Pressure- and Heat-Induced Insertion of CO_2 into an Auxetic Small-Pore Zeolite

摘要

When the small-pore zeolite natrolite is compressed at ca. 1.5 GPa and heated to ca. 110 ℃ in the presence of CO_2, the unit cell volume of natrolite expands by 6.8% and ca. 12 wt % of CO_2 is contained in the expanded elliptical channels. This CO_2 insertion into natrolite is found to be reversible upon pressure release.