1
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Zhu C, Li W, Chen T, He Z, Villalobos E, Marini C, Zhou J, Woon Lo BT, Xiao H, Liu L. Boosting the Stability of Subnanometer Pt Catalysts by the Presence of Framework Indium(III) Sites in Zeolite. Angew Chem Int Ed Engl 2024; 63:e202409784. [PMID: 39225426 DOI: 10.1002/anie.202409784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Indexed: 09/04/2024]
Abstract
Subnanometer metal clusters show advantages over conventional metal nanoparticles in numerous catalytic reactions owing to their high percentage of exposed surface sites, abundance of under-coordinated metal sites and unique electronic structures. However, the applications of subnanometer metal clusters in high-temperature catalytic reactions (>600 °C) are still hindered, because of their low stability under harsh reaction conditions. In this work, we have developed a zeolite-confined bimetallic PtIn catalyst with exceptionally high stability against sintering. A combination of experimental and theoretical studies shows that the isolated framework In(III) species serve as the anchoring sites for Pt species, precluding the migration and sintering of Pt species in the oxidative atmosphere at ≥650 °C. The catalyst comprising subnanometer PtIn clusters exhibits long-term stability of >1000 h during a cyclic reaction-regeneration test for ethane dehydrogenation reaction.
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Affiliation(s)
- Chaofeng Zhu
- Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Wenying Li
- Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Tianxiang Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Hong Kong, China
| | - Zhe He
- Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Eduardo Villalobos
- ALBA Synchrotron Light Source, Cerdanyola del Vallès, Barcelona, 08290, Spain
| | - Carlo Marini
- ALBA Synchrotron Light Source, Cerdanyola del Vallès, Barcelona, 08290, Spain
| | - Jian Zhou
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp., Shanghai, 201208, China
| | - Benedict Tsz Woon Lo
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Hong Kong, China
| | - Hai Xiao
- Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Lichen Liu
- Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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2
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Dou X, Li K, Zhang K, Zhu C, Meira DM, Song Y, He P, Zhang L, Liu L. Isolated Pt Atoms Stabilized by Ga 2O 3 Clusters Confined in ZSM-5 for Nonoxidative Activation of Ethane. JACS AU 2024; 4:3547-3557. [PMID: 39328764 PMCID: PMC11423304 DOI: 10.1021/jacsau.4c00480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 08/12/2024] [Accepted: 08/16/2024] [Indexed: 09/28/2024]
Abstract
Selective activation of light alkanes is an essential reaction in the petrochemical industry for producing commodity chemicals, such as light olefins and aromatics. Because of the much higher intrinsic activities of noble metals in comparison to non-noble metals, it is desirable to employ solid catalysts with low noble metal loadings to reduce the cost of catalysts. Herein, we report the introduction of a tiny amount of Pt (at levels of hundreds of ppm) as a promoter of the Ga2O3 clusters encapsulated in ZSM-5 zeolite, which leads to ∼20-fold improvement in the activity for ethane dehydrogenation reaction. A combination of experimental and theoretical studies shows that the isolated Pt atoms stabilized by small Ga2O3 clusters are the active sites for activating the inert C-H bonds in ethane. The synergy of atomically dispersed Pt and Ga2O3 clusters confined in the 10MR channels of ZSM-5 can serve as a bifunctional catalyst for the direct ethane-benzene coupling reaction for the production of ethylbenzene, surpassing the performances of the counterpart catalysts made with PtGa nanoclusters and nanoparticles.
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Affiliation(s)
- Xiaomeng Dou
- Engineering
Research Center of Advanced Rare-Earth Materials of Ministry of Education,
Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Kailang Li
- Center
for Combustion Energy, Tsinghua University, Beijing 100084, China
- School
of Vehicle and Mobility, Tsinghua University, Beijing 100084, China
| | - Kun Zhang
- State
Key Laboratory of Coal Conversion, Institute
of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National
Energy R&D Center for Coal to Liquid Fuels, Synfuels China Technology Co., Ltd., Beijing 101407, P. R. China
| | - Chaofeng Zhu
- Engineering
Research Center of Advanced Rare-Earth Materials of Ministry of Education,
Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Debora M. Meira
- CLS@APS Sector
20, Advanced Photon Source, Argonne National
Laboratory, 9700 S. Cass
Avenue, Argonne, Illinois 60439, United States
- Canadian
Light Source, Inc., 44
Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Yang Song
- Center
for Renewable Energy, Research Institute
of Petroleum Processing, Beijing 100083, China
| | - Peng He
- State
Key Laboratory of Coal Conversion, Institute
of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National
Energy R&D Center for Coal to Liquid Fuels, Synfuels China Technology Co., Ltd., Beijing 101407, P. R. China
| | - Liang Zhang
- Center
for Combustion Energy, Tsinghua University, Beijing 100084, China
- School
of Vehicle and Mobility, Tsinghua University, Beijing 100084, China
| | - Lichen Liu
- Engineering
Research Center of Advanced Rare-Earth Materials of Ministry of Education,
Department of Chemistry, Tsinghua University, Beijing 100084, China
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3
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Ma L, Li K, Xiao Y, Shi K, Ma Y, Yang M, Yang Y, Li Y, Ma Y, Sun Y, Ji W. Hydrothermal synthesis of high crystallinity ZSM-5 zeolite from coal gasification coarse slag and mother liquor circulation for efficient coal chemical wastewater purification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:36849-36860. [PMID: 38758436 DOI: 10.1007/s11356-024-33264-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 04/05/2024] [Indexed: 05/18/2024]
Abstract
A hydrothermal synthesis method was developed to produce high crystallinity ZSM-5 zeolite using coal gasification coarse slag (CGCS) as the raw material. Instead of the expensive NaOH(s.), Na2SiO3(s.) was utilized to activate, depolymerize, and recombine Si and Al elements in the CGCS. The mother liquor circulation technology was employed to recover and reuse raw materials and residual reagents (Na2SiO3(aq.) and TPABr), reducing waste emissions and enhancing resource utilization efficiency. The synthesized ZSM-5 had a specific surface area of 455.675 m2 g-1, pore volume of 0.284 cm3 g-1, and pore diameter of 2.496 nm. The influence of various factors on the morphology and crystallinity of ZSM-5 was investigated, resulting in the production of ZSM-5 with higher specific surface area and pore volume. Adsorption experiments showed that WU-ZSM-5 exhibited a removal efficiency of 85% for ammonia nitrogen (NH4+-N(aq.)), validating its effectiveness in coal chemical wastewater purification. The mother liquor recycling technology enabled zero-emission utilization of solid waste resources and improved the utilization rate of alkali and template to 90%. These results demonstrate the potential application of the developed method in the efficient treatment of coal chemical wastewater.
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Affiliation(s)
- Lu Ma
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Kangning Li
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Yi Xiao
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Keren Shi
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Yulin Ma
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Mei Yang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Yifei Yang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Yuanyuan Li
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Yulong Ma
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Yonggang Sun
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Wenxin Ji
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China.
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4
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Heard CJ, Grajciar L, Erlebach A. Migration of zeolite-encapsulated subnanometre platinum clusters via reactive neural network potentials. NANOSCALE 2024; 16:8108-8118. [PMID: 38567421 DOI: 10.1039/d4nr00017j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The migration of atoms and small clusters is an important process in sub-nanometre scale heterogeneous catalysis, affecting activity, accessibility and deactivation through sintering. Control of migration can be partially achieved via encapsulation of sub-nanometre metal particles into porous media such as zeolites. However, a general understanding of the migration mechanisms and their sensitivity to particle size and framework environment is lacking. Here, we extend the time-scale and sampling of atomistic simulations of platinum cluster diffusion in siliceous zeolite frameworks, by introducing a reactive neural network potential of density functional quality. We observe that Pt atoms migrate in a qualitatively different manner from clusters, occupying the dense region of the framework and avoiding the free pore space. We also find that for cage-like zeolite CHA there exists a maximum in self diffusivity for the Pt dimer beyond which, confinement effects hinder intercage migration. By extending the quality of sampling, NNP-based methods allow for the discovery of novel dynamical processes at the atomistic scale, bringing modelling closer to operando experimental characterization of catalytic materials.
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Affiliation(s)
- Christopher J Heard
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Praha 2, 12843, Czech Republic.
| | - Lukáš Grajciar
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Praha 2, 12843, Czech Republic.
| | - Andreas Erlebach
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Praha 2, 12843, Czech Republic.
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5
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Zhou W, Felvey N, Guo J, Hoffman AS, Bare SR, Kulkarni AR, Runnebaum RC, Kronawitter CX. Reduction of Cofed Carbon Dioxide Modifies the Local Coordination Environment of Zeolite-Supported, Atomically Dispersed Chromium to Promote Ethane Dehydrogenation. J Am Chem Soc 2024; 146:10060-10072. [PMID: 38551239 PMCID: PMC11009955 DOI: 10.1021/jacs.4c00995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/28/2024] [Accepted: 03/01/2024] [Indexed: 04/11/2024]
Abstract
The reduction of CO2 is known to promote increased alkene yields from alkane dehydrogenations when the reactions are cocatalyzed. The mechanism of this promotion is not understood in the context of catalyst active-site environments because CO2 is amphoteric, and even general aspects of the chemistry, including the significance of competing side reactions, differ significantly across catalysts. Atomically dispersed chromium cations stabilized in highly siliceous MFI zeolite are shown here to enable the study of the role of parallel CO2 reduction during ethylene-selective ethane dehydrogenation. Based on infrared spectroscopy and X-ray absorption spectroscopy data interpreted through calculations using density functional theory (DFT), the synthesized catalyst contains atomically dispersed Cr cations stabilized by silanol nests in micropores. Reactor studies show that cofeeding CO2 increases stable ethylene-selective ethane dehydrogenation rates over a wide range of partial pressures. Operando X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine-structure (EXAFS) spectra indicate that during reaction at 650 °C the Cr cations maintain a nominal 2+ charge and a total Cr-O coordination number of approximately 2. However, CO2 reduction induces a change, correlated with the CO2 partial pressure, in the population of two distinct Cr-O scattering paths. This indicates that the promotional effect of parallel CO2 reduction can be attributed to a subtle change in Cr-O bond lengths in the local coordination environment of the active site. These insights are made possible by simultaneously fitting multiple EXAFS spectra recorded in different reaction conditions; this novel procedure is expected to be generally applicable for interpreting operando catalysis EXAFS data.
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Affiliation(s)
- Wenqi Zhou
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Noah Felvey
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Jiawei Guo
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Adam S. Hoffman
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Simon R. Bare
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Ambarish R. Kulkarni
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ron C. Runnebaum
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
- Department
of Viticulture & Enology, University
of California, Davis, California 95616, United States
| | - Coleman X. Kronawitter
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
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6
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Yalcin K, Kumar R, Zuidema E, Kulkarni AR, Ciston J, Bustillo KC, Ercius P, Katz A, Gates BC, Kronawitter CX, Runnebaum RC. Reversible Intrapore Redox Cycling of Platinum in Platinum-Ion-Exchanged HZSM-5 Catalysts. ACS Catal 2024; 14:4999-5005. [PMID: 38601777 PMCID: PMC11002820 DOI: 10.1021/acscatal.3c06325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 04/12/2024]
Abstract
Isolated platinum(II) ions anchored at acid sites in the pores of zeolite HZSM-5, initially introduced by aqueous ion exchange, were reduced to form platinum nanoparticles that are stably dispersed with a narrow size distribution (1.3 ± 0.4 nm in average diameter). The nanoparticles were confined in reservoirs within the porous zeolite particles, as shown by electron beam tomography and the shape-selective catalysis of alkene hydrogenation. When the nanoparticles were oxidatively fragmented in dry air at elevated temperature, platinum returned to its initial in-pore atomically dispersed state with a charge of +2, as shown previously by X-ray absorption spectroscopy. The results determine the conditions under which platinum is retained within the pores of HZSM-5 particles during redox cycles that are characteristic of the reductive conditions of catalyst operation and the oxidative conditions of catalyst regeneration.
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Affiliation(s)
- Kaan Yalcin
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ram Kumar
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Erik Zuidema
- Shell
Global Solutions B.V. Amsterdam 1031 HW, The Netherlands
| | - Ambarish R. Kulkarni
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Jim Ciston
- National
Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Karen C. Bustillo
- National
Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Peter Ercius
- National
Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alexander Katz
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Bruce C. Gates
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Coleman X. Kronawitter
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ron C. Runnebaum
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
- Department
of Viticulture & Enology, University
of California, Davis, 95616, United States
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7
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Robatjazi H, Battsengel T, Finzel J, Tieu P, Xu M, Hoffman AS, Qi J, Bare SR, Pan X, Chmelka BF, Halas NJ, Christopher P. Dynamic Behavior of Platinum Atoms and Clusters in the Native Oxide Layer of Aluminum Nanocrystals. ACS NANO 2024; 18:6638-6649. [PMID: 38350032 DOI: 10.1021/acsnano.3c12869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Strong metal-support interactions (SMSIs) are well-known in the field of heterogeneous catalysis to induce the encapsulation of platinum (Pt) group metals by oxide supports through high temperature H2 reduction. However, demonstrations of SMSI overlayers have largely been limited to reducible oxides, such as TiO2 and Nb2O5. Here, we show that the amorphous native surface oxide of plasmonic aluminum nanocrystals (AlNCs) exhibits SMSI-induced encapsulation of Pt following reduction in H2 in a Pt structure dependent manner. Reductive treatment in H2 at 300 °C induces the formation of an AlOx SMSI overlayer on Pt clusters, leaving Pt single-atom sites (Ptiso) exposed available for catalysis. The remaining exposed Ptiso species possess a more uniform local coordination environment than has been observed on other forms of Al2O3, suggesting that the AlOx native oxide of AlNCs presents well-defined anchoring sites for individual Pt atoms. This observation extends our understanding of SMSIs by providing evidence that H2-induced encapsulation can occur for a wider variety of materials and should stimulate expanded studies of this effect to include nonreducible oxides with oxygen defects and the presence of disorder. It also suggests that the single-atom sites created in this manner, when combined with the plasmonic properties of the Al nanocrystal core, may allow for site-specific single-atom plasmonic photocatalysis, providing dynamic control over the light-driven reactivity in these systems.
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Affiliation(s)
- Hossein Robatjazi
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Syzygy Plasmonics Inc., Houston, Texas 77054, United States
| | - Tsatsral Battsengel
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Jordan Finzel
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Peter Tieu
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Mingjie Xu
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697, United States
| | - Adam S Hoffman
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Ji Qi
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Simon R Bare
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Xiaoqing Pan
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697, United States
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697, United States
- Irvine Materials Research Institute (IMRI), University of California, Irvine, Irvine, California 92697, United States
| | - Bradley F Chmelka
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Naomi J Halas
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Phillip Christopher
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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8
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Li X, Cheng J, Hou H, Meira DM, Liu L. Reactant-Induced Structural Evolution of Pt Catalysts Confined in Zeolite. JACS AU 2024; 4:666-679. [PMID: 38425920 PMCID: PMC10900205 DOI: 10.1021/jacsau.3c00732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 03/02/2024]
Abstract
Reactant-induced structural evolutions of heterogeneous metal catalysts are frequently observed in numerous catalytic systems, which can be associated with the formation or deactivation of active sites. In this work, we will show the structural transformation of subnanometer Pt clusters in pure-silica MFI zeolite structure in the presence of CO, O2, and/or H2O and the catalytic consequences of the Pt-zeolite materials derived from various treatment conditions. By applying the appropriate pretreatment under a reactant atmosphere, we can precisely modulate the size distribution of Pt species spanning from single Pt atoms to small Pt nanoparticles (1-5 nm) in the zeolite matrix, resulting in the desirably active and stable Pt species for CO oxidation. We also show the incorporation of Fe into the zeolite framework greatly promotes the stability of Pt species against undesired sintering under harsh conditions (up to 650 °C in the presence of CO, O2, and moisture).
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Affiliation(s)
- Xiaoyu Li
- Engineering
Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jinling Cheng
- Engineering
Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huaming Hou
- National
Energy Center for Coal to Clean Fuels, Synfuels
China Co., Ltd., Huairou
District, Beijing 101407, China
| | - Debora M. Meira
- CLS@APS
sector 20, Advanced Photon Source, Argonne
National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Canadian
Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Lichen Liu
- Engineering
Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
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9
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Guo J, Sours T, Holton S, Sun C, Kulkarni AR. Screening Cu-Zeolites for Methane Activation Using Curriculum-Based Training. ACS Catal 2024; 14:1232-1242. [PMID: 38327646 PMCID: PMC10845107 DOI: 10.1021/acscatal.3c05275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 02/09/2024]
Abstract
Machine learning (ML), when used synergistically with atomistic simulations, has recently emerged as a powerful tool for accelerated catalyst discovery. However, the application of these techniques has been limited by the lack of interpretable and transferable ML models. In this work, we propose a curriculum-based training (CBT) philosophy to systematically develop reactive machine learning potentials (rMLPs) for high-throughput screening of zeolite catalysts. Our CBT approach combines several different types of calculations to gradually teach the ML model about the relevant regions of the reactive potential energy surface. The resulting rMLPs are accurate, transferable, and interpretable. We further demonstrate the effectiveness of this approach by exhaustively screening thousands of [CuOCu]2+ sites across hundreds of Cu-zeolites for the industrially relevant methane activation reaction. Specifically, this large-scale analysis of the entire International Zeolite Association (IZA) database identifies a set of previously unexplored zeolites (i.e., MEI, ATN, EWO, and CAS) that show the highest ensemble-averaged rates for [CuOCu]2+-catalyzed methane activation. We believe that this CBT philosophy can be generally applied to other zeolite-catalyzed reactions and, subsequently, to other types of heterogeneous catalysts. Thus, this represents an important step toward overcoming the long-standing barriers within the computational heterogeneous catalysis community.
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Affiliation(s)
- Jiawei Guo
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Tyler Sours
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Sam Holton
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Chenghan Sun
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ambarish R. Kulkarni
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
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10
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Liu L, Lu J, Yang Y, Ruettinger W, Gao X, Wang M, Lou H, Wang Z, Liu Y, Tao X, Li L, Wang Y, Li H, Zhou H, Wang C, Luo Q, Wu H, Zhang K, Ma J, Cao X, Wang L, Xiao FS. Dealuminated Beta zeolite reverses Ostwald ripening for durable copper nanoparticle catalysts. Science 2024; 383:94-101. [PMID: 38127809 DOI: 10.1126/science.adj1962] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
Copper nanoparticle-based catalysts have been extensively applied in industry, but the nanoparticles tend to sinter into larger ones in the chemical atmospheres, which is detrimental to catalyst performance. In this work, we used dealuminated Beta zeolite to support copper nanoparticles (Cu/Beta-deAl) and showed that these particles become smaller in methanol vapor at 200°C, decreasing from ~5.6 to ~2.4 nanometers in diameter, which is opposite to the general sintering phenomenon. A reverse ripening process was discovered, whereby migratable copper sites activated by methanol were trapped by silanol nests and the copper species in the nests acted as new nucleation sites for the formation of small nanoparticles. This feature reversed the general sintering channel, resulting in robust catalysts for dimethyl oxalate hydrogenation performed with supported copper nanoparticles for use in industry.
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Affiliation(s)
- Lujie Liu
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiaye Lu
- Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yahui Yang
- BASF Advanced Chemicals Co., Ltd., Shanghai 200137, China
| | | | - Xinhua Gao
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Ming Wang
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
| | - Hao Lou
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Zhandong Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Yifeng Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xin Tao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Lina Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Yong Wang
- Center of Electron Microscopy and State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hangjie Li
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hang Zhou
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chengtao Wang
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qingsong Luo
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Huixin Wu
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Kaidi Zhang
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiabi Ma
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
| | - Xiaoming Cao
- Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liang Wang
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Feng-Shou Xiao
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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11
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Zhang K, Dou X, Hou H, Zhou Z, Lopez-Haro M, Meira DM, Liu P, He P, Liu L. Generation of Subnanometer Metal Clusters in Silicoaluminate Zeolites as Bifunctional Catalysts. JACS AU 2023; 3:3213-3226. [PMID: 38034962 PMCID: PMC10685439 DOI: 10.1021/jacsau.3c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 12/02/2023]
Abstract
Zeolite-encapsulated subnanometer metal catalysts are an emerging class of solid catalysts with superior performances in comparison to metal catalysts supported on open-structure solid carriers. Currently, there is no general synthesis methodology for the encapsulation of subnanometer metal catalysts in different zeolite structures. In this work, we will show a general synthesis method for the encapsulation of subnanometer metal clusters (Pt, Pd, and Rh) within various silicoaluminate zeolites with different topologies (MFI, CHA, TON, MOR). The successful generation of subnanometer metal species in silicoaluminate zeolites relies on the introduction of Sn, which can suppress the migration of subnanometer metal species during high-temperature oxidation-reduction treatments according to advanced electron microscopy and spectroscopy characterizations. The advantage of encapsulated subnanometer Pt catalysts in silicoaluminate zeolites is reflected in the direct coupling of ethane and benzene for production of ethylbenzene, in which the Pt and the acid sites work in a synergistic way.
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Affiliation(s)
- Kun Zhang
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaomeng Dou
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huaming Hou
- National
Energy Center for Coal to Clean Fuels, Synfuels
China Technology Co., Ltd., Beijing 101407, China
| | - Ziyu Zhou
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Miguel Lopez-Haro
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz 11519, Spain
| | - Debora M. Meira
- CLS@APS
sector
20, Advanced Photon Source, Argonne National
Laboratory, 9700 S. Cass
Avenue, Argonne, Illinois 60439, United States
- Canadian
Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Ping Liu
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Peng He
- State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National
Energy Center for Coal to Clean Fuels, Synfuels
China Technology Co., Ltd., Beijing 101407, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Lichen Liu
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
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12
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Groppo E, Rojas-Buzo S, Bordiga S. The Role of In Situ/ Operando IR Spectroscopy in Unraveling Adsorbate-Induced Structural Changes in Heterogeneous Catalysis. Chem Rev 2023; 123:12135-12169. [PMID: 37882638 PMCID: PMC10636737 DOI: 10.1021/acs.chemrev.3c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Indexed: 10/27/2023]
Abstract
Heterogeneous catalysts undergo thermal- and/or adsorbate-induced dynamic changes under reaction conditions, which consequently modify their catalytic behavior. Hence, it is increasingly crucial to characterize the properties of a catalyst under reaction conditions through the so-called "operando" approach. Operando IR spectroscopy is probably one of the most ubiquitous and versatile characterization methods in the field of heterogeneous catalysis, but its potential in identifying adsorbate- and thermal-induced phenomena is often overlooked in favor of other less accessible methods, such as XAS spectroscopy and high-resolution microscopy. Without detracting from these techniques, and while aware of the enormous value of a multitechnique approach, the purpose of this Review is to show that IR spectroscopy alone can provide relevant information in this field. This is done by discussing a few selected case studies from our own research experience, which belong to the categories of both "single-site"- and nanoparticle-based catalysts.
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Affiliation(s)
- Elena Groppo
- Department of Chemistry,
NIS Centre and INSTM, University of Torino, via Giuria 7, 10125 Turin, Italy
| | - Sergio Rojas-Buzo
- Department of Chemistry,
NIS Centre and INSTM, University of Torino, via Giuria 7, 10125 Turin, Italy
| | - Silvia Bordiga
- Department of Chemistry,
NIS Centre and INSTM, University of Torino, via Giuria 7, 10125 Turin, Italy
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13
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Liu L, Corma A. Bimetallic Sites for Catalysis: From Binuclear Metal Sites to Bimetallic Nanoclusters and Nanoparticles. Chem Rev 2023; 123:4855-4933. [PMID: 36971499 PMCID: PMC10141355 DOI: 10.1021/acs.chemrev.2c00733] [Citation(s) in RCA: 57] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Indexed: 03/29/2023]
Abstract
Heterogeneous bimetallic catalysts have broad applications in industrial processes, but achieving a fundamental understanding on the nature of the active sites in bimetallic catalysts at the atomic and molecular level is very challenging due to the structural complexity of the bimetallic catalysts. Comparing the structural features and the catalytic performances of different bimetallic entities will favor the formation of a unified understanding of the structure-reactivity relationships in heterogeneous bimetallic catalysts and thereby facilitate the upgrading of the current bimetallic catalysts. In this review, we will discuss the geometric and electronic structures of three representative types of bimetallic catalysts (bimetallic binuclear sites, bimetallic nanoclusters, and nanoparticles) and then summarize the synthesis methodologies and characterization techniques for different bimetallic entities, with emphasis on the recent progress made in the past decade. The catalytic applications of supported bimetallic binuclear sites, bimetallic nanoclusters, and nanoparticles for a series of important reactions are discussed. Finally, we will discuss the future research directions of catalysis based on supported bimetallic catalysts and, more generally, the prospective developments of heterogeneous catalysis in both fundamental research and practical applications.
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Affiliation(s)
- Lichen Liu
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Avelino Corma
- Instituto
de Tecnología Química, Universitat
Politècnica de València−Consejo Superior de Investigaciones
Científicas (UPV-CSIC), Avenida de los Naranjos s/n, Valencia 46022, Spain
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14
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Marino S, Wei L, Cortes-Reyes M, Cheng Y, Laing P, Cavataio G, Paolucci C, Epling W. Rhodium Catalyst Structural Changes during, and Their Impacts on the Kinetics of, CO Oxidation. JACS AU 2023; 3:459-467. [PMID: 36873703 PMCID: PMC9976345 DOI: 10.1021/jacsau.2c00595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Catalysts can undergo structural changes during the reaction, affecting the number and/or the shape of active sites. For example, Rh can undergo interconversion between nanoparticles and single atoms when CO is present in the reaction mixture. Therefore, calculating a turnover frequency in such cases can be challenging as the number of active sites can change depending on the reaction conditions. Here, we use CO oxidation kinetics to track Rh structural changes occurring during the reaction. The apparent activation energy, considering the nanoparticles as the active sites, was constant in different temperature regimes. However, in a stoichiometric excess of O2, there were observed changes in the pre-exponential factor, which we link to changes in the number of active Rh sites. An excess of O2 enhanced CO-induced Rh nanoparticle disintegration into single atoms, affecting catalyst activity. The temperature at which these structural changes occur depend on Rh particle size, with small particle sizes disintegrating at higher temperature, relative to the temperature required to break apart bigger particles. Rh structural changes were also observed during in situ infrared spectroscopic studies. Combining CO oxidation kinetics and spectroscopic studies allowed us to calculate the turnover frequency before and after nanoparticle redispersion into single atoms.
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Affiliation(s)
- Silvia Marino
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - Lai Wei
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - Marina Cortes-Reyes
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - Yisun Cheng
- Research
and Advanced Engineering, Ford Motor Company, Dearborn, Michigan 48124, United States
| | - Paul Laing
- Research
and Advanced Engineering, Ford Motor Company, Dearborn, Michigan 48124, United States
| | - Giovanni Cavataio
- Research
and Advanced Engineering, Ford Motor Company, Dearborn, Michigan 48124, United States
| | - Christopher Paolucci
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - William Epling
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
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15
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Vicchio SP, Chen Z, Chapman KW, Getman RB. Computational and Experimental Characterization of the Ligand Environment of a Ni-Oxo Catalyst Supported in the Metal-Organic Framework NU-1000. J Am Chem Soc 2023; 145:2852-2859. [PMID: 36693214 DOI: 10.1021/jacs.2c10554] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Heterogeneous catalysts exhibit significant changes in composition due to the influence of operating conditions, and these compositional changes can have dramatic effects on catalytic performance. For traditional bulk metal heterogeneous catalysts, relationships between composition and catalytic operating conditions are well documented. However, the influence of operating conditions on the compositions of single-site heterogeneous catalysts remains largely unresolved. To address this, we report a combined computational and experimental characterization of a Ni oxo catalyst under catalytic hydrogenation conditions. Specifically, pair distribution function (PDF) analysis is combined with ab initio thermodynamic modeling to investigate ligand environments present on a Ni oxo cluster supported in the metal-organic framework NU-1000. Comparisons of the experimentally observed and simulated Ni-O coordination numbers and Ni-O, Ni···Ni, and Ni···Zr distances provide insight into the Ni ligand environment under H2 (g). These comparisons suggest significant OH and H2O content and, further, that different Ni ions within the cluster and/or NU-1000 structure may comprise subtly different numbers of these ligands. Further, the observation of significant H2O content under H2 (g) suggests that the NU-1000 support supplies H2O to the cluster. Examples of ligand environments that could lead to the observed PDFs are provided. The combination of simulations and experiments provides new insights into the ligand environment for Ni-NU-1000 catalysts that will be useful for understanding the ligand environments of other single-site Ni catalysts as well.
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Affiliation(s)
- Stephen P Vicchio
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina29634, United States
| | - Zhihengyu Chen
- Department of Chemistry, Stony Brook University, Stony Brook, New York11794, United States
| | - Karena W Chapman
- Department of Chemistry, Stony Brook University, Stony Brook, New York11794, United States
| | - Rachel B Getman
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina29634, United States
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16
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Rana R, Vila FD, Kulkarni AR, Bare SR. Bridging the Gap between the X-ray Absorption Spectroscopy and the Computational Catalysis Communities in Heterogeneous Catalysis: A Perspective on the Current and Future Research Directions. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rachita Rana
- Department of Chemical Engineering, University of California, Davis, California95616, United States
| | - Fernando D. Vila
- Department of Physics, University of Washington, Seattle, Washington98195, United States
| | - Ambarish R. Kulkarni
- Department of Chemical Engineering, University of California, Davis, California95616, United States
| | - Simon R. Bare
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California94025, United States
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