Kinetics of tri-phase extractive oxidative desulfurization of benzothiophene with molecular oxygen catalyzed by HPA-5

Claußnitzer J, Bertleff B, Korth W, Albert J, Wasserscheid P, Jess A (2019)

Publication Type: Journal article, Original article

Publication year: 2019

Journal

Chemical Engineering & Technology Wiley-VCH Verlag

DOI: 10.1002/ceat.201900448

Abstract

The triphasic, aerobic, extractive desulfurization of benzothiophene (BT) using an aqueous H₈[PV₅Mo₇O₄₀] solution as catalyst and O₂ as oxidant was investigated. A time-resolved analysis of all reaction products in the gas, organic and aqueous phase, is given. The organic sulfur in BT is mainly converted to sulfuric acid (S_SA > 60 %). Mass transport limitations can be excluded and an activation energy of BT oxidation of 90 ± 8 kJ mol^-1 was determined. The reaction orders are 1 with regard to BT, and 0.5 both for HPA-5 and O₂. Calculated data derived from this mechanism with a power law kinetic approach show good agreement to the experimental data for conversions below 60 %. At higher BT conversions, significant deviations are found suggesting that acidic products formed in the BT oxidation affect the catalyst and therefore the initial kinetics of the BT oxidation.

Authors with CRIS profile

Benjamin Bertleff Lehrstuhl für Chemische Reaktionstechnik Jakob Albert Lehrstuhl für Chemische Reaktionstechnik Peter Wasserscheid Lehrstuhl für Chemische Reaktionstechnik

Involved external institutions

Universität Bayreuth

Germany (DE)

How to cite

APA:

Claußnitzer, J., Bertleff, B., Korth, W., Albert, J., Wasserscheid, P., & Jess, A. (2019). Kinetics of tri-phase extractive oxidative desulfurization of benzothiophene with molecular oxygen catalyzed by HPA-5. Chemical Engineering & Technology. https://doi.org/10.1002/ceat.201900448

MLA:

Claußnitzer, Johannes, et al. "Kinetics of tri-phase extractive oxidative desulfurization of benzothiophene with molecular oxygen catalyzed by HPA-5." Chemical Engineering & Technology (2019).

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