HYBRID EVENT: You can participate in person at Boston, Massachusetts, USA or Virtually from your home or work.

Stanislaw Dzwigaj

Catalysis 2019
Stanislaw Dzwigaj, Speaker at Chemical Engineering Conferences
Sorbonne-Universite-CNRS, France
Title : Design of Ta-and Nb single site zeolite catalysts for production of 1,3 butadiene from renewable sources


The metal ions well dispersed at zeolite framework are considered to be active sites of catalytic processes. Therefore, the incorporation of these metals into these materials as isolated tetrahedral sites appears to be the important challenge. We have earlier shown that the incorporation of transition metal ions into vacant T-atom sites of framework zeolite is strongly favored when, in the first step, zeolite is dealuminated by treatment with nitric acid solution and then, in the second step, the incorporation of transition metal ions involve a reaction between the cationic metal species of the precursor solution and the SiO-H groups of vacant T-atom sites created by dealumination of zeolite. During my keynote talk the design of new Ta- and Nb-single-site zeolite catalysts will be described and characterized by different physical techniques both at the macroscopic and molecular levels. The application of Ta- and Nb-single-site zeolite catalysts in production of 1,3-butadiene from renewable sources, including ethanol obtained from biomass will be discussed. This two-step postsynthesis method applied in this work allowed obtaining single sites Ta- and Nb-containing zeolite catalysts with mononuclear metal species active in above mentioned cascade reactions. Their catalytic activity strongly depends on the speciation and content of metal incorporated into zeolite structure as well as their acidity.


Professor Stanislaw Dzwigaj received his PhD degree in 1982 in Jerzy Haber Institute of Catalysis and Surface Chemistry, Krakow (Poland). After two years of postdoctoral stay at the Surface Reactivity Laboratory P. and M. Curie University (Paris) he obtained in 1990 a position of contract researcher in the same Laboratory devoted to surface reactivity in relation to catalysis phenomena. Then, in 2008 he obtained permanent position in CNRS as a researcher. On February 19, 2014 for outstanding scientific achievements he received the title of professor. His published work includes more than 150 papers published in reputable international journals.