The effect of the nature of a modifying additive (Pt, Zn, Ga) on the activity of oxide and zeolite catalysts in ethane dehydrogenation and aromatization

Article abstract of DOI:10.1007/BF00699822

The catalytic properties of Pt, Zn, and Ga deposited on supports of various natures (Al2O3, SiO2, NaZSM, and HZSM) in the dehydrogenation and aromatization of ethane were investigated.Pt-containing catalysts are the most active in the conversion of ethane: the selectivity with respect to ethylene is 25-87percent depending on the nature of the support.In the presence of Zn- and Ga-containing catalysts the yield of ethylene is 2-3 times lower than with Pt catalysts.With HZSM modified by Pt, Zn, or Ga aromatic hydrocarbons (ArH) and methane are the main products of ethane transformation.Ga/HZSM is the most efficient catalyst of the aromatization of ethane under the conditions studied (550 deg C, 120 h^-1). - Key words: catalysis, dehydrogenation, aromatization, ethane, ethylene, modified oxides and pentasils.