石油炼制与化工 ›› 2015, Vol. 46 ›› Issue (6): 30-35.
• 催化剂 • 上一篇 下一篇
王成强,欧阳颖,罗一斌
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摘要： 通过有机酸对β分子筛进行脱铝改性，采用XRD，BET，NH3-TPD，FTIR，27Al MAS NMR等手段对酸脱铝β分子筛样品进行表征，以乙基环己烷（ECH）为模型化合物考察环烷烃开环反应的性能。结果表明:随脱铝率的增加，β分子筛的相对结晶度、酸量、比表面积等均呈现先增加后降低的趋势；反应活性、丙烯收率及丙烯选择性也出现先增加后降低的趋势，但乙烯收率变化幅度较小，当脱铝率为41.7%时ECH开环反应性能最优。
Abstract: β zeolite was modified by dealumination with organic acid, and the physicochemical properties of the samples were characterized by XRD, BET, and NH3-TPD，27Al MASNMR，FTIR. Ethyl cyclohexane was used as a model compound to investigate the effect of modification on the performance of β zeolite for cycloparaffin ring-opening reaction. The results show that with increase of the dealumination degree, the crystallinity, specific surface area and acidic amount of the dealuminated β zeolites rise first and then decrease. The conversion，propylene yield and selectivity show the same trend. But little change of ethylene yield is observed. ECH ring-opening reaction reaches the optimal extent at 41.7% dealumination.
王成强 欧阳颖 罗一斌. 有机酸脱铝对β分子筛环烷烃开环反应性能的影响[J]. 石油炼制与化工, 2015, 46(6): 30-35.
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