化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2015年
8期
3014-3021
,共8页
郑丽萍%袁振乐%夏水鑫%陈平%侯昭胤
鄭麗萍%袁振樂%夏水鑫%陳平%侯昭胤
정려평%원진악%하수흠%진평%후소윤
生物柴油%甘油%氢解%1,2-丙二醇%固体碱
生物柴油%甘油%氫解%1,2-丙二醇%固體堿
생물시유%감유%경해%1,2-병이순%고체감
biodiesel%glycerol%hydrogenolysis%1,2-propanediol%solid-base
用浸渍-燃烧法制备了固体超强碱MgO-CaO和MgO-SrO负载的高分散铜基催化剂，并将其用于甘油氢解制备1,2-丙二醇的反应。N2吸附、X射线衍射、透射电子显微镜、H2程序升温还原和N2O氧化吸附及CO2程序升温脱附等表征实验结果显示：Cu粒子均分散于Cu/MgO-CaO（或者Cu/MgO-SrO）催化剂的表面；与Cu/MgO相比，Cu/MgO-CaO和Cu/MgO-SrO具有更强的碱性，可以加速甘油的转化。上述结果表明，甘油氢解反应中铜催化剂的活性随碱性的增强而增加。
用浸漬-燃燒法製備瞭固體超彊堿MgO-CaO和MgO-SrO負載的高分散銅基催化劑，併將其用于甘油氫解製備1,2-丙二醇的反應。N2吸附、X射線衍射、透射電子顯微鏡、H2程序升溫還原和N2O氧化吸附及CO2程序升溫脫附等錶徵實驗結果顯示：Cu粒子均分散于Cu/MgO-CaO（或者Cu/MgO-SrO）催化劑的錶麵；與Cu/MgO相比，Cu/MgO-CaO和Cu/MgO-SrO具有更彊的堿性，可以加速甘油的轉化。上述結果錶明，甘油氫解反應中銅催化劑的活性隨堿性的增彊而增加。
용침지-연소법제비료고체초강감MgO-CaO화MgO-SrO부재적고분산동기최화제，병장기용우감유경해제비1,2-병이순적반응。N2흡부、X사선연사、투사전자현미경、H2정서승온환원화N2O양화흡부급CO2정서승온탈부등표정실험결과현시：Cu입자균분산우Cu/MgO-CaO（혹자Cu/MgO-SrO）최화제적표면；여Cu/MgO상비，Cu/MgO-CaO화Cu/MgO-SrO구유경강적감성，가이가속감유적전화。상술결과표명，감유경해반응중동최화제적활성수감성적증강이증가。
Highly dispersed copper nanoparticles supported on combined alkaline-earth metal oxides MgO-CaO and MgO-SrO were synthesized by impregnation-combustion method and used for hydrogenolysis of glycerol. The nanoparticles were characterized using N2-adsorption, X-ray diffraction, transmission electronic microscope, temperature-programmed reduction with H2, dissociative N2O adsorption and CO2 temperature-programmed desorption. The results revealed that Cu particles dispersed highly on the surface of Cu/MgO-CaO and Cu/MgO-SrO catalyst. The enhanced alkalinity of Cu/MgO-CaO and Cu/MgO-SrO accelerated the conversion of glycerol compared to Cu/MgO. It was concluded that the activity of Cu-based catalyst increased with its alkalinity.
