采用低温共溶在650～850℃内烧成制备(V-W-Ti-O)<,x>(Cu-Al-O)<,1-x>(Ce-O)<,0.03>,(x=0.9,0.8)双组分整体式低温脱硝催化剂.研究烧成温度对整体式催化剂的机械强度、开气孔率、吸水率及体积密度的影响,采用X射线衍射(XRD)、扫描电镜(SEM)、能谱分析(EDS)及傅里叶红外(FT-IR)等表征手段,分别考察催化剂的晶型、表面形貌和特征孔,定性、定量地分析催化剂的成分和官能团结构,进一步研究反应温度对脱硝催化活性的影响.结果表明,催化剂微观多孔、晶粒分散均匀,晶型复杂(包括TiO<,2>,TiVO<,4>,WV<,2>O<,6>,CeVO<,4>,Cu<,2>V<,2>O<,7>,AlV<,2>O<,4>,CuAlMnO<,4>和Cu<,1.9>V<,12>O<,29>等).700℃保温2h优化制备的(V-W-Ti-O)<,0.8>(Cu-Al-O)<,0.2>(Ce-O)<,0.03>催化剂,机械抗弯强度达到45.5 MPa,催化活性窗口为100～200℃,反应温度为150℃时,催化剂的脱硝活性达到75.9%.
採用低溫共溶在650～850℃內燒成製備(V-W-Ti-O)<,x>(Cu-Al-O)<,1-x>(Ce-O)<,0.03>,(x=0.9,0.8)雙組分整體式低溫脫硝催化劑.研究燒成溫度對整體式催化劑的機械彊度、開氣孔率、吸水率及體積密度的影響,採用X射線衍射(XRD)、掃描電鏡(SEM)、能譜分析(EDS)及傅裏葉紅外(FT-IR)等錶徵手段,分彆攷察催化劑的晶型、錶麵形貌和特徵孔,定性、定量地分析催化劑的成分和官能糰結構,進一步研究反應溫度對脫硝催化活性的影響.結果錶明,催化劑微觀多孔、晶粒分散均勻,晶型複雜(包括TiO<,2>,TiVO<,4>,WV<,2>O<,6>,CeVO<,4>,Cu<,2>V<,2>O<,7>,AlV<,2>O<,4>,CuAlMnO<,4>和Cu<,1.9>V<,12>O<,29>等).700℃保溫2h優化製備的(V-W-Ti-O)<,0.8>(Cu-Al-O)<,0.2>(Ce-O)<,0.03>催化劑,機械抗彎彊度達到45.5 MPa,催化活性窗口為100～200℃,反應溫度為150℃時,催化劑的脫硝活性達到75.9%.
채용저온공용재650～850℃내소성제비(V-W-Ti-O)<,x>(Cu-Al-O)<,1-x>(Ce-O)<,0.03>,(x=0.9,0.8)쌍조분정체식저온탈초최화제.연구소성온도대정체식최화제적궤계강도、개기공솔、흡수솔급체적밀도적영향,채용X사선연사(XRD)、소묘전경(SEM)、능보분석(EDS)급부리협홍외(FT-IR)등표정수단,분별고찰최화제적정형、표면형모화특정공,정성、정량지분석최화제적성분화관능단결구,진일보연구반응온도대탈초최화활성적영향.결과표명,최화제미관다공、정립분산균균,정형복잡(포괄TiO<,2>,TiVO<,4>,WV<,2>O<,6>,CeVO<,4>,Cu<,2>V<,2>O<,7>,AlV<,2>O<,4>,CuAlMnO<,4>화Cu<,1.9>V<,12>O<,29>등).700℃보온2h우화제비적(V-W-Ti-O)<,0.8>(Cu-Al-O)<,0.2>(Ce-O)<,0.03>최화제,궤계항만강도체도45.5 MPa,최화활성창구위100～200℃,반응온도위150℃시,최화제적탈초활성체도75.9%.
The (V-W-Ti-O)<,x>(Cu-Al-O)<,1-x>(Ce-O)<,0.03>, (x=0.9, 0.8) deNO<,x> monolithic catalysts were prepared by low temperature co-sintering (LTC) within the sintering temperature range of 650-850 ℃. The effects of sintering temperature on the mechanical strength, porosity and water absorption of the monolithic catalysts and the effect of reaction temperature on catalytic activity were investigated. The microscopic structure of the catalysts was analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and fourier infrared spectroscopic analysis (FT-IR). Results show that catalysts are porous in micro-structure and grains are distributed uniformly. The crystallographic forms are mainly TiO<,2> (futile), TiVO<,4>, WV<,2>O<,6>, CeVO<,4>, Cu<,2>V<,2>O<,7>, AlV<,2>O<,4>, CuAlMnO<,4> and Cu<,1.9>V<,12>O<,29>. For the reforming monolithic catalysts sintered at 700 ℃ for 2 h, the two-component catalysts exhibit high catalytic activities in the low temperature range of 100-200 ℃ and their bending strength reaches to 45.5 MPa. The NO conversion of (V-W-Ti-O)<,0.8>(Cu-Al-O)<,0.2>(Ce-O)<,0.03> monolithic catalyst corresponds to 75.9% at reactor temperature of 150 ℃.
