简介：对我国环境大气中PM2．5的污染状况以及石化行业对大气中PM2．5来源的贡献等进行了综述，对国家新颁布的《环境空气质量标准》（GB3095-2012）中对PM2．5的管理内容进行了解读。分析了在国家日益严格的大气细颗粒物防控形势下，石化行业所面临的环保工作任务进一步加重，环保资金和技术投入进一步增加的压力，提出了石化行业的应对措施：对PM2．5排放情况进行摸底调查，开展固定污染源排气中PM2．5的减排工作，加快油品质量升级步伐，推进挥发性有机物控制等应对措施。

简介：K2Ti2O5andLixK2-xTi2O5sampleswithvaryingKcontents(x=0.125,0.15,0.3),targetedonremovaloftwomainenvironmentalpollutants:PMandNOx,weresynthesizedbythesolidstatemethodusingTiO2,KNO3andLiOH·H2OasstartingmaterialsandwerecharacterizedbyX-raydiffractometry,scanningelectronmicroscopy,andBET.ThecatalyticactivityoftitanatecatalystsonPMoxidationwasevaluatedusingthetemperatureprogrammedoxidation(TPO)method.ThetestresultsshowedthattheperovskitestructureofK2Ti2O5wasstillretainedafterdopingasmallamountofLi,andthecatalyticperformanceofLixK2-xTi2O5hadbeenimprovedsignificantlycomparedwiththatofK2Ti2O5.Li0.15K1.85Ti2O5catalysthadthehighestcatalyticactivitywithanignitiontemperatureof210℃andapeaktemperatureof290℃.ThecatalyticactivityofbothK2Ti2O5andLixK2-xTi2O5underintimatecontactwashigherthanthatunderloosecontact.Whentheexhaustgasflowratewasaround100mL/min,thecatalystsamplesshowedahighestactivity.TheLidopedK2Ti2O5couldbeanexcellentcandidateforPMoxidationduetoitshighoxidationactivity,waterstability,resistancetosulfurpoisoningandeconomicaladvantages.