合肥工业大学学报(自然科学版)
閤肥工業大學學報(自然科學版)
합비공업대학학보(자연과학판)
JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE)
2015年
5期
675-680
,共6页
李云霞%胡淑恒%朱承驻%陈天虎%邹雪华%袁玉袭
李雲霞%鬍淑恆%硃承駐%陳天虎%鄒雪華%袁玉襲
리운하%호숙항%주승주%진천호%추설화%원옥습
介质阻挡放电%隐钾锰矿%八面体分子筛%等离子体
介質阻擋放電%隱鉀錳礦%八麵體分子篩%等離子體
개질조당방전%은갑맹광%팔면체분자사%등리자체
dielectric barrier discharge (DBD)%cryptomelane%octahedral molecular sieve%plasma
文章通过回流法和固相法合成了隐钾锰矿八面体分子筛OM S‐2催化剂,用BET‐N2吸脱附曲线、X射线衍射、H2‐TPR和透射电镜等方法对催化剂进行了表征。在常温常压下,将OMS‐2催化剂涂覆在等离子放电管的余辉区,甲苯先经过介质阻挡放电(dielectric barrier discharge ,DBD )得到初步降解;在余辉区, OMS‐2吸附DBD产生的长寿命活性物种和臭氧进一步催化氧化甲苯。结果表明:OMS‐2与DBD等离子体相结合可显著提高甲苯的转化效率;催化剂的合成方法对催化剂表面性质和催化氧化性能有显著影响,回流法制备的OM S‐2对甲苯转化率(η)、CO2选择性、尾气中O3产生量及能量效率(Φ)等性能的影响表现更优异。
文章通過迴流法和固相法閤成瞭隱鉀錳礦八麵體分子篩OM S‐2催化劑,用BET‐N2吸脫附麯線、X射線衍射、H2‐TPR和透射電鏡等方法對催化劑進行瞭錶徵。在常溫常壓下,將OMS‐2催化劑塗覆在等離子放電管的餘輝區,甲苯先經過介質阻擋放電(dielectric barrier discharge ,DBD )得到初步降解;在餘輝區, OMS‐2吸附DBD產生的長壽命活性物種和臭氧進一步催化氧化甲苯。結果錶明:OMS‐2與DBD等離子體相結閤可顯著提高甲苯的轉化效率;催化劑的閤成方法對催化劑錶麵性質和催化氧化性能有顯著影響,迴流法製備的OM S‐2對甲苯轉化率(η)、CO2選擇性、尾氣中O3產生量及能量效率(Φ)等性能的影響錶現更優異。
문장통과회류법화고상법합성료은갑맹광팔면체분자사OM S‐2최화제,용BET‐N2흡탈부곡선、X사선연사、H2‐TPR화투사전경등방법대최화제진행료표정。재상온상압하,장OMS‐2최화제도복재등리자방전관적여휘구,갑분선경과개질조당방전(dielectric barrier discharge ,DBD )득도초보강해;재여휘구, OMS‐2흡부DBD산생적장수명활성물충화취양진일보최화양화갑분。결과표명:OMS‐2여DBD등리자체상결합가현저제고갑분적전화효솔;최화제적합성방법대최화제표면성질화최화양화성능유현저영향,회류법제비적OM S‐2대갑분전화솔(η)、CO2선택성、미기중O3산생량급능량효솔(Φ)등성능적영향표현경우이。
Manganese oxide octahedral molecular sieve(OMS‐2) for toluene catalytic combustion is syn‐thesized by solvent‐free solid‐state and refluxing synthesis methods .BET‐N2 ,XRD , H2‐TPR and TEM techniques are applied to characterize catalysts .At room temperature and atmospheric pressure , the OMS‐2 catalyst is coated on the afterglow section of the discharge tube .After the initial degrada‐tion of toluene by dielectric barrier discharge (DBD) ,OMS‐2 can adsorb and catalyze long‐lived active species and ozone produced by DBD for further removal of toluene .The results show that OMS‐2 and DBD plasma can significantly improve the conversion efficiency of toluene .Preparation method of cat‐alyst has a significant impact on the surface properties and catalytic performance of catalyst . The OMS‐2 catalyst prepared by refluxing method has excellent performance with regard to toluene remov‐al efficiency (η) ,carbon oxide selectivity ,amounts of O3 in tail gas and energy efficiency (Φ) .