Effect of calcination temperature of FeMo/Zn-Hydroxyapatites catalysts on the thiophene hydrodesulfuration reaction
Keywords:
Hydrotreating, thiophene, hydroxyapatites, calcination temperatureAbstract
Zn-hydroxiapatites supports were synthesized with a variable Zn content (0 - 15% mol Zn). Then, they were
impregnated with Mo, as phase active, and Fe, as the promoter. Solids were subsequently divided into two
parts: one portion was calcined at 400 oC and another one at 800 oC for 4 h. All samples were characterized
using various physico-chemical techniques such as: X-ray diffraction, (XRD), Fourier transformed
infrared spectroscopy, scanning electron microscopy, temperature programmed reduction and specific
area measurements by BET method. XRD determined identified phases such as: Fe2Mo3.9O14.710.5H2O,
Fe2(MoO4)3, Ca19Zn2 (PO4)14 and CaMoO4 (scheelite) for both calcination temperatures for both
calcination temperatures. Finally, catalytic precursors were used in the hydrodesulfuration reaction of
thiophene, obtaining low catalytic activity values for solids calcined at 800 oC; possibly due to the low
surface areas and the low presence of octahedral molybdenum for these solids.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Revista Ingeniare
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain copyright of their work and grant the journal the right of first publication under the Creative Commons CC-BY Attribution License, which permits unrestricted use, distribution, and reproduction provided the original authorship and the journal’s first publication are acknowledged.
