CAJ | 학술논문

用炼锌水淬渣废物为原料,采用半湿法浸渍和干法老化结合的方法制备了SO2－4/水淬渣固体酸催化剂,考察了浸渍浓度、焙烧温度、老化温度等制备条件对其催化油酸和甲醇酯化制备生物柴油催化性能的影响,并对SO2－4/水淬渣和硫酸处理水淬渣絮凝体烘干物进行N H 3-TPD 酸性测试和比表面积分析。实验结果表明,制备条件对 SO2－4/水淬渣固体酸的催化性能有很大的影响,将最佳制备条件下得到的催化剂用于油酸和甲醇的酯化反应,在催化剂用量18％,醇油比15∶1,温度120℃,反应时间8 h的反应条件下,酯化率可达90％以上,且该催化剂重复使用4次后,酯化率仍在50％以上,经 H2 SO4活化后其催化活性又可恢复。
용련자수쉬사폐물위원료,채용반습법침지화간법노화결합적방법제비료SO2－4/수쉬사고체산최화제,고찰료침지농도、배소온도、노화온도등제비조건대기최화유산화갑순지화제비생물시유최화성능적영향,병대SO2－4/수쉬사화류산처리수쉬사서응체홍간물진행N H 3-TPD 산성측시화비표면적분석。실험결과표명,제비조건대 SO2－4/수쉬사고체산적최화성능유흔대적영향,장최가제비조건하득도적최화제용우유산화갑순적지화반응,재최화제용량18％,순유비15∶1,온도120℃,반응시간8 h적반응조건하,지화솔가체90％이상,차해최화제중복사용4차후,지화솔잉재50％이상,경 H2 SO4활화후기최화활성우가회복。
With waste water quenched slag as raw material,the paper aimed to prepare SO2-4 /water quenched slag solid acid catalyst with the combined method of semi-wet impregnation and dry impregnation.The affect of factors such as impregnation concentration,calcinations temperature,aging temperature on the property of biodiesel prepared by catalyzing oleic acid and methanol is analyzed.The NH3-TPD test and the specific surface area analysis were also conducted on SO2-4 /water quenched slag and the drying sulfuric acid treated slag floccu-lation.And the experimental result showed that the preparation conditions have certain affect on the catalyst performance of SO2-4 /water quenched slag solid acid.Using the catalyst prepared under the optimum conditions for the esterification of oleic acid and methanol,with the dosage of catalyst being 1 8%,the ration between methanol and oleic acid 15∶1,reaction temperature 120 ℃ and reaction time 3 hours,an esterification rate of>90% could be reached,And the catalyst after repeated use 4 times,esterification rate was over 50%,after H2 SO4 activation its catalytic activity could be restored.