Surfactant recovery from mesoporous metal-modified materials (Sn–, Y–, Ce–, Si–MCM-41), by ultrasound assisted ion-exchange extraction and its re-use for a microwave in situ cheap and eco-friendly MCM-41 synthesisJosé González‐Rivera, C. Ferrari, Emilia Bramanti et al.|Journal of Materials Chemistry A|2014Cited by 28