Collect. Czech. Chem. Commun. 1992, 57, 2509-2514

Surface Properties and Catalytic Behaviour in Thiophene Hydrodesulfurization on Mo- and NiMo-Modified HZSM-5 Zeolites

Alla A. Spojakina and Nina G. Kostova

Institute of Kinetics and Catalysis, Bulgarian Academy of Sciences, 113 Sofia, Bulgaria


Zeolite HZSM-5 containing 1 wt.% Ni and 10 wt.% Mo has been investigated using IR spectroscopy and thiophene hydrodesulfurization (HDS). The IR spectra indicate the strong interaction of molybdenum and nickel with zeolite lattice, forming polymolybdates of different composition. The acidity of the samples is influenced by the composition and reduction treatment. The zeolite is found to exhibit shape selectivity during thiophene conversion.