中文摘要：

主要研究了以哌啶为模板剂,深度脱铁的Fe-YNU-1分子筛为硅源,采用后合成法制备Al-YNU-1分子筛及其形成机理. 通过考察铝含量、水含量、晶化时间和酸处理条件对形成Al-YNU-1分子筛结构的影响规律,发现Al-YNU-1分子筛骨架中的Al含量较以深度脱硼的B-MWW为硅源得到的样品提高了近一倍. 结果表明,Si源中存在大量晶格缺陷位、酸处理脱除Al-MWW层状前驱中大部分模板剂分子与大量骨架Al是形成Al-YNU-1分子筛的必要条件.

英文摘要：

Al‐YNU‐1 molecular sieve was synthesized through the post‐synthesis method from highly acid‐treated Fe‐YNU‐1 in the presence of piperidine.The effects of silica sources,structure‐directing agents,composition of raw materials,and crystallization conditions on the structure and Al content of Al‐YNU‐1 were investigated.Optimizing the Al and H2O amounts in the synthesis mixture,as well as the crystallization time and the acid treatment conditions applied to the as‐synthesized lamellar precursors,produced a large increase in the content of Al in the Al‐YNU‐1 framework,to nearly double that of a sample prepared using deborated MWW as the silica source.To form Al‐YNU‐1,it is essential to remove most of the template molecules and framework Al species from the lamellar Al‐MWW precursor by acid treatment,and to have a large number of defect sites within the Si source.