Tungsten and rhenium as hydrogenation agents in the hydrodenitrogenation of pyridine using stacked bed catalyst systems

R. Bassi, M. Villarroel, F. J.Gil Llambías, E. Camú, PATRICIO FRANCISCO BAEZA CHANDIA

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study analyses the hydrodenitrogenation (HDN) of pyridine using a stacked bed catalyst system, composed of a first hydrogenating bed of Re/γ-Al2O3 or W/γ-Al2O3, over a second bed of Ni-Re/γ-Al2O3 (HDN bed). Using potentiometric methods, it can be seen that the Re/γ-Al2O3 shows higher acidic strength than the W/γ-Al2O3. The results show that higher activity levels are obtained working with stacked bed systems compared to the separate catalysts. These results suggest that the incorporation of the catalyst Re/γ-Al2O3 or W/γ-Al2O3 beds would favour the formation of hydrogenated intermediary products, facilitating the removal of N-containing molecules via HDN on the Ni-Re/γ-Al2O3 catalyst.

Original languageEnglish
Pages (from-to)2931-2934
Number of pages4
JournalJournal of the Chilean Chemical Society
Volume60
Issue number2
DOIs
StatePublished - 1 Jun 2015
Externally publishedYes

Keywords

  • Hydrodenitrogenation (HDN)
  • Hydrogenation
  • Pyridine
  • Stacked beds

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