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近日，精密测量院邓风研究员团队在沸石分子筛催化剂Lewis酸性位的研究中取得新进展，实现了对以往“NMR不可观测”骨架三配位铝物种的探测，揭示其独特的Lewis酸性特征。
沸石分子筛作为一类重要的固体酸催化剂，因其具有规整的孔道结构、可调变的酸性（酸种类、酸分布、酸量、酸强度等）而被广泛应用于石油化工、精细化工、环境化工的各种催化过程。分子筛优良的催化反应性能与其独特的酸性紧密相关。
Professor Mark E. Lewis，School of Operations Research and Information Engineering at Cornell University（图）
Professor Mark E. Lewis School of Operations Research and Information Engineering at Cornell University
2015/8/14
Professor Lewis received his undergraduate degree in Mathematics and Political Science from Eckerd College in 1992, his Master's degree in Theoretical Statistics from Florida State University in 1995,...
Professor Adrian Lewis，School of Operations Research and Information Engineering at Cornell University（图）
Professor Adrian Lewis School of Operations Research and Information Engineering at Cornell University
2015/8/14
Adrian Lewis received his B.A., M.A., and Ph.D. degrees from Cambridge University, U.K. After faculty positions at the University of Waterloo and Simon Fraser University in Canada, he joined Cornell U...
Non-adiabatic KPP fronts with an arbitrary Lewis number
Non-adiabatic KPP arbitrary Lewis number
2015/7/14
We establish existence of travelling fronts in thermo-diffusive systems of the KPP type in a shear flow with an arbitrary Lewis number and a positive heat-loss at the boundary. We then prove that the ...
Travelling fronts for the thermodiffusive system with arbitrary Lewis numbers
Travelling fronts thermodiffusive system arbitrary Lewis numbers
2015/7/14
We consider KPP-type systems in a cylinder with an arbitrary Lewis number (the ratio of thermal and material diffusivities) in the presence of a shear flow. We show that traveling fronts solutions exi...
Proving the existence of an operator that connects non-perturbed states to perturbed states, an alternative derivation of the Dalgarno-Lewis method is given.To illustrate that the Dalgarno-Lewis metho...