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Bathena T, Phung T, Svadlenak SR, Liu Y, Grabow LC, Goulas KA. Oxygenate Reactions over PdCu and PdAg Catalysts: Distinguishing Electronic and Geometric Effects on Reactivity and Selectivity. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tanmayi Bathena
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Truc Phung
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Scott R. Svadlenak
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Yu Liu
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, United States
| | - Lars C. Grabow
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, United States
- Texas Center for Superconductivity at the University of Houston (TcSUH), Houston, Texas 77204, United States
| | - Konstantinos A. Goulas
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
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Chu M, Pan Q, Bian W, Liu Y, Cao M, Zhang C, Lin H, Zhang Q, Xu Y. Strong metal–support interaction between palladium and gallium oxide within monodisperse nanoparticles: self-supported catalysts for propyne semi-hydrogenation. J Catal 2021. [DOI: 10.1016/j.jcat.2020.12.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Subramaniam S, Guo MF, Bathena T, Gray M, Zhang X, Martinez A, Kovarik L, Goulas KA, Ramasamy KK. Direct Catalytic Conversion of Ethanol to C 5+ Ketones: Role of Pd-Zn Alloy on Catalytic Activity and Stability. Angew Chem Int Ed Engl 2020; 59:14550-14557. [PMID: 32415724 DOI: 10.1002/anie.202005256] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Indexed: 11/06/2022]
Abstract
Ethanol can be used as a platform molecule for synthesizing valuable chemicals and fuel precursors. Direct synthesis of C5+ ketones, building blocks for lubricants and hydrocarbon fuels, from ethanol was achieved over a stable Pd-promoted ZnO-ZrO2 catalyst. The sequence of reaction steps involved in the C5+ ketone formation from ethanol was determined. The key reaction steps were found to be the in situ generation of the acetone intermediate and the cross-aldol condensation between the reaction intermediates acetaldehyde and acetone. The formation of a Pd-Zn alloy in situ was identified to be the critical factor in maintaining high yield to the C5+ ketones and the stability of the catalyst. A yield of >70 % to C5+ ketones was achieved over a 0.1 % Pd-ZnO-ZrO2 mixed oxide catalyst, and the catalyst was demonstrated to be stable beyond 2000 hours on stream without any catalyst deactivation.
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Affiliation(s)
- Senthil Subramaniam
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Mond F Guo
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Tanmayi Bathena
- Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Michel Gray
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Xiao Zhang
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Abraham Martinez
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Libor Kovarik
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Konstantinos A Goulas
- Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Karthikeyan K Ramasamy
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
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Subramaniam S, Guo MF, Bathena T, Gray M, Zhang X, Martinez A, Kovarik L, Goulas KA, Ramasamy KK. Direct Catalytic Conversion of Ethanol to C
5+
Ketones: Role of Pd–Zn Alloy on Catalytic Activity and Stability. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Senthil Subramaniam
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
| | - Mond F. Guo
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
| | - Tanmayi Bathena
- Chemical, Biological, and Environmental Engineering Oregon State University Corvallis OR 97331 USA
| | - Michel Gray
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Xiao Zhang
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
| | - Abraham Martinez
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Libor Kovarik
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Konstantinos A. Goulas
- Chemical, Biological, and Environmental Engineering Oregon State University Corvallis OR 97331 USA
| | - Karthikeyan K. Ramasamy
- Chemical and Biological Processing Group Pacific Northwest National Laboratory Richland WA 99354 USA
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Abstract
Atom probe tomography is a well-established analytical instrument for imaging the 3D structure and composition of materials with high mass resolution, sub-nanometer spatial resolution and ppm elemental sensitivity. Thanks to recent hardware developments in Atom Probe Tomography (APT), combined with progress on site-specific focused ion beam (FIB)-based sample preparation methods and improved data treatment software, complex materials can now be routinely investigated. From model samples to complex, usable porous structures, there is currently a growing interest in the analysis of catalytic materials. APT is able to probe the end state of atomic-scale processes, providing information needed to improve the synthesis of catalysts and to unravel structure/composition/reactivity relationships. This review focuses on the study of catalytic materials with increasing complexity (tip-sample, unsupported and supported nanoparticles, powders, self-supported catalysts and zeolites), as well as sample preparation methods developed to obtain suitable specimens for APT experiments.
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