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1、第43卷第1期燃料化學(xué)學(xué)報(bào)Vo1．43NO．12015年1月JournalofFuelChemistryandTechnologyJan．2O15文章編號(hào)：0253—2409(2015)01-0116-06苯并噻吩在酸改性NaY分子篩上的吸附孫慧穎，甘海軍，孫林平(長(zhǎng)春工業(yè)大學(xué)化工學(xué)院，吉林長(zhǎng)春130012)摘要：以NaY分子篩為母體，通過(guò)檸檬酸、磷酸改性分別得到吸附劑NaY—C和NaY—P。采用SEM、XRD、XRF、N2物理吸附及NH一TPD表征可知，檸檬酸改性后得到的NaY·C吸附劑介孔表面積增加，分子篩骨架結(jié)構(gòu)保持不變。同時(shí)，磷酸改性使得Na
2、Y分子篩表面弱酸量減少?gòu)?qiáng)酸量增加，改性后所得吸附劑NaY—P的強(qiáng)酸量大于NaY—C。吸附實(shí)驗(yàn)表明，NaY—C和NaY—P均可完全脫除模擬油品中的苯并噻吩，同時(shí)NaY—C吸附劑對(duì)0柴油的脫硫能力優(yōu)于NaY—P吸附劑。再生實(shí)驗(yàn)中NaY—C和NaY—P吸附劑對(duì)模擬油品的脫硫率由第一次的100％分別下降至第6次的91．97％和85．96％。由此可知，檸檬酸改性NaY分子篩所得NaY—C吸附劑的脫硫能力優(yōu)于NaY—P，原因是吸附劑上的介孔更易于發(fā)生吸附脫硫。關(guān)鍵詞：NaY分子篩；苯并噻吩；檸檬酸；磷酸；吸附；再生中圖分類號(hào)：0643文獻(xiàn)標(biāo)識(shí)碼：AAdsorpt
3、ionofbenzothiopheneoveracidmodifiedNaYzeolitesSUNHui．ying．GANHai-jun．SUNLin—ping(SchoolofChemicalEngineering，ChangchunUniversityofTechnology，Changchun130012，China)Abstract：NaY．CandNaY—PadsorbentsweresuccessfullyobtainedthroughmodifyingparentNaYzeolitewitllcitricacidandphosphate
4、acid，respectively．Theobtainedadsorbentswerecharacterizedbyscanningelectronmicroscope，X—raydiffraction，X—rayfluorescence，N2sorptionandtemperatureprogrammeddesorptionofNH3．ThemesoporesurfaceareaoftheNaY．CadsorbentwasincreasedwhentheparentNaYzeolitewasmodifiedbycitricacid．withpres
5、ervinghezeoliteskeletalstructure．Meanwhile，thedecreasedweakacidandincreasedstrongacidcontentwereobservedinNaYzeolitemodifiedwithphosphateacidaqueoussolutionandtheamountofstrongacidsitesintheNaY．PadsorbentwasmorethanintheNaY．Cadsorbent．Theadsorptiondesulfurizationresultsshowedth
6、attheNaY．CadsorbentexhibitedmuchhigherdesulfurizationactivitythantheNaY．PadsorbentintheNo．0dieseloil，althoughallbenzothiopheneinmodeldieselwasremovedoverboth．Inregenerationexperiment．thebenzothiopheneremovalofmodeldieseloildecreasedfrom100％to91．97％and85．96％aftersixregenerations
7、overNaYCandNaY．Padsorbents．respectively．Therefore，theNaY—Cadsorbentpossessedbetterdesulfurizationperformance，possiblybecausethemesoporeoftheadsorbentisbeneficialtotheadsorptiondesulfufization．Keywords：NaYzeolites；benzothiophene；citricacid；phosphateacid；adsorption；regeneration選擇
8、性吸附脫硫因具備低能耗、設(shè)備操作簡(jiǎn)單、劑再生眭能不穩(wěn)定且操作步驟繁瑣¨”。選擇性高等優(yōu)點(diǎn)日益受到人們關(guān)注娟J
