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Title: Atomic layer deposited Pt-Co bimetallic catalysts for selective hydrogenation of α, β-unsaturated aldehydes to unsaturated alcohols

Abstract

Highly dispersed Pt-Co bimetallic catalysts were deposited on multi-walled carbon nanotubes (MWCNTs) by atomic layer deposition (ALD). High selectivity to cinnamic alcohol (>90%) was achieved with high conversion (>90%) in hydrogenation of cinnamaldehyde over an optimized Pt-Co/MWCNTs catalyst. The catalyst also showed both high activity and high selectivity in C=O activation (>90%) in selective hydrogenation reactions of other alpha, beta-unsaturated aldehydes, which indicated that the bimetallic catalyst was a universal and highly efficient catalyst for these kinds of reactions. Further, through a series of experiments and density functional theory (DFT) calculations, the synergistic effects of Pt, Co, and MWCNTs were investigated. The results revealed that the interaction between Pt and Co NPs worked as an important role in the high selectivity in C=O activation, and the synergistic effect between Pt-Co and MWCNTs boosted greatly the activity of Pt-Co bimetallic catalysts.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division
OSTI Identifier:
1484230
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Journal of Catalysis
Additional Journal Information:
Journal Volume: 366; Journal Issue: 2018; Journal ID: ISSN 0021-9517
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Wang, Xiaofeng, Liu, Yuzi, and Liang, Xinhua. Atomic layer deposited Pt-Co bimetallic catalysts for selective hydrogenation of α, β-unsaturated aldehydes to unsaturated alcohols. United States: N. p., 2018. Web. doi:10.1016/j.jcat.2018.07.031.
Wang, Xiaofeng, Liu, Yuzi, & Liang, Xinhua. Atomic layer deposited Pt-Co bimetallic catalysts for selective hydrogenation of α, β-unsaturated aldehydes to unsaturated alcohols. United States. doi:10.1016/j.jcat.2018.07.031.
Wang, Xiaofeng, Liu, Yuzi, and Liang, Xinhua. Mon . "Atomic layer deposited Pt-Co bimetallic catalysts for selective hydrogenation of α, β-unsaturated aldehydes to unsaturated alcohols". United States. doi:10.1016/j.jcat.2018.07.031.
@article{osti_1484230,
title = {Atomic layer deposited Pt-Co bimetallic catalysts for selective hydrogenation of α, β-unsaturated aldehydes to unsaturated alcohols},
author = {Wang, Xiaofeng and Liu, Yuzi and Liang, Xinhua},
abstractNote = {Highly dispersed Pt-Co bimetallic catalysts were deposited on multi-walled carbon nanotubes (MWCNTs) by atomic layer deposition (ALD). High selectivity to cinnamic alcohol (>90%) was achieved with high conversion (>90%) in hydrogenation of cinnamaldehyde over an optimized Pt-Co/MWCNTs catalyst. The catalyst also showed both high activity and high selectivity in C=O activation (>90%) in selective hydrogenation reactions of other alpha, beta-unsaturated aldehydes, which indicated that the bimetallic catalyst was a universal and highly efficient catalyst for these kinds of reactions. Further, through a series of experiments and density functional theory (DFT) calculations, the synergistic effects of Pt, Co, and MWCNTs were investigated. The results revealed that the interaction between Pt and Co NPs worked as an important role in the high selectivity in C=O activation, and the synergistic effect between Pt-Co and MWCNTs boosted greatly the activity of Pt-Co bimetallic catalysts.},
doi = {10.1016/j.jcat.2018.07.031},
journal = {Journal of Catalysis},
issn = {0021-9517},
number = 2018,
volume = 366,
place = {United States},
year = {2018},
month = {8}
}