TY - JOUR
T1 - Selective adsorption of nitrogen compounds using silica-based mesoporous materials as a pretreatment for deep hydrodesulfurization
AU - García-Martínez, J. C.
AU - González Uribe, H. A.
AU - González-Brambila, M. M.
AU - Colín-Luna, J. A.
AU - Escobedo-García, Y. E.
AU - López-Gaona, A.
AU - Alvarado-Perea, L.
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - The adsorption of quinoline (Q) and dibenzothiophene (DBT)—model compounds for nitrogen and sulfur in diesel fuels—over mesoporous SBA-15, SBA-16, and MCM-41 was studied. The Langmuir model was suitable for describing the adsorption of nitrogen-containing compounds from a simulated diesel fuel. A pseudo-second-order kinetic model better fitted the Q adsorption data than a first-order rate model when describing the adsorption rates on all materials. Comparison of the adsorption of Q and DBT confirmed that the nitrogen compound was selectively removed, and MCM-41 was found to have better adsorption characteristics than SBA-15 and SBA-16. DBT was not adsorbed in any experiment. The adsorbents were characterized using N2-physisorption, powder X-ray diffraction, and high-resolution transmission electron microscopy to describe the morphologies of the adsorbents. The characterization results revealed that the specific area and the structure of the adsorbent are key parameters required to explain the adsorption process.
AB - The adsorption of quinoline (Q) and dibenzothiophene (DBT)—model compounds for nitrogen and sulfur in diesel fuels—over mesoporous SBA-15, SBA-16, and MCM-41 was studied. The Langmuir model was suitable for describing the adsorption of nitrogen-containing compounds from a simulated diesel fuel. A pseudo-second-order kinetic model better fitted the Q adsorption data than a first-order rate model when describing the adsorption rates on all materials. Comparison of the adsorption of Q and DBT confirmed that the nitrogen compound was selectively removed, and MCM-41 was found to have better adsorption characteristics than SBA-15 and SBA-16. DBT was not adsorbed in any experiment. The adsorbents were characterized using N2-physisorption, powder X-ray diffraction, and high-resolution transmission electron microscopy to describe the morphologies of the adsorbents. The characterization results revealed that the specific area and the structure of the adsorbent are key parameters required to explain the adsorption process.
KW - Adsorption
KW - Diesel
KW - Hydrodesulfurization
KW - Langmuir
KW - Ultra-low sulfur diesel
UR - http://www.scopus.com/inward/record.url?scp=85032580648&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2017.10.037
DO - 10.1016/j.cattod.2017.10.037
M3 - Artículo
SN - 0920-5861
VL - 305
SP - 40
EP - 48
JO - Catalysis Today
JF - Catalysis Today
ER -