摘要
采用嫁接法制备了Al-SBA-15介孔分子筛,并对硅铝比、焙烧温度等影响产物的制备因素进行了考察。通过XRD,BET,FT-IR,NH3-TPD等分析手段对所得样品进行了分析。将所得产物Al-SBA-15与SBA-15在相同条件下进行了吸附脱除碱性氮化物对比实验。结果表明:Al-SBA-15保留了SBA-15高度有序的二维六方介孔结构。AlSBA-15具有比SBA-15更好的吸附脱氮能力,在焙烧温度550℃、硅铝比(原子比)为50的条件下,Al-SBA-15(50)介孔分子筛最高脱氮率为68.02%,此时饱和吸附量为30.6 mg/g。
Al-SBA-15 mesoporous zeolite was synthesized by grafting , and the factors that affect the product were investigated, such as ratio of silica to alumina , calcination temperature, etc.The Al-SBA-15 mesoporous zeolite was characterized by XRD , BET, FT-IR, NH3-TPD.The comparative experiments on adsorptive removal of basic nitrogen compound were performed with the obtained product Al-SBA-15 and SBA-15 under the same conditions . The results show that Al-SBA-15 retains the SBA-15 highly-ordered two-dimensional hexagonal mesostructure .Al-SBA-15 has the better nitrogen adsorption capacity than SBA-15 .When calcination temperature is 550 ℃and the atomic ratio of silica to alumina is 50,the denitrification rate of Al-SBA-15 can reach the highest 68.02%,with the adsorption capacity of 30 .6 mg/g.
出处
《化学工程》
CAS
CSCD
北大核心
2014年第12期30-33,38,共5页
Chemical Engineering(China)
