US-Switzerland Cooperative Research: Structural Analyses ofZeolites, Molecular Sieves and Related Materials

曼哈顿学院的理查德·M·基什内尔博士和瑞士苏黎世结晶研究所的沃尔特·M·迈耶教授就“沸石、分子筛和相关材料的结构分析”提出的这项建议，是由美国国家科学基金会和瑞士国家科学基金会根据美国-瑞士合作科学计划共同批准的。利用目前可用的技术组合，解决一种新分子筛的结构通常需要数年时间。一种新的方法(Bennett/Schomaker方法)已经成功地解决了四种未知分子筛的结构问题。然而，这种方法需要扩展到适用于各种化学组成的各种骨架材料的所有空间群。这项提议将把专家聚集在一起，他们可以共同开发出一个更强大、更有用的计划。具体地说，两种新型磷酸铝骨架材料(Kappa和AlPO4-11)的研究人员将通过X射线粉末衍射数据进行表征。对Kappa结构的了解将使类似拓扑的化学取代骨架的比较成为可能。表征良好的AlPO4-11结构将提供磷酸铝骨架与用于合成该材料的有机模板之间相互作用的细节。此外，由于已知的磷酸铝骨架材料的表征良好的结构不多，为了了解这一具有巨大商业应用潜力的新材料家族(包括化学取代材料)的性能，人们对每一种新结构都很感兴趣。

This proposal on "Structural Analyses of Zeolites, Molecular Sieves and Related Materials" between Dr. Richard M. Kirchner of Manhattan College and Prof. Walter M. Meier of the Institute for Crystallography, Zurich, Switzerland, is jointly approved by NSF and the Swiss National Science Foundation under the U.S.-Switzerland Cooperative Science Program. Solving the structure of a new molecular sieve often takes many years using a combination of presently available techniques. A new approach (the Bennett/Schomaker method) has already been successful in solving the structures of four unknown molecular sieves. However, this method needs to be expanded to work in all space groups for a variety of framework materials of various chemical composition. This proposal would bring together experts who together could develop a more powerful and useful program. Specifically, the researchers of two new aluminophosphate framework materials (KAPPA and ALPO4-11) will be characterized from X-ray powder diffraction data. Knowledge of the KAPPA structure will enable a comparison of chemically substituted frameworks of similar topology to be made. A well characterized structure of ALPO4-11 would provide details of the interaction between the aluminophosphate framework and the organic template used to synthesize this material. In addition, since not many well characterized structures of aluminophosphate framework materials are known, each new structure is of considerable interest in order to understand the properties of this new family of materials (including chemically substituted ones) that have great potential for commercial application.