Fly ash as raw material for the synthesis of zeolite-encapsulated porphyrazine and metallo porphyrazine tetrapyrrolic macrocycles

In this work, free-base thioethyl-porphyrazine and its copper (II) complex were encapsulated into ze-olites during their synthesis by hydrothermal method at low incubation temperature (45 degrees C and 60 degrees C) using fly ash as raw material. The zeolite-included tetrapyrroles, H-2(OESPz)-Zeo and Cu(OESPz)-Zeo, were characterized by XRD, SEM, TG/DTA and UV-Vis. X-ray diffraction patterns show that large amount of zeolite A and sodalite formed in H-2(OESPz)-Zeo and Cu(OESPz)-Zeo, respectively whereas thermal analysis as well as UV-Vis spectroscopic investigation reveal the presence of tetrapyrroles inside newly-formed zeolitic solid matrix. The mechanism of zeolite synthesis around organic compounds to form ship in a bottle complexes is displayed by SEM analysis. (C) 2016 Elsevier Inc. All rights reserved.