简介：<正>Inthisresearchwork,threekindsofactivatedbentoniteusedassolidacidcatalystshadbeensynthesizedandstudiedonremovalofolefinsfromthereformateoil.ActivatedbentonitesampleswereanalyzedusingtheBETandpyridine-FTIRmeasurementstoinvestigatetheirphysicalandchemicalproperties.Theresultsshowedthatbothtexturalpropertiesandsurfaceacidityofthebentonitecouldaffectthecatalyticactivity.Amongthecatalystsamples,onekindofbentonitepurchasedfromHubeiwithhighsurfacearea,highporevolumeandmoreacidsitesrevealedhighactivityinremovingolefinsfromthereformate.
简介：Bytheendof1998Chinaboasted220refinerieswithatotalcrudeprocessingcapacityof262Mt/a.Theaveragerefinerysizeatthattimewas1.194Mt/a.Refinerieswithprocessingcapacityexceeding5.0Mt/aaccountedforonly21.26%,whilethecapacityofsinglerefiningunitswerealsosmallthatcouldnotconformwiththeeconomyofscale.China'srefiningindustryisfacedwithatoughtaskofstructureadjustment.
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