磷改性的Hβ沸石表面酸性的研究  

Studies on the Surface Acid Properties of Phosphorus-Modified Hβ-Zeolite

作　　者：王晓红[1] 赵谦[1] 李萌[1] 姜廷顺[1] 

机构地区：[1]江苏大学化学化工学院,江苏镇江市212013

出　　处：《矿业研究与开发》2006年第6期69-70,共2页Mining Research and Development

基　　金：江苏省教育厅自然科学基金资助(04KJB30040)

摘　　要：用离子交换法制备Hβ沸石,然后再用浸渍法制备不同磷含量的Hβ沸石样品,通过XRD、NH3-TPD和FT-IR等手段表征了样品的晶相、酸量及酸性。结果表明,在磷改性的Hβ沸石样品中,磷含量为1%时其酸量略有增加,而磷含量大于1%的Hβ样品其结晶度、酸量下降,酸强度亦下降。A series of Hβ -zeolite samples were prepared by ionexchange at different calcination temperatures, and then the Hβ - zeolite samples with different phosphorus content were prepared by impregnation method. The crystal phase, surface acid amount and acid properties of the modified samples were charac- terized by means of XRD, Fr - IR and NH3 - TPD. The experimental results showed that when phosphorus content is 1%, the surface acid amount of the prepared samples increased somewhat;however,when phosphorus content is over 1% ,not only the crystallinity and the surface acid amount of the prepared samples but also the acid density decreased with increasing of phosphorus content.

关 键 词：HΒ沸石 改性 表征 表面酸性 

分 类 号：O643[理学—物理化学]