Influence of the Aniline Interaction with Na-AlMCM-41 and NaY Zeolite to prepare a Composite of nanowire of PANI within the Hosts

O. A. ANUNZIATA; M. B. GÓMEZ COSTA

Nessebar, Bulgaria

Simposio; Catalytic processes on advanced micro- and mesoporous materials International Symposium; 2005

EUROPACAT

In this work we, study the aniline interaction with a microporous material (NaY zeolite), compared with the aniline interaction with mesoporous material of an hexagonal packet array of channels (Na­AIMCM‑41). The adsorption of aniline on Na‑AIMCM‑41 and NaY zeolite materials synthesized by us has been characterized by thermo‑infrared spectroscopy and temperature programmed desorption (TPD). The FTIR analysis of adsorbed aniline on NaY zeolite shows the characteristic bands ascribed lo NH2 bending, two C‑C ring stretching at 1630‑1633, 1604 and 1495 cm‑1 respectively, similar lo the adsorbed aniline results on Na­AIMCM‑41 host. Mainly aniline molecules would be bound through weak interactions onto the structure of Na‑AIMCM‑41. In contrast, we suggest that, the organic molecules hold by unpaired electrons of N of the aniline amino group and NaY microstructure. lf water is co‑adsorbed two possible modes of adsorption have been identified in Na‑AIMCM‑41 whereas, the NaY zeolite shows an intense band at 1640 cm-1 which is characteristic of water adsorbed on the material. Aniline interaction with zeolite NaY is stronger than aniline‑MCM nanomaterial. The aniline adsorption on NaY zeolite and Na‑AIMCM‑41 has been evaluated in order to allow the in‑situ polymerization to generate a molecular wire. Polyaniline/MCM‑41 composite obtalned by an in‑situ polymerization technique, has been characterized by Infrared spectroscopy, N2 isotherm and dc conductivity studies.