USY 分子筛表面酸性的调变及其在催化脱除芳烃中烯烃的应用OA北大核心CSCDCSTPCD
Surface acid modification of zeolite and its application in removal of olefins in aromatics
详细论述了柠檬酸对USY分子筛的改性作用，以脱除高溴指数芳烃中烯烃的反应为例对其催化活性进行了评价。实验结果表明：0.2mol/L柠檬酸溶液酸性适宜，对分子筛的骨架铝以及非骨架铝进行了有效的脱除，脱除的铝在分子筛中以无定形的非骨架铝形式存在。柠檬酸改性过程可使分子筛的介孔面积以及介孔孔容增大，这十分有利于减缓分子筛的失活速率。柠檬酸改性过程使分子筛表面的强B酸减少，强L酸增多，这有助于减缓分子筛上积炭的生成速率。经过柠檬酸改性的USY分子筛对脱除…查看全部>>
This paper discusses the citric acid treated USY zeolite in detail and the activity of the catalyst was evaluated by the reaction of olefins removal in aromatics with high bromine index. The results showed that the acidity of 0.2mol/L citric acid was suitable for treatment of USY zeolite. The Al removed from the framework of zeolite was in the form of extra-framework Al. It was found that the mesopore area and mesopore volume became larger after modification…查看全部>>
黄朝晖;刘乃旺;姚佳佳;濮鑫;施力
中国石化镇海炼化分公司，浙江镇海 315207华东理工大学石油加工研究所，上海 200237华东理工大学石油加工研究所，上海 200237华东理工大学石油加工研究所，上海 200237华东理工大学石油加工研究所，上海 200237
化学化工
催化石油脱烯烃沸石脱铝失活
catalysispetroleumolefins removalzeolitedealuminationdeactivation
《化工进展》 2016 (1)
138-144,7
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