Cobalt phthalocyanine encapsulated in Y zeolite: a physicochemical study

Cobalt phthalocyanine was synthesized within the cavities of Y zeolites and was characterized in all the steps of the synthesis and purification procedures by elemental analysis, Fourier transform infrared spectroscopy, UV-visible spectroscopy, X-ray photoelectron spectroscopy, surface analysis, thermogravimetric analysis, differential thermal analysis, X-ray diffraction, and conventional transmission and high-resolution electron microscopy. Besides the cobalt phthalocyanine (12% in weight), other nitrogen-containing compounds (2% in weight) are associated to the acidic sites of the zeolite and/or axially coordinated to the cobalt complex.