10.1021/acs.energyfuels.7b01928.s001
Luana
V. Baia
Luana
V.
Baia
Wallace C. Souza
Wallace C.
Souza
Ricardo J. F. de Souza
Ricardo J. F.
de Souza
Cláudia O. Veloso
Cláudia O.
Veloso
Sandra S. X. Chiaro
Sandra
S. X. Chiaro
Marco Antonio G. Figueiredo
Marco Antonio G.
Figueiredo
Removal of Sulfur and Nitrogen Compounds from Diesel
Oil by Adsorption Using Clays as Adsorbents
American Chemical Society
2017
sulfur compounds content
removal
nitrogen compounds
Adsorbents Stringent specifications
Clay B
Br ønsted acid sites
clay
2017-10-05 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Removal_of_Sulfur_and_Nitrogen_Compounds_from_Diesel_Oil_by_Adsorption_Using_Clays_as_Adsorbents/5521606
Stringent specifications
for sulfur compounds content and the need
to use oils with large amount of nitrogen compounds are challenges
for fuel producers. Adsorption is an alternative process to remove
sulfur and nitrogen compounds and clays are promising adsorbents for
this removal. In this work, the adsorption performance of different
commercial claysClay A (attapulgite), Clay B (bentonite),
and Clay C (bentonite)for the removal of sulfur and nitrogen
compounds from a real diesel stream was studied through kinetic and
isothermal experiments. The bentonite clays showed the best adsorptive
capacity for the removal of sulfur and nitrogen compounds, probably
due to the presence of Brønsted acid sites. The highest adsorption
capacity was observed for Clay B: 0.174 mol kg<sup>–1</sup> for sulfur compounds and 0.127 mol kg<sup>–1</sup> for nitrogen
compounds. Clay A was more selective to the removal of nitrogen compounds.
Equilibrium data showed that adsorbate–absorbate and adsorbate–surface
interactions predominate for sulfur and nitrogen compounds, respectively,
for Clay A and Clay B.