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Jing R, Lu X, Wang J, Xiong J, Qiao Y, Zhang R, Yu Z. CeO 2-Based Frustrated Lewis Pairs via Defective Engineering: Formation Theory, Site Characterization, and Small Molecule Activation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310926. [PMID: 38239093 DOI: 10.1002/smll.202310926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/02/2024] [Indexed: 06/27/2024]
Abstract
Activation of small molecules is considered to be a central concern in the theoretical investigation of environment- and energy-related catalytic conversions. Sub-nanostructured frustrated Lewis pairs (FLPs) have been an emerging research hotspot in recent years due to their advantages in small molecule activation. Although the progress of catalytic applications of FLPs is increasingly reported, the fundamental theories related to the structural formation, site regulation, and catalytic mechanism of FLPs have not yet been fully developed. Given this, it is attempted to demonstrate the underlying theory of FLPs formation, corresponding regulation methods, and its activation mechanism on small molecules using CeO2 as the representative metal oxide. Specifically, this paper presents three fundamental principles for constructing FLPs on CeO2 surfaces, and feasible engineering methods for the regulation of FLPs sites are presented. Furthermore, cases where typical small molecules (e.g., hydrogen, carbon dioxide, methane oxygen, etc.) are activated over FLPs are analyzed. Meanwhile, corresponding future challenges for the development of FLPs-centered theory are presented. The insights presented in this paper may contribute to the theories of FLPs, which can potentially provide inspiration for the development of broader environment- and energy-related catalysis involving small molecule activation.
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Affiliation(s)
- Run Jing
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P.R. China
| | - Xuebin Lu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P.R. China
- School of Ecology and Environment, Tibet University, Lhasa, 850000, P.R. China
| | - Jingfei Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P.R. China
| | - Jian Xiong
- School of Ecology and Environment, Tibet University, Lhasa, 850000, P.R. China
| | - Yina Qiao
- School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, P.R. China
| | - Rui Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, P.R. China
| | - Zhihao Yu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P.R. China
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Zou Y, Xia Z, Wang Y, Liu Y, Zhang S, Qu Y. Regulation of frustrated Lewis pairs on CeO 2 facilitates tandem transformation of styrene and CO 2. Chem Commun (Camb) 2023; 59:11855-11858. [PMID: 37721202 DOI: 10.1039/d3cc03219a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
The frustrated Lewis pair (FLP) site of (Ce, Ce)-O on the CeO2(110) surface undergoes reconstruction to form (La, Ce)-O upon La-doping. The FLP site of (La, Ce)-O with the tailored local Lewis acid-base property and increased spatial distance between the Lewis acid and base facilitates the tandem transformation of styrene and CO2 through the weakened adsorption of CO2 while maintaining activation.
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Affiliation(s)
- Yong Zou
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Zhaoming Xia
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - You Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Yuxuan Liu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Sai Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Yongquan Qu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
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Liang Y, Zhang Z, Su X, Feng X, Xing S, Liu W, Huang R, Liu Y. Coordination Defect-Induced Frustrated Lewis Pairs in Polyoxo-metalate-Based Metal-Organic Frameworks for Efficient Catalytic Hydrogenation. Angew Chem Int Ed Engl 2023; 62:e202309030. [PMID: 37488072 DOI: 10.1002/anie.202309030] [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: 06/27/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 07/26/2023]
Abstract
Precise control of the structure and spatial distance of Lewis acid (LA) and Lewis base (LB) sites in a porous system to construct efficient solid frustrated Lewis pair (FLP) catalyst is vital for industrial application but remains challenging. Herein, we constructed FLP sites in a polyoxometalate (POM)-based metal-organic framework (MOF) by introducing coordination-defect metal nodes (LA) and surface-basic POM with abundant oxygen (LB). The well-defined and unique spatial conformation of the defective POM-based MOF ensure that the distance between LA and LB is at ~4.3 Å, a suitable distance to activate H2 . This FLP catalyst can heterolytically dissociate H2 into active Hδ- , thus exhibiting high activity in hydrogenation, which is 55 and 2.7 times as high as that of defect-free POM-based MOF and defective MOF without POM, respectively. This work provides a new avenue toward precise design multi-site catalyst to achieve specific activation of target substrate for synergistic catalysis.
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Affiliation(s)
- Yan Liang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Zhong Zhang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Xiaofang Su
- School of Chemistry and Chemical Engineering, Henan Normal University, Henan, 453007, China
| | - Xiao Feng
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Songzhu Xing
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Wei Liu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Rui Huang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yiwei Liu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
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Yan H, Liu B, Zhou X, Meng F, Zhao M, Pan Y, Li J, Wu Y, Zhao H, Liu Y, Chen X, Li L, Feng X, Chen D, Shan H, Yang C, Yan N. Enhancing polyol/sugar cascade oxidation to formic acid with defect rich MnO 2 catalysts. Nat Commun 2023; 14:4509. [PMID: 37495568 PMCID: PMC10372030 DOI: 10.1038/s41467-023-40306-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2023] Open
Abstract
Oxidation of renewable polyol/sugar into formic acid using molecular O2 over heterogeneous catalysts is still challenging due to the insufficient activation of both O2 and organic substrates on coordination-saturated metal oxides. In this study, we develop a defective MnO2 catalyst through a coordination number reduction strategy to enhance the aerobic oxidation of various polyols/sugars to formic acid. Compared to common MnO2, the tri-coordinated Mn in the defective MnO2 catalyst displays the electronic reconstruction of surface oxygen charge state and rich surface oxygen vacancies. These oxygen vacancies create more Mnδ+ Lewis acid site together with nearby oxygen as Lewis base sites. This combined structure behaves much like Frustrated Lewis pairs, serving to facilitate the activation of O2, as well as C-C and C-H bonds. As a result, the defective MnO2 catalyst shows high catalytic activity (turnover frequency: 113.5 h-1) and formic acid yield (>80%) comparable to noble metal catalysts for glycerol oxidation. The catalytic system is further extended to the oxidation of other polyols/sugars to formic acid with excellent catalytic performance.
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Affiliation(s)
- Hao Yan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Engineering Drive 4, 117585, Singapore
| | - Bowen Liu
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD, Liverpool, UK
| | - Xin Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100, China
| | - Fanyu Meng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Mingyue Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yue Pan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Jie Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yining Wu
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China
| | - Hui Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yibin Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China.
| | - Xiaobo Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Lina Li
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Xiang Feng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China.
| | - De Chen
- Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, 7491, Norway
| | - Honghong Shan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Chaohe Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Engineering Drive 4, 117585, Singapore.
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Catalytic ozonation of ketoprofen by defective boron nitride. CATAL COMMUN 2023. [DOI: 10.1016/j.catcom.2023.106623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
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Chen H, Jiang DE, Yang Z, Dai S. Engineering Nanostructured Interfaces of Hexagonal Boron Nitride-Based Materials for Enhanced Catalysis. Acc Chem Res 2023; 56:52-65. [PMID: 36378327 DOI: 10.1021/acs.accounts.2c00564] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
ConspectusHexagonal boron nitrides (h-BNs) are attractive two-dimensional (2D) nanomaterials that consist of alternating B and N atoms and layered honeycomb-like structures similar to graphene. They have exhibited unique properties and promising application potentials in the field of energy storage and transformation. Recent advances in utilizing h-BN as a metal-free catalyst in the oxidative dehydrogenation of propane have triggered broad interests in exploring h-BN in catalysis. However, h-BN-based materials as robust nanocatalysts in heterogeneous catalysis are still underexplored because of the limited methodologies capable of affording h-BN with controllable crystallinity, abundant porosity, high purity, and defect engineering, which played important roles in tuning their catalytic performance. In this Account, our recent progress in addressing the above issues will be highlighted, including the synthesis of high-quality h-BN-based nanomaterials via both bottom-up and top-down pathways and their catalytic utilization as metal-free catalysts or as supports to tune the interfacial electronic properties on the metal nanoparticles (NPs). First, we will focus on the large-scale fabrication of h-BN nanosheets (h-BNNSs) with high crystallinity, improved surface area, satisfactory purity, and tunable defects. h-BN derived from the traditional approaches using boron trioxide and urea as the starting materials generally contains carbon/oxygen impurities and has low crystallinity. Several new strategies were developed to address the issues. Using bulk h-BN as the precursor via gas exfoliation in liquid nitrogen, single- or few-layered h-BNNS with abundant defects could be generated. Amorphous h-BN precursors could be converted to h-BN nanosheets with high crystallinity assisted by a magnesium metallic flux via a successive dissolution/precipitation/crystallization procedure. The as-fabricated h-BNNS featured high crystallinity and purity as well as abundant porosity. An ionothermal metathesis procedure was developed using inorganic molten salts (NaNH2 and NaBH4) as the precursors. The h-BN scaffolds could be produced on a large scale with high yield, and the as-afforded materials possessed high purity and crystallinity. Second, utilization of the as-prepared h-BN library as metal-free catalysts in dehydrogenation and hydrogenation reactions will be summarized, in which they exhibited enhanced catalytic activity over the counterparts from the previous synthesis method. Third, the interface modulation between metal NPs with the as-prepared defects' abundant h-BN support will be highlighted. The h-BN-based strong metal-support interaction (SMSI) nanocatalysts were constructed without involving reducible metal oxides via the ionothermal procedure we developed by deploying specific inorganic metal salts, acting as robust nanocatalysts in CO oxidation. Under conditions simulated for practical exhaust systems, promising catalytic efficiency together with high thermal stability and sintering resistance was achieved. Across all of these examples, unique insights into structures, defects, and interfaces that emerge from in-depth characterization through microscopy, spectroscopy, and diffraction will be highlighted.
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Affiliation(s)
- Hao Chen
- Department of Chemistry, Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, Tennessee 37996, United States.,College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - De-En Jiang
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Zhenzhen Yang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sheng Dai
- Department of Chemistry, Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, Tennessee 37996, United States.,Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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Wan Q, Lin S, Guo H. Frustrated Lewis Pairs in Heterogeneous Catalysis: Theoretical Insights. Molecules 2022; 27:molecules27123734. [PMID: 35744860 PMCID: PMC9227528 DOI: 10.3390/molecules27123734] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 12/10/2022] Open
Abstract
Frustrated Lewis pair (FLP) catalysts have attracted much recent interest because of their exceptional ability to activate small molecules in homogeneous catalysis. In the past ten years, this unique catalysis concept has been extended to heterogeneous catalysis, with much success. Herein, we review the recent theoretical advances in understanding FLP-based heterogeneous catalysis in several applications, including metal oxides, functionalized surfaces, and two-dimensional materials. A better understanding of the details of the catalytic mechanism can help in the experimental design of novel heterogeneous FLP catalysts.
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Affiliation(s)
- Qiang Wan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China;
| | - Sen Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China;
- Correspondence: (S.L.); (H.G.)
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131, USA
- Correspondence: (S.L.); (H.G.)
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