Microreactor technology in experimental and modelling study of alcohol oxidation on nanogold

Luca Mastroianni; Zuzana Vajglová; Kari Eränen; Markus Peurla; Martino Di Serio; Dmitry Yu. Murzin; Vincenzo Russo; Tapio Salmi

doi:10.1016/j.ces.2022.117920

Microreactor technology in experimental and modelling study of alcohol oxidation on nanogold

Luca Mastroianni, Zuzana Vajglová, Kari Eränen, Markus Peurla, Martino Di Serio, Dmitry Yu. Murzin, Vincenzo Russo, Tapio Salmi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

34 Downloads (Pure)

Abstract

Selective oxidation of methanol, ethanol, 1-propanol and 1-butanol to corresponding aldehydes was performed in a microreactor in the presence of a Au/γ-Al₂O₃ coated catalyst. Nanoparticle size distribution, acidity, specific surface area and the average pore size as well as uniformity and thickness of the coating layer were evaluated with relevant characterization techniques. The experiments were designed to reveal the effect of temperature, residence time and oxygen-to-alcohol ratio on both alcohol conversion and product distribution. Stability and repeatability of the coating procedure was successfully demonstrated. To describe the reaction kinetics, plausible kinetic equations were implemented in a pseudo-homogeneous plug flow model, which turned out to be an adequate approximation to describe the flow pattern in the microreactor. Non-linear regression analysis enabled the determination of the rate and adsorption parameters included in the kinetic model. An advanced kinetic and mass transfer model was developed to reveal the impact of the diffusion inside the catalytic washcoat layer, confirming that molecular diffusion is not a limiting factor for alcohol oxidation in the microreactor.

Original language	English
Article number	117920
Number of pages	13
Journal	Chemical Engineering Science
Volume	260
DOIs	https://doi.org/10.1016/j.ces.2022.117920
Publication status	Published - 12 Oct 2022
MoE publication type	A1 Journal article-refereed

Keywords

Alcohol oxidation
Gold catalyst
Kinetic modelling
Microreactor
Nanoparticles
Reaction mechanism

Access to Document

10.1016/j.ces.2022.117920

1-s2.0-S0009250922005048-mainFinal published version, 1.92 MBLicence: CC BY

https://urn.fi/URN:NBN:fi-fe202301245308

Cite this

@article{41d1bc02dc9f48ae803a732b2c0859d7,

title = "Microreactor technology in experimental and modelling study of alcohol oxidation on nanogold",

abstract = "Selective oxidation of methanol, ethanol, 1-propanol and 1-butanol to corresponding aldehydes was performed in a microreactor in the presence of a Au/γ-Al2O3 coated catalyst. Nanoparticle size distribution, acidity, specific surface area and the average pore size as well as uniformity and thickness of the coating layer were evaluated with relevant characterization techniques. The experiments were designed to reveal the effect of temperature, residence time and oxygen-to-alcohol ratio on both alcohol conversion and product distribution. Stability and repeatability of the coating procedure was successfully demonstrated. To describe the reaction kinetics, plausible kinetic equations were implemented in a pseudo-homogeneous plug flow model, which turned out to be an adequate approximation to describe the flow pattern in the microreactor. Non-linear regression analysis enabled the determination of the rate and adsorption parameters included in the kinetic model. An advanced kinetic and mass transfer model was developed to reveal the impact of the diffusion inside the catalytic washcoat layer, confirming that molecular diffusion is not a limiting factor for alcohol oxidation in the microreactor.",

keywords = "Alcohol oxidation, Gold catalyst, Kinetic modelling, Microreactor, Nanoparticles, Reaction mechanism",

author = "Luca Mastroianni and Zuzana Vajglov{\'a} and Kari Er{\"a}nen and Markus Peurla and {Di Serio}, Martino and {Yu. Murzin}, Dmitry and Vincenzo Russo and Tapio Salmi",

note = "Funding Information: This research effort is a part of the activities financed by Academy of Finland, the Academy Professor grants 319002, 320115, 345053 (Tapio Salmi and Luca Mastroianni). We are grateful to the Electron Microscopy Laboratory, Institute of Biomedicine, University of Turku, and Biocenter Finland for the TEM investigations. Funding Information: This research effort is a part of the activities financed by Academy of Finland, the Academy Professor grants 319002, 320115, 345053 (Tapio Salmi and Luca Mastroianni). We are grateful to the Electron Microscopy Laboratory, Institute of Biomedicine, University of Turku, and Biocenter Finland for the TEM investigations. Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

month = oct,

day = "12",

doi = "10.1016/j.ces.2022.117920",

language = "English",

volume = "260",

journal = "Chemical Engineering Science",

issn = "0009-2509",

publisher = "Elsevier",

}

TY - JOUR

T1 - Microreactor technology in experimental and modelling study of alcohol oxidation on nanogold

AU - Mastroianni, Luca

AU - Vajglová, Zuzana

AU - Eränen, Kari

AU - Peurla, Markus

AU - Di Serio, Martino

AU - Yu. Murzin, Dmitry

AU - Russo, Vincenzo

AU - Salmi, Tapio

N1 - Funding Information: This research effort is a part of the activities financed by Academy of Finland, the Academy Professor grants 319002, 320115, 345053 (Tapio Salmi and Luca Mastroianni). We are grateful to the Electron Microscopy Laboratory, Institute of Biomedicine, University of Turku, and Biocenter Finland for the TEM investigations. Funding Information: This research effort is a part of the activities financed by Academy of Finland, the Academy Professor grants 319002, 320115, 345053 (Tapio Salmi and Luca Mastroianni). We are grateful to the Electron Microscopy Laboratory, Institute of Biomedicine, University of Turku, and Biocenter Finland for the TEM investigations. Publisher Copyright: © 2022 The Author(s)

PY - 2022/10/12

Y1 - 2022/10/12

N2 - Selective oxidation of methanol, ethanol, 1-propanol and 1-butanol to corresponding aldehydes was performed in a microreactor in the presence of a Au/γ-Al2O3 coated catalyst. Nanoparticle size distribution, acidity, specific surface area and the average pore size as well as uniformity and thickness of the coating layer were evaluated with relevant characterization techniques. The experiments were designed to reveal the effect of temperature, residence time and oxygen-to-alcohol ratio on both alcohol conversion and product distribution. Stability and repeatability of the coating procedure was successfully demonstrated. To describe the reaction kinetics, plausible kinetic equations were implemented in a pseudo-homogeneous plug flow model, which turned out to be an adequate approximation to describe the flow pattern in the microreactor. Non-linear regression analysis enabled the determination of the rate and adsorption parameters included in the kinetic model. An advanced kinetic and mass transfer model was developed to reveal the impact of the diffusion inside the catalytic washcoat layer, confirming that molecular diffusion is not a limiting factor for alcohol oxidation in the microreactor.

AB - Selective oxidation of methanol, ethanol, 1-propanol and 1-butanol to corresponding aldehydes was performed in a microreactor in the presence of a Au/γ-Al2O3 coated catalyst. Nanoparticle size distribution, acidity, specific surface area and the average pore size as well as uniformity and thickness of the coating layer were evaluated with relevant characterization techniques. The experiments were designed to reveal the effect of temperature, residence time and oxygen-to-alcohol ratio on both alcohol conversion and product distribution. Stability and repeatability of the coating procedure was successfully demonstrated. To describe the reaction kinetics, plausible kinetic equations were implemented in a pseudo-homogeneous plug flow model, which turned out to be an adequate approximation to describe the flow pattern in the microreactor. Non-linear regression analysis enabled the determination of the rate and adsorption parameters included in the kinetic model. An advanced kinetic and mass transfer model was developed to reveal the impact of the diffusion inside the catalytic washcoat layer, confirming that molecular diffusion is not a limiting factor for alcohol oxidation in the microreactor.

KW - Alcohol oxidation

KW - Gold catalyst

KW - Kinetic modelling

KW - Microreactor

KW - Nanoparticles

KW - Reaction mechanism

UR - http://www.scopus.com/inward/record.url?scp=85134985425&partnerID=8YFLogxK

U2 - 10.1016/j.ces.2022.117920

DO - 10.1016/j.ces.2022.117920

M3 - Article

AN - SCOPUS:85134985425

SN - 0009-2509

VL - 260

JO - Chemical Engineering Science

JF - Chemical Engineering Science

M1 - 117920

ER -

Microreactor technology in experimental and modelling study of alcohol oxidation on nanogold

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this