2020
DOI: 10.3390/catal10020259
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Abstract: Sulfonated carbon-based catalysts have been identified as promising solid acid catalysts, and petroleum coke (petcoke), a byproduct of the oil industry, is a potential feedstock for these catalysts. In this study, sulfur-containing (6.5 wt%) petcoke was used as a precursor for these catalysts through direct functionalization (i.e., without an activation step) with nitric acid to access the inherent sulfur. Catalysts were also prepared using sulfuric acid and a mixture of nitric and sulfuric acid (1:3 vol ratio… Show more

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Cited by 7 publications
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“…Further thermodynamic analysis based on the Benson group contribution method illustrated that thiophene tended to generate an equal amount of sulfate and sulfide but more SO 2 than H 2 S, and sulfoxide tended to generate more SO 2 than H 2 S and more sulfate than sulfide. Except for KOH activation, the inherent sulfur of petroleum coke also could be accessed by nitric acid functionalization [ 54 ]. The proposed reaction pathway for the oxidation of dibenzothiophene [ 56 ] was seen that sulfur in the thiophene groups could be oxidized to sulfone which could be further oxidized to sulfonic and hydroxyl groups in the presence of water.…”
Section: The Effect Of the Evolution Of Functional Groups On Hg ...mentioning
confidence: 99%
“…Further thermodynamic analysis based on the Benson group contribution method illustrated that thiophene tended to generate an equal amount of sulfate and sulfide but more SO 2 than H 2 S, and sulfoxide tended to generate more SO 2 than H 2 S and more sulfate than sulfide. Except for KOH activation, the inherent sulfur of petroleum coke also could be accessed by nitric acid functionalization [ 54 ]. The proposed reaction pathway for the oxidation of dibenzothiophene [ 56 ] was seen that sulfur in the thiophene groups could be oxidized to sulfone which could be further oxidized to sulfonic and hydroxyl groups in the presence of water.…”
Section: The Effect Of the Evolution Of Functional Groups On Hg ...mentioning
confidence: 99%