V2O5/AC上含硫物種的熱分解行為髮現，脫硫反應中V2O5轉化為V2O3(SO4)2，V2O5/AC用于脫硝時良好的抗硫性可能源于V2O3(SO4)2的低溫催化活性。
장VOSO4담재도활성탄AC상제비료일충신형범기최화제，고찰료기탈류탈초활성。결과표명제비적최화제구유흔고적저온활성。표정연구발현최화제적활성조분병비V2O5，이응시V2O3(SO4)2。통과연구탈류후V2O5/AC상함류물충적열분해행위발현，탈류반응중V2O5전화위V2O3(SO4)2，V2O5/AC용우탈초시량호적항류성가능원우V2O3(SO4)2적저온최화활성。
A novel vanadium-based catalyst was prepared by depositing VOSO4 on activated carbon (AC). The catalytic activity of the catalyst for SO2 and NO removal was investigated, and the results showed that it had excellent low-temperature activity. Characterization results of the catalyst indicated that its active component should be V2O3(SO4)2 rather than V2O5. By investigating the decomposition behavior of sulfur-containing species formed on V2O5/AC, it was found that the V2O5 was transformed into V2O3(SO4)2 in presence of SO2, indicating that the promising SO2-resistant capability of V2O5/AC in SCR reaction might result from the catalytic activity of V2O3(SO4)2 at low temperatures.
