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Mesoporous zirconium–silica nanocomposite modified with heteropoly tungstophosphoric acid catalyst for ultra‐deep oxidative desulfurization
Author(s) -
Yuzbashi S.,
Mousazadeh M.H.,
Ramezani N.,
Sid Kalal H.,
Sabour B.
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5326
Subject(s) - flue gas desulfurization , chemistry , catalysis , dibenzothiophene , leaching (pedology) , phosphotungstic acid , mesoporous material , zirconium , mesoporous silica , hydrodesulfurization , polyoxometalate , sulfur , inorganic chemistry , nuclear chemistry , chemical engineering , organic chemistry , environmental science , soil science , engineering , soil water
An adsorbent catalyst was proposed to reduce the leaching of active species of the catalyst and enhance the kinetics of the oxidative desulfurization (ODS) reaction of dibenzothiophene (DBT) from model diesel fuel. By loading phosphotungstic acid (HPW) species onto a zirconium‐modified hexagonal mesoporous silica (Zr‐HMS), a novel catalyst was synthesized and utilized for the ODS process. An ultrafast ODS kinetics was specifically identified using 20%HPW/Zr‐HMS as catalyst. Within 30 min, more than 95% of the 350 ppm DBT content of the model fuel was oxidized by H 2 O 2 . The synthesized catalyst retained its sulfur removal ability even after five subsequent ODS reactions and the leaching of HPW species was found to be suppressed successfully. Overall, this new reusable catalyst provided an alternative for highly efficient ultra‐deep desulfurization process.