The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenation reactions

Peng Zhai; David A. Cullen; Kunlun Ding

doi:10.1016/j.cej.2023.148238

The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenation reactions

Peng Zhai, David A. Cullen, Kunlun Ding

Materials MicroAnalysis

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

8 Scopus citations

Abstract

Understanding and controlling the structure of supported bimetallic/intermetallic catalysts are crucial for many heterogeneous catalytic reactions. However, commonly used synthesis techniques such as coimpregnation and coadsorption often yield nonuniform alloying and phase segregation, largely owing to the lack of interactions between different metal precursors. Here we show that by adopting sequential adsorption of complex metal cations and anions with the assistance of a proper ligand, the interaction between different metal precursors is enhanced, thus resulting in uniformly alloyed intermetallic catalysts. The supported CuPd intermetallic catalyst exhibits greatly improved selectivity towards monoolefins in the semihydrogenation of acetylene and butadiene compared to those random CuPd alloys synthesized via coimpregnation and coadsorption methods.

Original language	English
Article number	148238
Journal	Chemical Engineering Journal
Volume	480
DOIs	https://doi.org/10.1016/j.cej.2023.148238
State	Published - Jan 15 2024

Funding

We thank Dr. J.J. Spivey for the access to IR instrument and Dr. D.R. Aireddy for the help in XRD measurement. K.D. acknowledges the startup funding and LIFT2 grant from Louisiana State University. Scanning transmission electron microscopy was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. Scanning electron microscopy and X-ray diffraction studies was performed at the Shared Instrumentation Facility (SIF) at Louisiana State University. We sincerely appreciate the inspiration from Professor Bruce Gates, who pioneered the field of supported metal cluster synthesis and characterization. We thank Dr. J.J. Spivey for the access to IR instrument and Dr. D.R. Aireddy for the help in XRD measurement. K.D. acknowledges the startup funding and LIFT2 grant from Louisiana State University. Scanning transmission electron microscopy was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. Scanning electron microscopy and X-ray diffraction studies was performed at the Shared Instrumentation Facility (SIF) at Louisiana State University. We sincerely appreciate the inspiration from Professor Bruce Gates, who pioneered the field of supported metal cluster synthesis and characterization.

Keywords

Bimetallic
Infrared spectroscopy
Intermetallic
Selective hydrogenation
Surface chemistry

Access to Document

10.1016/j.cej.2023.148238

Cite this

@article{f370899e8f7a4059b3445f68617dda88,

title = "The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenation reactions",

abstract = "Understanding and controlling the structure of supported bimetallic/intermetallic catalysts are crucial for many heterogeneous catalytic reactions. However, commonly used synthesis techniques such as coimpregnation and coadsorption often yield nonuniform alloying and phase segregation, largely owing to the lack of interactions between different metal precursors. Here we show that by adopting sequential adsorption of complex metal cations and anions with the assistance of a proper ligand, the interaction between different metal precursors is enhanced, thus resulting in uniformly alloyed intermetallic catalysts. The supported CuPd intermetallic catalyst exhibits greatly improved selectivity towards monoolefins in the semihydrogenation of acetylene and butadiene compared to those random CuPd alloys synthesized via coimpregnation and coadsorption methods.",

keywords = "Bimetallic, Infrared spectroscopy, Intermetallic, Selective hydrogenation, Surface chemistry",

author = "Peng Zhai and Cullen, {David A.} and Kunlun Ding",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2024",

month = jan,

day = "15",

doi = "10.1016/j.cej.2023.148238",

language = "English",

volume = "480",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

}

TY - JOUR

T1 - The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenation reactions

AU - Zhai, Peng

AU - Cullen, David A.

AU - Ding, Kunlun

PY - 2024/1/15

Y1 - 2024/1/15

N2 - Understanding and controlling the structure of supported bimetallic/intermetallic catalysts are crucial for many heterogeneous catalytic reactions. However, commonly used synthesis techniques such as coimpregnation and coadsorption often yield nonuniform alloying and phase segregation, largely owing to the lack of interactions between different metal precursors. Here we show that by adopting sequential adsorption of complex metal cations and anions with the assistance of a proper ligand, the interaction between different metal precursors is enhanced, thus resulting in uniformly alloyed intermetallic catalysts. The supported CuPd intermetallic catalyst exhibits greatly improved selectivity towards monoolefins in the semihydrogenation of acetylene and butadiene compared to those random CuPd alloys synthesized via coimpregnation and coadsorption methods.

AB - Understanding and controlling the structure of supported bimetallic/intermetallic catalysts are crucial for many heterogeneous catalytic reactions. However, commonly used synthesis techniques such as coimpregnation and coadsorption often yield nonuniform alloying and phase segregation, largely owing to the lack of interactions between different metal precursors. Here we show that by adopting sequential adsorption of complex metal cations and anions with the assistance of a proper ligand, the interaction between different metal precursors is enhanced, thus resulting in uniformly alloyed intermetallic catalysts. The supported CuPd intermetallic catalyst exhibits greatly improved selectivity towards monoolefins in the semihydrogenation of acetylene and butadiene compared to those random CuPd alloys synthesized via coimpregnation and coadsorption methods.

KW - Bimetallic

KW - Infrared spectroscopy

KW - Intermetallic

KW - Selective hydrogenation

KW - Surface chemistry

UR - http://www.scopus.com/inward/record.url?scp=85181020873&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2023.148238

DO - 10.1016/j.cej.2023.148238

M3 - Article

AN - SCOPUS:85181020873

SN - 1385-8947

VL - 480

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 148238

ER -

The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenation reactions

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this