Structural incorporation of carbon and nitrogen into B-SSZ-13: a spectroscopic and computational studies

摘要：

As prepared B-SSZ-13 exhibits B(OSi)4 units in Td-like geometry, upon template burning, the break of a B-O-Si bond results in B(OSi)3 units in D3h-like geometry, testified by the appearance of the IR fingerprint at 1390 cm-1 and by the evolution of the NEXAFS spectrum. Interaction with CH3OH at room temperature results in a rich reactivity with both B(OSi)3 units and adjacent SiOH species. A gentle thermal treatment at 373 K in NH3 atmosphere results in the formation of -NH2 species bonded directly to boron or to silicon, stable at ambient atmosphere. This finding is of relevance because it represents the insertion of basic species inside a zeolitic framework, and thus the achievement of a microporous molecular sieve acting as a Br鴑sted base.

作者: L. Regli C. Lamberti C. Busco A. Zecchina Prestipino K. P. Lillerud S. I.Zones S. Bordiga

作者单位: Dep. of Chemistry IFM and NIS Centre of Excellence, Via Giuria 7, I-10125 Torino, Italy DiSCAFF and NIS Centre of Excellence, Via Bovio 6, 28100 NoVara, Italy ESRF, 6 rue Jules Horowitz, BP220, F-38043, Grenoble CEDEX, France Department of Chemistry, University of Oslo, P. O. Box 1033, N-0315, Oslo, Norway ChevronTexaco Energy Research and Technology Company, 100 Chevron Way, Richmond,CA 94802, USA

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）