PKU-3: An HCl-Inclusive Aluminoborate for Strecker Reaction Solved by Combining RED and PXRD

A novel microporous aluminoborate,
denoted as PKU-3, was prepared by the boric acid flux method. The
structure of PKU-3 was determined by combining the rotation electron
diffraction and synchrotron powder X-ray diffraction data with well
resolved ordered Cl– ions in the channel. Composition
and crystal structure analysis showed that there are both proton and
chlorine ions in the channels. Part of these protons and chlorine
ions can be washed away by basic solutions to activate the open pores.
The washed PKU-3 can be used as an efficient catalyst in the Strecker
reaction with yields higher than 90%.