高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (7): 880.

• 论文 • 上一篇    下一篇

REUSY-Ex的吸附性能及二次孔结构研究

鲍书林1, 付军1, 须沁华1, 陈学大2, 尹泽群2   

  1. 1. 南京大学化学系, 南京, 210008;
    2. 抚顺石油化工研究院
  • 收稿日期:1991-09-03 出版日期:1992-07-24 发布日期:1992-07-24
  • 通讯作者: 须沁华
  • 基金资助:

    国家自然科学基金资助课题

Studies on Adsorption Properties and Secondary Pore Structure of REUSY-Ex

BAO Shu-lin1, FU Jun1, XU Qin-hua1, CHEN Xue-da2, YIN Ze-qun2   

  1. 1. Department of Chemistry, Nanjing University, Nanjing, 210008;
    2. Fushun Research Institute of Petroleum and Petrochemicals, Fushun
  • Received:1991-09-03 Online:1992-07-24 Published:1992-07-24

PDF (PC)

摘要： 应用高真空重量法(分别以苯和正庚烷为吸附质)和低温N2吸附法对REUSY-Ex的吸附性能和二次孔结构进行了研究.结果表明,在水热处理过程中可产生二次孔结构,且二次孔的形成与水热处理的脱铝深度相关.稀HCl浸取REUSY不仅能浸取出位于其二次孔中的非骨架铝(EFAL)碎片,而且还能浸取出位于微孔中的EFAL. 29SiMASNMR的结果显示,稀HCl浸取后,骨架Si(OAl)的谱宽变窄,裂分效果提高,表明其化学环境单一或均匀.

关键词: 吸附性能, 二次孔, REUSY, HCl浸取

Abstract: The adsorption properties and secondary pore structure of REUSY-Ex were studied by using BETmethod (benzene and n-heptane as absorbates respectively) and N2 adsorption method.The hysteresis loops were observed in the isotherms of N2 adsorption on USY, REUSYand REUSY-Ex, which showed obviously that the secondary pores were produced in the process of hydrothermal treatment.The acid leaching could extract extra-framework aluminum species filled in the secondary pores and micropores of REUSY.The results of 29Si MAS NMR showed that the chemical surroudings of framework silicon are more uniform after acid leaching.

Key words: Adsorption, Secondary pore, REUSY, HCl leaching

TrendMD: