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^*

^*此作品的通讯作者

化学与分子工程学院

East China Normal University
Institute of Eco-Chongming

科研成果: 期刊稿件 › 文章 › 同行评审

8 引用（Scopus）

摘要

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.

源语言	英语
文章编号	106736
期刊	Catalysis Communications
卷	181
DOI	https://doi.org/10.1016/j.catcom.2023.106736
出版状态	已出版 - 8月 2023

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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",

issn = "1566-7367",

publisher = "Elsevier B.V.",

}

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 Co0.5Fe0.5Al2O4 supported Pt catalysts on the selective hydrogenation of cinnamaldehyde

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