Amorphous microporous molecular sieves studied by laserpolarized 129Xe NMR spectroscopy

摘要：

Crystalline zeolites, ZSM-12 and ITQ-21, and their amorphous precursors presenting the same porosity, have been studied by hyperpolarized 129Xe NMR spectroscopy of adsorbed Xe. The higher chemical shifts and the smaller chemical shift variations with Xe concentration observed for the amorphous compared to the crystalline materials show that the pores exhibit a surface roughness responsible for a stronger Xe-surface interaction that occurs at the expense of Xe-Xe interaction inside the micropores.

作者: M.-A. Springuel-Huet A. Vidal Moya M. J. Díaz-Cabanas A. Corma A.Gédéon

作者单位: Laboratoire des Systèmes Interfaciaux à lEchelle Nanométrique (SIEN), Université P. Et M.Curie, 4 p Instituto de Tecnología Química, UPV-CSIC, Universidad Politécnica de Valencia, Avenida de los Naran

会议类型: 国际会议

会议名称: 第15届国际分子筛大会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-12（万方平台首次上网日期，不代表论文的发表时间）