Unusual size effect of spinel Co0.5Fe0.5Al2O4 supported Pt catalysts on the selective hydrogenation of cinnamaldehyde

Mengnan Li; Huiyue Xin; Tongyang Song; Chen Zhao; Peng Wu; Xiaohong Li

doi:10.1016/j.catcom.2023.106736

Unusual size effect of spinel Co_0.5Fe_0.5Al₂O₄ supported Pt catalysts on the selective hydrogenation of cinnamaldehyde

Mengnan Li, Huiyue Xin, Tongyang Song, Chen Zhao, Peng Wu, Xiaohong Li

School of Chemistry and Molecular Engineering

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

5 Scopus citations

Abstract

Pt/Co_0.5Fe_0.5Al₂O₄ catalysts with the average Pt particle size of 1.6–3.4 nm were prepared and applied to the selective hydrogenation of cinnamaldehyde (CAL). Not only the TOF was promoted from 0.19 to 2.70 s⁻¹, but also the selectivity to cinnamyl alcohol (COL) was improved from 68% to 94%, with the increase of Pt particle size. Stronger interaction occurred between Co_0.5Fe_0.5Al₂O₄ and smaller-sized Pt particles, resulting in electron-deficient Pt particles, so that C[dbnd]O and C[dbnd]C bond could be activated simultaneously. However, electron-rich Pt species existed on Pt/Co_0.5Fe_0.5Al₂O₄ with larger Pt size, which is beneficial for the preferential activation of C[dbnd]O bond.

Original language	English
Article number	106736
Journal	Catalysis Communications
Volume	181
DOIs	https://doi.org/10.1016/j.catcom.2023.106736
State	Published - Aug 2023

Keywords

Cinnamaldehyde
Pt/CoFeAlO catalyst
Selective hydrogenation
Size effect

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10.1016/j.catcom.2023.106736

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@article{410e1c1cf1dd4d6ca72d590b9da8defc,

title = "Unusual size effect of spinel Co0.5Fe0.5Al2O4 supported Pt catalysts on the selective hydrogenation of cinnamaldehyde",

abstract = "Pt/Co0.5Fe0.5Al2O4 catalysts with the average Pt particle size of 1.6–3.4 nm were prepared and applied to the selective hydrogenation of cinnamaldehyde (CAL). Not only the TOF was promoted from 0.19 to 2.70 s−1, but also the selectivity to cinnamyl alcohol (COL) was improved from 68\% to 94\%, with the increase of Pt particle size. Stronger interaction occurred between Co0.5Fe0.5Al2O4 and smaller-sized Pt particles, resulting in electron-deficient Pt particles, so that C[dbnd]O and C[dbnd]C bond could be activated simultaneously. However, electron-rich Pt species existed on Pt/Co0.5Fe0.5Al2O4 with larger Pt size, which is beneficial for the preferential activation of C[dbnd]O bond.",

keywords = "Cinnamaldehyde, Pt/CoFeAlO catalyst, Selective hydrogenation, Size effect",

author = "Mengnan Li and Huiyue Xin and Tongyang Song and Chen Zhao and Peng Wu and Xiaohong Li",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

month = aug,

doi = "10.1016/j.catcom.2023.106736",

language = "英语",

volume = "181",

journal = "Catalysis Communications",

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TY - JOUR

T1 - Unusual size effect of spinel Co0.5Fe0.5Al2O4 supported Pt catalysts on the selective hydrogenation of cinnamaldehyde

AU - Li, Mengnan

AU - Xin, Huiyue

AU - Song, Tongyang

AU - Zhao, Chen

AU - Wu, Peng

AU - Li, Xiaohong

PY - 2023/8

Y1 - 2023/8

N2 - Pt/Co0.5Fe0.5Al2O4 catalysts with the average Pt particle size of 1.6–3.4 nm were prepared and applied to the selective hydrogenation of cinnamaldehyde (CAL). Not only the TOF was promoted from 0.19 to 2.70 s−1, but also the selectivity to cinnamyl alcohol (COL) was improved from 68% to 94%, with the increase of Pt particle size. Stronger interaction occurred between Co0.5Fe0.5Al2O4 and smaller-sized Pt particles, resulting in electron-deficient Pt particles, so that C[dbnd]O and C[dbnd]C bond could be activated simultaneously. However, electron-rich Pt species existed on Pt/Co0.5Fe0.5Al2O4 with larger Pt size, which is beneficial for the preferential activation of C[dbnd]O bond.

AB - Pt/Co0.5Fe0.5Al2O4 catalysts with the average Pt particle size of 1.6–3.4 nm were prepared and applied to the selective hydrogenation of cinnamaldehyde (CAL). Not only the TOF was promoted from 0.19 to 2.70 s−1, but also the selectivity to cinnamyl alcohol (COL) was improved from 68% to 94%, with the increase of Pt particle size. Stronger interaction occurred between Co0.5Fe0.5Al2O4 and smaller-sized Pt particles, resulting in electron-deficient Pt particles, so that C[dbnd]O and C[dbnd]C bond could be activated simultaneously. However, electron-rich Pt species existed on Pt/Co0.5Fe0.5Al2O4 with larger Pt size, which is beneficial for the preferential activation of C[dbnd]O bond.

KW - Cinnamaldehyde

KW - Pt/CoFeAlO catalyst

KW - Selective hydrogenation

KW - Size effect

UR - https://www.scopus.com/pages/publications/85165700836

U2 - 10.1016/j.catcom.2023.106736

DO - 10.1016/j.catcom.2023.106736

M3 - 文章

AN - SCOPUS:85165700836

SN - 1566-7367

VL - 181

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 106736

ER -

Unusual size effect of spinel Co_0.5Fe_0.5Al₂O₄ supported Pt catalysts on the selective hydrogenation of cinnamaldehyde

Abstract

Keywords

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