高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (3): 461.

• 研究简报 • 上一篇    下一篇

NiHY型沸石的酸性-还原性及其催化性能研究

傅军, 朱崇业, 李全芝   

  1. 复旦大学化学系, 上海 200433
  • 收稿日期:1994-03-23 修回日期:1994-12-15 出版日期:1995-03-24 发布日期:1995-03-24
  • 通讯作者: 李全芝
  • 作者简介:傅军,男,30岁,博士.
  • 基金资助:

    国家自然科学基金

Studies on the Acidity-Reducibility and Catalytic Properties of NiHY Zeolites

FU Jun, ZHU Chong-Ye, LI Quan-Zhi   

  1. Department of Chemistry, Fudan University, Shanghai 200433
  • Received:1994-03-23 Revised:1994-12-15 Online:1995-03-24 Published:1995-03-24

关键词: NiHY沸石, 酸性, 还原性, 甲苯转化

Abstract: The structure, acidity, reducibility of Ni2+.and the reaction of toluene conversion of NiHY zeolite have been studied by using XRD, NH3-TPD, Py-IR, TPR and toluene conversion reaction. It is found that both the number and the strength of acid sites on NiHY zeolite increase with increasing nickel content, and the number of Bronsted acid sites decrease,while the number of Lewis acid sites increase. Otherwise, there are two peaks of H2consumption, in the range of 573-673-Kand 973-1073 K, respectively, which appear in TPR spectra of NiHY zeolite, and their area increases with the increase of nickel content. The results of the reaction of toluene conversion over NiHYzeolite indicate that the products of aromatic ring opening and dernethylation increase markedly, while the product of disproportionation decreases greatly with the increase of nickel content in NiHY. Associated with the data of acidity and reducibility of Ni2+, the change of the selectivity of toluene conversion over NiHY zeolite has been discussed.

Key words: NiHY zeolite, Acidity, Reducibility, Toluene conversion

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