JV De Assis, PAS Abranches, IB Braga,
OMP Zuñiga… - RSC …, 2016 - pubs.rsc.org
Two new p-sulfonic acid calix [4] arene-and p-sulfonic acid calix [6] arene-functionalized
organosilica have been synthesized using a sol–gel method and applied as heterogeneous …