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Yu S, Liu Z, Lyu JM, Guo CM, Yang XY, Jiang P, Wang YL, Hu ZY, Sun MH, Li Y, Chen LH, Su BL. Engineering surface framework TiO 6 single sites for unprecedented deep oxidative desulfurization. Natl Sci Rev 2024; 11:nwae085. [PMID: 38577670 PMCID: PMC10989657 DOI: 10.1093/nsr/nwae085] [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: 11/21/2023] [Revised: 02/14/2024] [Accepted: 03/05/2024] [Indexed: 04/06/2024] Open
Abstract
Catalytic oxidative desulfurization (ODS) using titanium silicate catalysts has emerged as an efficient technique for the complete removal of organosulfur compounds from automotive fuels. However, the precise control of highly accessible and stable-framework Ti active sites remains highly challenging. Here we reveal for the first time by using density functional theory calculations that framework hexa-coordinated Ti (TiO6) species of mesoporous titanium silicates are the most active sites for ODS and lead to a lower-energy pathway of ODS. A novel method to achieve highly accessible and homogeneously distributed framework TiO6 active single sites at the mesoporous surface has been developed. Such surface framework TiO6 species exhibit an exceptional ODS performance. A removal of 920 ppm of benzothiophene is achieved at 60°C in 60 min, which is 1.67 times that of the best catalyst reported so far. For bulky molecules such as 4,6-dimethyldibenzothiophene (DMDBT), it takes only 3 min to remove 500 ppm of DMDBT at 60°C with our catalyst, which is five times faster than that with the current best catalyst. Such a catalyst can be easily upscaled and could be used for concrete industrial application in the ODS of bulky organosulfur compounds with minimized energy consumption and high reaction efficiency.
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Affiliation(s)
- Shen Yu
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Zhan Liu
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
| | - Jia-Min Lyu
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Chun-Mu Guo
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Xiao-Yu Yang
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Peng Jiang
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Yi-Long Wang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Zhi-Yi Hu
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
| | - Ming-Hui Sun
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Yu Li
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Li-Hua Chen
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Bao-Lian Su
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
- Laboratory of Inorganic Materials Chemistry, University of Namur, Namur B-5000, Belgium
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Suib SL, Přech J, Szaniawska E, Čejka J. Recent Advances in Tetra- (Ti, Sn, Zr, Hf) and Pentavalent (Nb, V, Ta) Metal-Substituted Molecular Sieve Catalysis. Chem Rev 2023; 123:877-917. [PMID: 36547404 DOI: 10.1021/acs.chemrev.2c00509] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Metal substitution of molecular sieve systems is a major driving force in developing novel catalytic processes to meet current demands of green chemistry concepts and to achieve sustainability in the chemical industry and in other aspects of our everyday life. The advantages of metal-substituted molecular sieves include high surface areas, molecular sieving effects, confinement effects, and active site and morphology variability and stability. The present review aims to comprehensively and critically assess recent advances in the area of tetra- (Ti, Sn, Zr, Hf) and pentavalent (V, Nb, Ta) metal-substituted molecular sieves, which are mainly characterized for their Lewis acidic active sites. Metal oxide molecular sieve materials with properties similar to those of zeolites and siliceous molecular sieve systems are also discussed, in addition to relevant studies on metal-organic frameworks (MOFs) and some composite MOF systems. In particular, this review focuses on (i) synthesis aspects determining active site accessibility and local environment; (ii) advances in active site characterization and, importantly, quantification; (iii) selective redox and isomerization reaction applications; and (iv) photoelectrocatalytic applications.
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Affiliation(s)
- Steven L Suib
- Departments of Chemistry and Chemical and Biomolecular Engineering, and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Jan Přech
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Ewelina Szaniawska
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Jiří Čejka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Prague 2, Czech Republic
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3
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Zhang Z, Chu Q, Sun Y, Wang H, Lu D, Liu Y, Xiao H, Wang P, Cui H, Wang M. Green Synthesis of 2‐Nitropropane via Ammoximation‐Oxidation over Organic Base Modified TS‐1 Catalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202202475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhiqiang Zhang
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Qingyan Chu
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Yuan Sun
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Hao Wang
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Deming Lu
- Shandong Qilu Petrochemical Engineering Co. Ltd No.171, Huangong Road, Linzi Zibo 255400 China
| | - Yuying Liu
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Haibin Xiao
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Ping Wang
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Hongyou Cui
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
| | - Ming Wang
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 P. R. China
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Lin Y, Xu D, Chen Z, Yu Y, Li F, Huang X, Liu Y, He M. P-modified Deactivated TS-1: A Benign Catalyst for the MTP Reaction. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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5
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Smeets V, Gaigneaux EM, Debecker DP. Titanosilicate Epoxidation Catalysts: A Review of Challenges and Opportunities. ChemCatChem 2022. [DOI: 10.1002/cctc.202101132] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Valentin Smeets
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1, Box L4.01.09 1348 Louvain-la-Neuve Belgium
| | - Eric M. Gaigneaux
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1, Box L4.01.09 1348 Louvain-la-Neuve Belgium
| | - Damien P. Debecker
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1, Box L4.01.09 1348 Louvain-la-Neuve Belgium
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Tong W, Yin J, Ding L, Xu H, Wu P. Modified Ti-MWW Zeolite as a Highly Efficient Catalyst for the Cyclopentene Epoxidation Reaction. Front Chem 2020; 8:585347. [PMID: 33195081 PMCID: PMC7581914 DOI: 10.3389/fchem.2020.585347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/31/2020] [Indexed: 11/18/2022] Open
Abstract
The liquid-phase epoxidation of cyclopentene (CPE) was performed in the Ti-zeolite/H2O2 catalytic system for the clean synthesis of cyclopentene oxide. Among all the Ti-zeolites (Ti-Beta, Ti-MOR, Ti-MCM-68, TS-1, TS-2, and Ti-MWW) investigated in the present study, Ti-MWW provided relatively lower CPE conversion of 13% due to the diffusion constrains but a higher CPO selectivity of 99.5%. The catalytic performance of Ti-MWW was significantly enhanced by piperidine (PI) treatment, with the CPE conversion and CPO selectivity increased to 97.8 and 99.9%, respectively. The structural rearrangement upon PI treatment converted the 3-dimensional (3D) MWW structure to a 2D lamellar one, which enlarged the interlayer space and greatly alleviated the diffusion constrains of cyclic cyclopentene. Furthermore, the newly constructed “open site” six-coordinated Ti active sites with PI as the ligand exhibited higher catalytic activity. The two factors contributed to more significant enhancement of the activity upon PI-assisted structural arrangement compared to the cases in linear alkenes.
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Affiliation(s)
- Wen Tong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Jinpeng Yin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Luoyi Ding
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Hao Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Peng Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
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7
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Goyal R, Singh O, Agrawal A, Samanta C, Sarkar B. Advantages and limitations of catalytic oxidation with hydrogen peroxide: from bulk chemicals to lab scale process. CATALYSIS REVIEWS 2020. [DOI: 10.1080/01614940.2020.1796190] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Reena Goyal
- Refinery Technology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
- Department of Chemical Engineering, Indian Institute of Technology-Roorkee, Uttarakhand, India
| | - Omvir Singh
- Upstream & Wax Rheology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
| | - Ankit Agrawal
- Upstream & Wax Rheology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
| | - Chanchal Samanta
- Corporate R&D Center, Bharat Petroleum Corporation Limited, Greater Noida, India
| | - Bipul Sarkar
- Upstream & Wax Rheology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
- SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, Gyeong Gi-Do, South Korea
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8
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Xu H, Guan Y, Lu X, Yin J, Li X, Zhou D, Wu P. Relation of Selective Oxidation Catalytic Performance to Microenvironment of Ti IV Active Site Based on Isotopic Labeling. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00439] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hao Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai, 200062, P.R. China
| | - Yejun Guan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai, 200062, P.R. China
| | - Xinqing Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai, 200062, P.R. China
| | - Jinpeng Yin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai, 200062, P.R. China
| | - Xiaohong Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai, 200062, P.R. China
| | - Danhong Zhou
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning Province 116029, P. R. China
| | - Peng Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai, 200062, P.R. China
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9
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Parodi AR, Merlo C, Córdoba A, Palopoli C, Ferreyra J, Signorella S, Ferreira ML, Magario I. Application of metal complexes as biomimetic catalysts on glycerol oxidation. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2018.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Solé-Daura A, Zhang T, Fouilloux H, Robert C, Thomas CM, Chamoreau LM, Carbó JJ, Proust A, Guillemot G, Poblet JM. Catalyst Design for Alkene Epoxidation by Molecular Analogues of Heterogeneous Titanium-Silicalite Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05147] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Albert Solé-Daura
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Teng Zhang
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, F-75005 Paris, France
| | - Hugo Fouilloux
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, F-75005 Paris, France
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Carine Robert
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Christophe M. Thomas
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Lise-Marie Chamoreau
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, F-75005 Paris, France
| | - Jorge J. Carbó
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Anna Proust
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, F-75005 Paris, France
| | - Geoffroy Guillemot
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, F-75005 Paris, France
| | - Josep M. Poblet
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
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11
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Wang B, Guo T, Peng X, Chen F, Lin M, Xia C, Zhu B, Liao W, Luo Y, Shu X. Molybdenum-Confined Hierarchical Titanium Silicalite-1: The Synthesis, Characterization, and Catalytic Activity in Alkene Oxidation. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05340] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Baorong Wang
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Tao Guo
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
| | - Xinxin Peng
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Feibiao Chen
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
| | - Min Lin
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Changjiu Xia
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Bin Zhu
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Weilin Liao
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
| | - Yibin Luo
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Xingtian Shu
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
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Ji X, Wang Y, Fujii T, Otomo R, Kondo JN, Yokoi T. Evaluation of Ti Distribution in Zeolite Framework Based on the Catalytic Activity for Alkene Epoxidation. CHEM LETT 2019. [DOI: 10.1246/cl.190387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xinyi Ji
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Yunan Wang
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Tsubasa Fujii
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Ryoichi Otomo
- Faculty of Environmental Earth Science, Hokkaido University, Nishi 5, Kita 10, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Junko N. Kondo
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Toshiyuki Yokoi
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
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13
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Liu H, Yue Y, Shen T, Wang W, Li T, Bao X. Transformation and Crystallization Behaviors of Titanium Species in Synthesizing Ti-ZSM-5 Zeolites from Natural Rectorite Mineral. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01826] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiyan Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, People’s Republic of China
| | - Yuanyuan Yue
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Tong Shen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, People’s Republic of China
| | - Wanwan Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, People’s Republic of China
| | - Tiesen Li
- East China Design Institute, PetroChina Company, No. 21 Huayan Road, Qingdao 266071, People’s Republic of China
| | - Xiaojun Bao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, People’s Republic of China
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Dynamic Reorganization and Confinement of Ti IV Active Sites Controls Olefin Epoxidation Catalysis on Two-Dimensional Zeotypes. J Am Chem Soc 2019; 141:7090-7106. [PMID: 30955340 DOI: 10.1021/jacs.9b02160] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of dynamic reorganization and confinement of isolated TiIV catalytic centers supported on silicates is investigated for olefin epoxidation. Active sites consist of grafted single-site calix[4]arene-TiIV centers or their calcined counterparts. Their location is synthetically controlled to be either unconfined at terminal T-atom positions (denoted as type-(i)) or within confining 12-MR pockets (denoted as type-(ii); diameter ∼7 Å, volume ∼185 Å3) composed of hemispherical cavities on the external surface of zeotypes with *-SVY topology. Electronic structure calculations (density functional theory) indicate that active sites consist of cooperative assemblies of TiIV centers and silanols. When active sites are located at unconfined type-(i) environments, the rate constants for cyclohexene epoxidation (323 K, 0.05 mM TiIV, 160 mM cyclohexene, 24 mM tert-butyl hydroperoxide) are 9 ± 2 M-2 s-1; whereas within confining type-(ii) 12-MR pockets, there is a ∼5-fold enhancement to 48 ± 8 M-2 s-1. When a mixture of both environments is initially present in the catalyst resting state, the rate constants reflect confining environments exclusively (40 ± 11 M-2 s-1), indicating that dynamic reorganization processes lead to the preferential location of active sites within 12-MR pockets. While activation enthalpies are Δ H‡app = 43 ± 1 kJ mol-1 irrespective of active site location, confining environments exhibit diminished entropic barriers (Δ S‡app = -68 J mol-1 K-1 for unconfined type-(i) vs -56 J mol-1 K-1 for confining type-(ii)), indicating that confinement leads to more facile association of reactants at active sites to form transition state structures (volume ∼ 225 Å3). These results open new opportunities for controlling reactivity on surfaces through partial confinement on shallow external-surface pockets, which are accessible to molecules that are too bulky to benefit from traditional confinement within micropores.
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Guo T, Wang B, Peng X, Lin M, Zhu B, Zhang Y, Xia C, Liao W, Shu X. Enhanced Activity of Hierarchical TS-1 Synthesized via Tuning Porosity and Titanium Coordination. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00467] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tao Guo
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
| | - Baorong Wang
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
| | - Xinxin Peng
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Min Lin
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Bin Zhu
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Yao Zhang
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Changjiu Xia
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Weilin Liao
- National Engineering Research Center for Carbonhydrate Synthesis, Jiangxi Normal University, Nanchang 330027, China
| | - Xingtian Shu
- State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
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Abstract
The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur is found in bulky thiophenic structures difficult to remove using conventional high pressure hydrodesulfurization process. However they appeared more reactive in oxidative desulfurization (ODS) process, carried out at mild conditions without hydrogen pressure. This review focuses for the first time on the heavy fuels initially containing more than 0.5 wt.%S and upgraded by the ODS process. Different attractive approaches of the literature towards ODS are reported using homogeneous and heterogeneous catalysis. Recent developments in ODS assisted with ultrasound technology and the use of ionic liquid to enhance ODS efficiency will be fully detailed and discussed to better understand their viability when applied to high sulfur content, high viscosity, and high boiling point feeds.
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Bhat GA, Verma S, Rajendran A, Murugavel R. Thermolabile Organotitanium Monoalkyl Phosphates: Synthesis, Structures, and Utility as Epoxidation Catalysts and Single-Source Precursors for TiP 2O 7. Inorg Chem 2018; 57:7644-7654. [PMID: 29906112 DOI: 10.1021/acs.inorgchem.8b00611] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of [Cp*TiCl3] (Cp* = C5Me5) with monoalkyl phosphates (RO)PO3H2 (R = Me, Et, and iPr) in tetrahydrofuran (THF) at 25 °C leads to the formation of binuclear complexes [Cp*2Ti2(μ-O2P(OH)OR)2(μ-O2P(O)OR)2] [R = Me (1), Et (2), and iPr (3)]. On the other hand, the reaction of ( tBuO)2PO2K with [Cp*TiCl3] in acetonitrile or THF results in isolation of either the dinuclear [Cp*2Ti2(μ-O2P(OH)O tBu)2(μ-O2P(O)O tBu)2] (4) or the trinuclear titanophosphate [Cp*3Ti3(μ-O3PO tBu)2(μ-O)2(μ-O2P(O tBu)2)] (5), respectively. The formation of compounds 4 and 5 is facilitated by partial hydrolysis of the tert-butoxy groups of ( tBuO)2PO2K. New titanophosphates 1-5 have been characterized by spectroscopic and analytical methods, and the molecular structures have further been confirmed by single-crystal X-ray diffraction studies. Thermal decomposition studies of 1-5 reveal the initial loss of thermally labile alkyl substituents of the organophosphate ligands, followed by the loss of C5Me5 groups to form an organic-free amorphous titanophosphate in the temperature range 300-500 °C. This material transforms to highly crystalline titanium pyrophosphate TiP2O7 at 800 °C. Compounds 1-5 and the TiP2O7 materials obtained at 300, 500, and 800 °C through the thermal decomposition of 3 have been employed as efficient homogeneous catalysts for the alkene epoxidation reaction. Using hydrogen peroxide as the oxidant in an acetonitrile medium, these catalysts exhibit >90% alkene conversion with >90% epoxide selectivity in 4 h at temperatures below 100 °C.
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Affiliation(s)
- Gulzar A Bhat
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Sonam Verma
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Antony Rajendran
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Ramaswamy Murugavel
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
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18
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Kosinov N, Liu C, Hensen EJM, Pidko EA. Engineering of Transition Metal Catalysts Confined in Zeolites. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2018; 30:3177-3198. [PMID: 29861546 PMCID: PMC5973782 DOI: 10.1021/acs.chemmater.8b01311] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/26/2018] [Indexed: 05/09/2023]
Abstract
Transition metal-zeolite composites are versatile catalytic materials for a wide range of industrial and lab-scale processes. Significant advances in fabrication and characterization of well-defined metal centers confined in zeolite matrixes have greatly expanded the library of available materials and, accordingly, their catalytic utility. In this review, we summarize recent developments in the field from the perspective of materials chemistry, focusing on synthesis, postsynthesis modification, (operando) spectroscopy characterization, and computational modeling of transition metal-zeolite catalysts.
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Affiliation(s)
- Nikolay Kosinov
- Inorganic
Systems Engineering Group, Department of Chemical Engineering, Faculty
of Applied Sciences, Delft University of
Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
- E-mail: (N.K.)
| | - Chong Liu
- Inorganic
Systems Engineering Group, Department of Chemical Engineering, Faculty
of Applied Sciences, Delft University of
Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Emiel J. M. Hensen
- Schuit
Institute of Catalysis, Laboratory of Inorganic Materials Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- E-mail: (E.J.M.H.)
| | - Evgeny A. Pidko
- Inorganic
Systems Engineering Group, Department of Chemical Engineering, Faculty
of Applied Sciences, Delft University of
Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
- TheoMAT
group, ITMO University, Lomonosova str. 9, St. Petersburg 191002, Russia
- E-mail: (E.A.P.)
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19
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Grosso-Giordano NA, Schroeder C, Okrut A, Solovyov A, Schöttle C, Chassé W, Marinković N, Koller H, Zones SI, Katz A. Outer-Sphere Control of Catalysis on Surfaces: A Comparative Study of Ti(IV) Single-Sites Grafted on Amorphous versus Crystalline Silicates for Alkene Epoxidation. J Am Chem Soc 2018; 140:4956-4960. [PMID: 29565124 DOI: 10.1021/jacs.7b11467] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The effect of outer-sphere environment on alkene epoxidation catalysis using an organic hydroperoxide oxidant is demonstrated for calix[4]arene-TiIV single-sites grafted on amorphous vs crystalline delaminated zeotype (UCB-4) silicates as supports. A chelating calix[4]arene macrocyclic ligand helps enforce a constant TiIV inner-sphere, as characterized by UV-visible and X-ray absorption spectroscopies, thus enabling the rigorous comparison of outer-sphere environments across different siliceous supports. These outer-sphere environments are characterized by solid-state 1H NMR spectroscopy to comprise proximally organized silanols confined within 12 membered-ring cups in crystalline UCB-4, and are responsible for up to 5-fold enhancements in rates of epoxidation by TiIV centers.
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Affiliation(s)
- Nicolás A Grosso-Giordano
- Department of Chemical and Biomolecular Engineering , University of California, Berkeley , Berkeley , California 94720 , United States
| | - Christian Schroeder
- Institut für Physikalische Chemie , Westfälische Wilhelms-Universität Münster , Münster 48149 , Germany
| | - Alexander Okrut
- Department of Chemical and Biomolecular Engineering , University of California, Berkeley , Berkeley , California 94720 , United States
| | - Andrew Solovyov
- Department of Chemical and Biomolecular Engineering , University of California, Berkeley , Berkeley , California 94720 , United States
| | - Christian Schöttle
- Department of Chemical and Biomolecular Engineering , University of California, Berkeley , Berkeley , California 94720 , United States
| | - Walter Chassé
- Institut für Physikalische Chemie , Westfälische Wilhelms-Universität Münster , Münster 48149 , Germany
| | - Nebojša Marinković
- Department of Chemical Engineering , Columbia University , New York , New York 10027 , United States
| | - Hubert Koller
- Institut für Physikalische Chemie , Westfälische Wilhelms-Universität Münster , Münster 48149 , Germany
| | - Stacey I Zones
- Chevron Energy Technology Company , Richmond , California 94804 , United States
| | - Alexander Katz
- Department of Chemical and Biomolecular Engineering , University of California, Berkeley , Berkeley , California 94720 , United States
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20
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Bregante DT, Thornburg NE, Notestein JM, Flaherty DW. Consequences of Confinement for Alkene Epoxidation with Hydrogen Peroxide on Highly Dispersed Group 4 and 5 Metal Oxide Catalysts. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03986] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel T. Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Nicholas E. Thornburg
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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21
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Lu T, Zou J, Zhan Y, Yang X, Wen Y, Wang X, Zhou L, Xu J. Highly Efficient Oxidation of Ethyl Lactate to Ethyl Pyruvate Catalyzed by TS-1 Under Mild Conditions. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03558] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Tianliang Lu
- School
of Chemical Engineering and Energy, Zhengzhou University, 100 Kexue
Road, Zhengzhou 450001, People’s Republic of China
- College
of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, People’s Republic of China
| | - Junpeng Zou
- School
of Chemical Engineering and Energy, Zhengzhou University, 100 Kexue
Road, Zhengzhou 450001, People’s Republic of China
| | - Yuzhong Zhan
- School
of Chemical Engineering and Energy, Zhengzhou University, 100 Kexue
Road, Zhengzhou 450001, People’s Republic of China
| | - Xiaomei Yang
- College
of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, People’s Republic of China
| | - Yiqiang Wen
- College
of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, People’s Republic of China
| | - Xiangyu Wang
- College
of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, People’s Republic of China
| | - Lipeng Zhou
- College
of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, People’s Republic of China
| | - Jie Xu
- State
Key Laboratory of Catalysis, Dalian National Laboratory for Clean
Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
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22
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Ikehara Y, Ohno Y, Inagaki S, Kubota Y. Preparation of MSE-type Titanosilicate via Crystallization of Titanoaluminosilicate and Its Catalytic Use for Selective Oxidation of Phenol Using H2O2. CHEM LETT 2017. [DOI: 10.1246/cl.170832] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuya Ikehara
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501
| | - Yuya Ohno
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501
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23
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Přech J. Catalytic performance of advanced titanosilicate selective oxidation catalysts – a review. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2017. [DOI: 10.1080/01614940.2017.1389111] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jan Přech
- Department of Synthesis and Catalysis, J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Prague, Czech Republic
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24
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Finney EE, Finke RG. Catalyst Sintering Kinetics Data: Is There a Minimal Chemical Mechanism Underlying Kinetics Previously Fit by Empirical Power-Law Expressions—and if So, What Are Its Implications? Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02633] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eric E. Finney
- Department
of Chemistry, Pacific Lutheran University, Tacoma, Washington 98447, United States
| | - Richard G. Finke
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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25
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Rivoira L, Martínez ML, Falcón H, Beltramone AR, Campos-Martin JM, Fierro JL, Tartaj P. Probing the Catalytic Activity of Sulfate-Derived Pristine and Post-Treated Porous TiO 2(101) Anatase Mesocrystals by the Oxidative Desulfurization of Dibenzothiophenes. ACS OMEGA 2017; 2:2351-2359. [PMID: 31457584 PMCID: PMC6641028 DOI: 10.1021/acsomega.7b00307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/04/2017] [Indexed: 06/10/2023]
Abstract
Mesocrystals (basically nanostructures showing alignment of nanocrystals well beyond crystal size) are attracting considerable attention for modeling and optimization of functionalities. However, for surface-driven applications (heterogeneous catalysis), only those mesocrystals with excellent textural properties are expected to fulfill their potential. This is especially true for oxidative desulfuration of dibenzothiophenes (hard to desulfurize organosulfur compounds found in fossil fuels). Here, we probe the catalytic activity of anatases for the oxidative desulfuration of dibenzothiophenes under atmospheric pressure and mild temperatures. Specifically, for this study, we have taken advantage of the high stability of the (101) anatase surface to obtain a variety of uniform colloidal mesocrystals (approximately 50 nm) with adequate orientational order and good textural properties (pores around 3-4 nm and surface areas around 200 m2/g). Ultimately, this stability has allowed us to compare the catalytic activity of anatases that expose a high number of aligned single crystal-like surfaces while differing in controllable surface characteristics. Thus, we have established that the type of tetrahedral coordination observed in these anatase mesocrystals is not essential for oxidative desulfuration and that both elimination of sulfates and good textural properties significantly improve the catalytic activity. Furthermore, the most active mesocrystals have been used to model the catalytic reaction in three-(oil-solvent-catalyst) and two-phase (solvent-catalyst) systems. Thus, we have been able to observe that the transfer of DBT from the oil to the solvent phase partially limits the oxidative process and to estimate an apparent activation energy for the oxidative desulfuration reaction of approximately 40 kJ/mol in the two-phase system to avoid mass transfer limitations. Our results clearly establish that (101) anatase mesocrystals with excellent textural properties show adequate stability to withstand several post-treatments without losing their initial mesocrystalline character and therefore could serve as models for catalytic processes different from the one studied here.
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Affiliation(s)
- Lorena
P. Rivoira
- NANOTEC
(Centro de Investigación en Nanociencia y Nanotecnología), Universidad Tecnológica Nacional—Facultad
Regional Córdoba, X5016ZAA Córdoba, Argentina
| | - Maria L. Martínez
- NANOTEC
(Centro de Investigación en Nanociencia y Nanotecnología), Universidad Tecnológica Nacional—Facultad
Regional Córdoba, X5016ZAA Córdoba, Argentina
| | - Horacio Falcón
- NANOTEC
(Centro de Investigación en Nanociencia y Nanotecnología), Universidad Tecnológica Nacional—Facultad
Regional Córdoba, X5016ZAA Córdoba, Argentina
| | - Andrea R. Beltramone
- NANOTEC
(Centro de Investigación en Nanociencia y Nanotecnología), Universidad Tecnológica Nacional—Facultad
Regional Córdoba, X5016ZAA Córdoba, Argentina
| | - Jose M. Campos-Martin
- Energy
and Sustainable Chemistry Group (EQS), Instituto
de Catálisis y Petroleoquímica, CSIC, Marie Curie 2, Cantoblanco, 28049 Madrid, Spain
| | - Jose L.G. Fierro
- Energy
and Sustainable Chemistry Group (EQS), Instituto
de Catálisis y Petroleoquímica, CSIC, Marie Curie 2, Cantoblanco, 28049 Madrid, Spain
| | - Pedro Tartaj
- Instituto
de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
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26
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Özkar S, Finke RG. Palladium(0) Nanoparticle Formation, Stabilization, and Mechanistic Studies: Pd(acac)₂ as a Preferred Precursor, [Bu₄N]₂HPO₄ Stabilizer, plus the Stoichiometry, Kinetics, and Minimal, Four-Step Mechanism of the Palladium Nanoparticle Formation and Subsequent Agglomeration Reactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3699-716. [PMID: 27046305 DOI: 10.1021/acs.langmuir.6b00013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Palladium(0) nanoparticles continue to be important in the field of catalysis. However, and despite the many prior reports of Pd(0)n nanoparticles, missing is a study that reports the kinetically controlled formation of Pd(0)n nanoparticles with the simple stabilizer [Bu4N]2HPO4 in an established, balanced formation reaction where the kinetics and mechanism of the nanoparticle-formation reaction are also provided. It is just such studies that are the focus of the present work. Specifically, the present studies reveal that Pd(acac)2, in the presence of 1 equiv of [Bu4N]2HPO4 as stabilizer in propylene carbonate, serves as a preferred precatalyst for the kinetically controlled nucleation following reduction under 40 ± 1 psig initial H2 pressure at 22.0 ± 0.1 °C to yield 7 ± 2 nm palladium(0) nanoparticles. Studies of the balanced stoichiometry of the Pd(0)n nanoparticle-formation reaction shows that 1.0 Pd(acac)2 consumes 1.0 equiv of H2 and produces 1.0 equiv of Pd(0)n while also releasing 2.0 ± 0.2 equiv of acetylacetone. The inexpensive, readily available HPO4(2-) also proved to be as effective a Pd(0)n nanoparticle stabilizer as the more anionic, sterically larger, "Gold Standard" stabilizer P2W15Nb3O62(9-). The kinetics and associated minimal mechanism of formation of the [Bu4N]2HPO4-stabilized Pd(0)n nanoparticles are also provided, arguably the most novel part of the present studies, specifically the four-step mechanism of nucleation (A → B, rate constant k1), autocatalytic surface growth (A + B → 2B, rate constant k2), bimolecular agglomeration (B + B → C, rate constant k3), and secondary autocatalytic surface growth (A + C → 1.5C, rate constant k4), where A is Pd(acac)2, B represents the growing, smaller Pd(0)n nanoparticles, and C represents the larger, most catalytically active Pd(0)n nanoparticles. Additional details on the mechanism and catalytic properties of the resultant Pd(0)n·HPO4(2-) nanoparticles are provided in this work.
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Affiliation(s)
- Saim Özkar
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523 United States
- Department of Chemistry, Middle East Technical University , 06800 Ankara, Turkey
| | - Richard G Finke
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523 United States
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27
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Abstract
In this study, we perform a catalytic decomposition of organic dye over Fe2O3-CeO2-TiO2-γ-Al2O3catalyst in the presence of molecular oxygen and chlorate ions. The results showed that organic dye acts as a sensitizer during this process. The mechanism of the allover process is hypothesized. Several techniques were employed for the characterization of the catalyst, including XRD, SEM, EDAX, and thermal analysis and catalytic activity. The analysis showed that iron is the main active centers, and we have two types of active centers in this process: surface iron and dissolved iron in titanium dioxide. The dissolved iron was found to be the most active center; however, after Fe/Ti = 2.76, a synergism was observed to be occurring between the two active centers.
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28
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Mason JA, Darago LE, Lukens WW, Long JR. Synthesis and O2 Reactivity of a Titanium(III) Metal–Organic Framework. Inorg Chem 2015; 54:10096-104. [DOI: 10.1021/acs.inorgchem.5b02046] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jarad A. Mason
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Lucy E. Darago
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | | | - Jeffrey R. Long
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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29
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Thornburg NE, Thompson AB, Notestein JM. Periodic Trends in Highly Dispersed Groups IV and V Supported Metal Oxide Catalysts for Alkene Epoxidation with H2O2. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01105] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nicholas E. Thornburg
- Department of Chemical and
Biological Engineering, Technological Institute E136, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Anthony B. Thompson
- Department of Chemical and
Biological Engineering, Technological Institute E136, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and
Biological Engineering, Technological Institute E136, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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30
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Bayram E, Lu J, Aydin C, Browning ND, Özkar S, Finney E, Gates BC, Finke RG. Agglomerative Sintering of an Atomically Dispersed Ir1/Zeolite Y Catalyst: Compelling Evidence Against Ostwald Ripening but for Bimolecular and Autocatalytic Agglomeration Catalyst Sintering Steps. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00321] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ercan Bayram
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jing Lu
- Department
of Chemical Engineering and Materials Science, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Ceren Aydin
- Department
of Chemical Engineering and Materials Science, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Nigel D. Browning
- Department
of Chemical Engineering and Materials Science, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
- Fundamental and Computational Sciences, Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, Washington 99352, United States
| | - Saim Özkar
- Department
of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
| | - Eric Finney
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Bruce C. Gates
- Department
of Chemical Engineering and Materials Science, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Richard G. Finke
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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31
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Alfayate A, Márquez-Álvarez C, Grande-Casas M, Sánchez-Sánchez M, Pérez-Pariente J. Ti(III)APO-5 materials as selective catalysts for the allylic oxidation of cyclohexene: Effect of Ti source and Ti content. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.09.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Xu L, Ding J, Yang Y, Wu P. Distinctions of hydroxylamine formation and decomposition in cyclohexanone ammoximation over microporous titanosilicates. J Catal 2014. [DOI: 10.1016/j.jcat.2013.08.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Ivanchikova ID, Lee JS, Maksimchuk NV, Shmakov AN, Chesalov YA, Ayupov AB, Hwang YK, Jun CH, Chang JS, Kholdeeva OA. Highly Selective H2O2-Based Oxidation of Alkylphenols top-Benzoquinones Over MIL-125 Metal-Organic Frameworks. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301098] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Enhanced reaction rate for gas-phase epoxidation of propylene using H2 and O2 by Cs promotion of Au/TS-1. J Catal 2013. [DOI: 10.1016/j.jcat.2013.05.023] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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LI H, LEI Q, ZHANG X, SUO J. Synthesis, characterization, and catalytic performance of bifunctional titanium silicalite-1. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.1016/s1872-2067(12)60589-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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37
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Kumar A, Srinivas D. Hydroxylation of phenol with hydrogen peroxide catalyzed by Ti-SBA-12 and Ti-SBA-16. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2012.11.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Kholdeeva OA. Hydrogen Peroxide Activation over TiIV: What Have We Learned from Studies on Ti-Containing Polyoxometalates? Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201396] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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XU D, JIA L, GUO X. Cu-doped mesoporous VOx-TiO2 in catalytic hydroxylation of benzene to phenol. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.1016/s1872-2067(11)60487-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Chen J, Halin SJA, Pidko EA, Verhoeven MWGMT, Ferrandez DMP, Hensen EJM, Schouten JC, Nijhuis TA. Enhancement of Catalyst Performance in the Direct Propene Epoxidation: A Study into Gold-Titanium Synergy. ChemCatChem 2013. [DOI: 10.1002/cctc.201200572] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Deng X, Zhang S, Wang B, Wang Y, Wu H, Liu Y, He M. Enhanced catalytic activity of titanosilicates controlled by hydrogen-bonding interactions. Chem Commun (Camb) 2013; 49:7504-6. [DOI: 10.1039/c3cc43372b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Fang X, Wang Q, Zheng A, Liu Y, Lin L, Wu H, Deng F, He M, Wu P. Post-synthesis, characterization and catalytic properties of fluorine-planted MWW-type titanosilicate. Phys Chem Chem Phys 2013; 15:4930-8. [DOI: 10.1039/c3cp44700f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ding J, Xu L, Yu Y, Wu H, Huang S, Yang Y, Wu J, Wu P. Clean synthesis of acetaldehyde oxime through ammoximation on titanosilicate catalysts. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00471f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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LI X, SUN M, ROOKE JC, CHEN L, SU BL. Synthesis and applications of hierarchically porous catalysts. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.1016/s1872-2067(11)60507-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Selective oxidation of cyclic olefins over framework Ti-substituted, three-dimensional, mesoporous Ti-SBA-12 and Ti-SBA-16 molecular sieves. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.01.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pirovano C, Guidotti M, Dal Santo V, Psaro R, Kholdeeva O, Ivanchikova I. Use of titanium-containing silica catalysts prepared by rapid and straightforward method in selective oxidations. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.07.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Modak A, Nandi M, Bhaumik A. Titanium containing periodic mesoporous organosilica as an efficient catalyst for the epoxidation of alkenes. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.03.074] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lewis and Brönsted acidic sites in M4+-doped zeolites (M=Ti, Zr, Ge, Sn, Pb) as well as interactions with probe molecules: A DFT study. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2012.07.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kumar A, Srinivas D. Aminolysis of epoxides catalyzed by three-dimensional, mesoporous titanosilicates, Ti-SBA-12 and Ti-SBA-16. J Catal 2012. [DOI: 10.1016/j.jcat.2012.06.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Selective hydrogenation of hydrogen peroxide in the epoxidation effluent of the HPPO process. CATAL COMMUN 2012. [DOI: 10.1016/j.catcom.2012.04.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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