화학공학소재연구정보센터
Applied Catalysis A: General, Vol.258, No.2, 195-202, 2004
Dehydroisomerization of n-pentane on SAPO-11 molecular sieves impregnated with platinum
The catalytic transformations of n-pentane were performed over a platinum-promoted silicoaluminophosphate molecular sieve (Pt/SAPO-11). The catalytic results indicate high yield for the production of pentenes with a good approach to the equilibrium distribution between the linear pentenes and iso-pentenes. The space velocity (WHSV) variation ranging between 1.6 and 4.7 h(-1), and the catalyst regeneration did not affect the catalytic behavior of the Pt/SAPO-11. On the contrary, Pt reduction at a temperature below 500degreesC, the H-2/n-pentane molar ratio increase and Pt content below 0.5 wt.%, resulted in lower yield for the production of pentenes with an increase in the production of hydrocarbons with less than five carbon atoms (undesirable side reaction). (C) 2003 Elsevier B.V. All rights reserved.