1
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Tian M, Huang H, Zhang G, Wang H. Synthesis of Nitronyl Nitroxide Radical-Modified Multi-Walled Carbon Nanotubes and Oxidative Desulfurization in Fuel. Molecules 2024; 29:3896. [PMID: 39202975 PMCID: PMC11357514 DOI: 10.3390/molecules29163896] [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: 07/10/2024] [Revised: 08/04/2024] [Accepted: 08/14/2024] [Indexed: 09/03/2024] Open
Abstract
Novel and highly stable nitronyl nitroxide radical (NIT) derivatives were synthesized and coated on the surface of multi-walled carbon nanotubes (MWCNTs) to improve their desulfurization performance. They were characterized by FTIR, UV-vis, SEM, XRD, Raman spectroscopy and ESR. Thiophene in fuel was desulfurized by molecular O2, and the oxidation activity of these compounds was evaluated. At a normal temperature and pressure, the degradation rates of thiophene by four compounds in 4 h can reach 92.66%, 96.38%, 93.25% and 89.49%, respectively. The MWCNTs/NIT-F have a high special activity for the degradation of thiophene, and their desulfurization activity can be recycled for five times without a significant reduction. The mechanistic studies of MWCNTs/NIT composites show that the ammonium oxide ion is the key active intermediate in catalytic oxidative desulfurization, which provides a new choice for fuel oxidative desulfurization. The results show that NIT significantly improves the photocatalytic performance of MWCNTs.
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Affiliation(s)
- Min Tian
- School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China; (M.T.); (H.H.)
| | - Haokang Huang
- School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China; (M.T.); (H.H.)
| | - Gai Zhang
- School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China; (M.T.); (H.H.)
| | - Haibo Wang
- Department of Chemistry, School of Pharmacy, Air Force Medical University, Xi’an 710032, China
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2
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Kong X, Garg S, Mortazavi M, Ma J, Waite TD. Heterogenous Iron Oxide Assemblages for Use in Catalytic Ozonation: Reactivity, Kinetics, and Reaction Mechanism. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:18636-18646. [PMID: 36648439 DOI: 10.1021/acs.est.2c07319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Heterogeneous catalytic ozonation (HCO) has gained increasing attention as an effective process to remove refractory organic pollutants from industrial effluents. However, widespread application of HCO is still limited due to the typically low efficacy of catalysts used and matrix passivation effects. To this end, we prepared an Al2O3-supported Fe catalyst with high reactivity via a facile urea-based heterogeneous precipitation method. Due to the nonsintering nature of the preparation method, a heterogeneous catalytic layer comprised of γ-FeOOH and α-Fe2O3 is formed on the Al2O3 support (termed NS-Fe-Al2O3). On treatment of a real industrial effluent by HCO, the presence of NS-Fe-Al2O3 increased the removal of organics by ∼100% compared to that achieved with a control catalyst (i.e., α-Fe2O3/Al2O3 or γ-FeOOH/Al2O3) that was prepared by a conventional impregnation and calcination method. Furthermore, our results confirmed that the novel NS-Fe-Al2O3 catalyst demonstrated resistance to the inhibitory effect of high concentration of chloride and sulfate ions usually present in industrial effluent. A mathematical kinetic model was developed that adequately describes the mechanism of HCO process in the presence of NS-Fe-Al2O3. Overall, the results presented here provide valuable guidance for the synthesis of effective and robust catalysts that will facilitate the wider industrial application of HCO.
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Affiliation(s)
- Xiangtong Kong
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW2052, Australia
| | - Shikha Garg
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW2052, Australia
| | - Mahshid Mortazavi
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW2052, Australia
| | - Jinxing Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou510006, P.R. China
| | - T David Waite
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW2052, Australia
- UNSW Centre for Transformational Environmental Technologies (CTET), Yixing, Jiangsu Province214206, P.R. China
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3
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Mureseanu M, Filip M, Bleotu I, Spinu CI, Marin AH, Matei I, Parvulescu V. Cu(II) and Mn(II) Anchored on Functionalized Mesoporous Silica with Schiff Bases: Effects of Supports and Metal-Ligand Interactions on Catalytic Activity. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1884. [PMID: 37368314 DOI: 10.3390/nano13121884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023]
Abstract
New series of Cu(II) and Mn(II) complexes with Schiff base ligands derived from 2-furylmethylketone (Met), 2-furaldehyde (Fur), and 2-hydroxyacetopheneone (Hyd) have been synthesized in situ on SBA-15-NH2, MCM-48-NH2, and MCM-41-NH2 functionalized supports. The hybrid materials were characterized by X-ray diffraction, nitrogen adsorption-desorption, SEM and TEM microscopy, TG analysis, and AAS, FTIR, EPR, and XPS spectroscopies. Catalytic performances were tested in oxidation with the hydrogen peroxide of cyclohexene and of different aromatic and aliphatic alcohols (benzyl alcohol, 2-methylpropan-1-ol, and 1-buten-3-ol). The catalytic activity was correlated with the type of mesoporous silica support, ligand, and metal-ligand interactions. The best catalytic activity of all tested hybrid materials was obtained in the oxidation of cyclohexene on SBA-15-NH2-MetMn as a heterogeneous catalyst. No leaching was evidenced for Cu and Mn complexes, and the Cu catalysts were more stable due to a more covalent interaction of the metallic ions with the immobilized ligands.
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Affiliation(s)
- Mihaela Mureseanu
- Department of Chemistry, Faculty of Sciences, University of Craiova, Calea Bucuresti, 107I, 200478 Craiova, Romania
| | - Mihaela Filip
- "IlieMurgulescu" Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
| | - Irina Bleotu
- Department of Chemistry, Faculty of Sciences, University of Craiova, Calea Bucuresti, 107I, 200478 Craiova, Romania
| | - Cezar Ionut Spinu
- Department of Chemistry, Faculty of Sciences, University of Craiova, Calea Bucuresti, 107I, 200478 Craiova, Romania
| | - Alexandru Horia Marin
- Ken and Mary Alice Lindquist Department of Nuclear Engineering, Penn State University, University Park, State College, PA 16802, USA
- Surface Analysis Laboratory, Institute for Nuclear Research Pitesti, 115400 Mioveni, Romania
| | - Iulia Matei
- "IlieMurgulescu" Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
| | - Viorica Parvulescu
- "IlieMurgulescu" Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
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4
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Shi W, Liu X, Liu Y, Li D, Tong X, Ma J, Wang L. Catalytic ozonation of hard COD in coking wastewater with Fe 2O 3/Al 2O 3-SiC: From catalyst design to industrial application. JOURNAL OF HAZARDOUS MATERIALS 2023; 447:130759. [PMID: 36641843 DOI: 10.1016/j.jhazmat.2023.130759] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 12/24/2022] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Development of robust, reactive, and inexpensive catalyst for pollutants abatement with catalytic ozonation is of great significance. Herein, the effect of a robust and easy-recovery catalyst, Fe2O3/Al2O3-SiC, for the catalytic ozonation of hardly biodegradable COD (hard COD) in coking wastewater had been explored. Al-O-Si bond formed on modified SiC through the substitution of hydrogen in surficial Si-OH groups by Al3+. The Lewis acid sites improved the adsorption of ozone and facilitated the formation of ·OH and O2·-. For coking wastewater treatment, the removal ratio of hard COD and the generation speed of hydroxyl radical (Rct) in the catalytic ozonation process were 71% and 253% higher than those in the ozonation group, respectively. Ozone utilization increased from 0.44 g COD removed/g O3 in the ozonation group to 1.42 g COD removed/g O3 in the Fe2O3/Al2O3-SiC catalytic ozonation group. In a full-scale application, Fe2O3/Al2O3-SiC catalytic ozonation decreased the consumption of O3 to 60 mg L-1 and decreased the operation cost by 50%. These results provided an approachable way for sharing the extraordinary capacity of ozone for contaminants remediation in industrial applications.
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Affiliation(s)
- Wei Shi
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; China Everbright Water Limited, Shenzhen, Guangdong 518000, China
| | - Xiaojing Liu
- China Everbright Water Limited, Shenzhen, Guangdong 518000, China
| | - Yulei Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Dong Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Xili Tong
- State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lu Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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5
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Avan İ, Kani İ, Çalıkuşu L. Bis(dipyrrinato)zinc(II) Complexes: Synthesis and catalytic activity towards alcohol oxidation. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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6
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Kon Y, Nakashima T, Onozawa SY, Sato K, Kobayashi S. Switchable Synthesis of Aldehydes and Carboxylic Acids from Alcohols by Platinum‐Catalysed Hydrogen Peroxide Oxidation Using Flow Reactors. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshihiro Kon
- National Institute of Advanced Industrial Science and Technology (AIST) JAPAN
| | - Takuya Nakashima
- National Institute of Advanced Industrial Science and Technology (AIST) JAPAN
| | - Syun-ya Onozawa
- National Institute of Advanced Industrial Science and Technology (AIST) JAPAN
| | - Kazuhiko Sato
- National Institute of Advanced Industrial Science and Technology JAPAN
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7
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Storm E, Maggott ED, Mashazi P, Nyokong T, Malgas-Enus R, Mapolie SF. Application of gold and palladium nanoparticles supported on polymelamine microspheres in the oxidation of 1-phenylethanol and some other phenyl substituted alcohols. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Tosuwan P, Chen SY, Tateno H, Mochizuki T, Luengnaruemitchai A. An aluminum-grafted SBA-15-catalyzed conversion of glucose to 5-hydroxymethylfurfural. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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9
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Deng Y, Zhou J, Li G, Liu H, Gao X, Yue Y, Li H, Xie F, Liu H. Synthesis of Well-Ordered Mesoporous Aluminosilicates with High Aluminum Contents: The Challenge and the Promise. Inorg Chem 2022; 61:11820-11829. [PMID: 35839458 DOI: 10.1021/acs.inorgchem.2c01571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
SBA-15 has recently emerged as a potential material for the catalytic conversion of large molecules. Usually, SBA-15 has a low content of aluminum due to the conventional acidic synthesis medium. Although a few approaches have been adopted to prepare Al-SBA-15 with a high alumina content, it is still challenging to prepare well-ordered Al-SBA-15 with a high alumina content. Here, we demonstrate a facile synthesis process in neutral mediums for the grafting of Al into the framework of SBA-15. This approach relies mainly on the dissociation of Si-O-Si bonds and the polymerization of Si-O-Si/Al bonds promoted by sodium persulfate (SPS) in neutral mediums. In this way, well-ordered Al-SBA-15 with a high aluminum content and enhanced acidity was obtained. Results of X-ray fluorescence spectroscopy (XRF) showed an n(SiO2)/n(Al2O3) ratio of 13.7, much lower than that of the conventional sample (21.7) obtained in acidic medium. The characterization results indicated the presence of a well-ordered Al-containing mesophase with high hydrothermal stability. Notably, the Al content and the acidity of Al-SBA-15 can be tuned by changing the SPS amount.
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Affiliation(s)
- Yixiong Deng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Jiayu Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Gen Li
- China Petroleum Technology and Development Corporation, Beijing 100027, P. R. China
| | - Honghai Liu
- Petrochemical Research Institute, Petrochina Company Limited, Beijing 100195, P. R. China
| | - Xionghou Gao
- Petrochemical Research Institute, Petrochina Company Limited, Beijing 100195, P. R. China
| | - Yuanyuan Yue
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou 350002, P. R. China
| | - Haiyan Li
- Petrochemical Research Institute, Petrochina Company Limited, Beijing 100195, P. R. China
| | - Fangming Xie
- Petrochemical Research Institute, Petrochina Company Limited, Beijing 100195, P. R. China
| | - Hongtao Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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10
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Insights into mechanism of catalytic ozonation of cinnamyl alcohol over core–shell Fe3O4@SiO2@La2O3 catalyst. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119969] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Mondal U, Yadav GD. Direct synthesis of dimethyl ether from CO 2 hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al 2O 3/Al–Zr(1 : 1)-SBA-15. REACT CHEM ENG 2022. [DOI: 10.1039/d2re00025c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green and sustainable method to valorize CO2 into dimethyl ether on a very active and stable CZA/Al–Zr(1 : 1)-SBA-15 trifunctional catalyst.
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Affiliation(s)
- Ujjal Mondal
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Ganapati D. Yadav
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
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12
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Yu X, Williams CT. Recent Advances in the Applications of Mesoporous Silica in Heterogenous Catalysis. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00001f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous silica is a class of silica material with a large specific surface area, high specific pore volume and meso-sized pores. These properties make mesoporous silica a good choice of...
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13
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Ding S, Ganesh M, Jiao Y, Ou X, Isaacs MA, S'ari M, Torres Lopez A, Fan X, Parlett CMA. Palladium-doped hierarchical ZSM-5 for catalytic selective oxidation of allylic and benzylic alcohols. ROYAL SOCIETY OPEN SCIENCE 2021; 8:211086. [PMID: 34703623 PMCID: PMC8527205 DOI: 10.1098/rsos.211086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Hierarchical zeolites have the potential to provide a breakthrough in transport limitation, which hinders pristine microporous zeolites and thus may broaden their range of applications. We have explored the use of Pd-doped hierarchical ZSM-5 zeolites for aerobic selective oxidation (selox) of cinnamyl alcohol and benzyl alcohol to their corresponding aldehydes. Hierarchical ZSM-5 with differing acidity (H-form and Na-form) were employed and compared with two microporous ZSM-5 equivalents. Characterization of the four catalysts by X-ray diffraction, nitrogen porosimetry, NH3 temperature-programmed desorption, CO chemisorption, high-resolution scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption spectroscopy allowed investigation of their porosity, acidity, as well as Pd active sites. The incorporation of complementary mesoporosity, within the hierarchical zeolites, enhances both active site dispersion and PdO active site generation. Likewise, alcohol conversion was also improved with the presence of secondary mesoporosity, while strong Brønsted acidity, present solely within the H-form systems, negatively impacted overall selectivity through undesirable self-etherification. Therefore, tuning support porosity and acidity alongside active site dispersion is paramount for optimal aldehyde production.
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Affiliation(s)
- Shengzhe Ding
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester, Manchester M13 9PL, UK
| | - Muhammad Ganesh
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester, Manchester M13 9PL, UK
| | - Yilai Jiao
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Liaoning, People's Republic of China
| | - Xiaoxia Ou
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester, Manchester M13 9PL, UK
| | - Mark A. Isaacs
- Department of Chemistry, University College London, London WC1E 6BT, UK
- HarwellXPS, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 0FA, UK
| | - Mark S'ari
- Nanoscience and Nanotechnology Facility, School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
| | - Antonio Torres Lopez
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester, Manchester M13 9PL, UK
- Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 0FA, UK
| | - Xiaolei Fan
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester, Manchester M13 9PL, UK
| | - Christopher M. A. Parlett
- Department of Chemical Engineering and Analytical Science, School of Engineering, University of Manchester, Manchester M13 9PL, UK
- Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 0FA, UK
- University of Manchester at Harwell, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
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14
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Comparative study of size-selected gold clusters (Au38) and gold nanoparticles over porous cerium-based metal–organic frameworks with UiO-66 architecture for aerobic oxidation of cinnamyl alcohol. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04427-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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15
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Mohammadnasabomran S, Márquez-Álvarez C, Pérez-Pariente J, Martínez A. Short-channel mesoporous SBA-15 silica modified by aluminum grafting as a support for CoRu Fischer–Tropsch synthesis catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02418j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Highly ordered short-channel mesoporous silica SBA-15 with large pores (11.2 nm) was synthesized from tetramethyl orthosilicate, using the block copolymer Pluronic PE-10400 as structure-directing agent, and triisopropylbenzene as a swelling agent.
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Affiliation(s)
| | | | | | - Agustín Martínez
- Instituto de Tecnología Química
- Universitat Politècnica de València – Consejo Superior de Investigaciones Científicas (UPV – CSIC)
- 46022 Valencia
- Spain
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16
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Zhang Z, Huang Z, Yuan H. Direct conversion of cellulose to ethyl levulinate catalysed by modified fibrous mesoporous silica nanospheres in a co-solvent system. NEW J CHEM 2021. [DOI: 10.1039/d0nj05433j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A KCC-1/Al–SO3H catalyst with Si/Al = 5 was prepared to directly catalyse the synthesis of ethyl levulinate from cellulose in an ethanol/toluene co-solvent system. A reaction yield of 28.8 mol% was achieved after 6 h at 200 °C.
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Affiliation(s)
- Zhi Zhang
- School of Chemistry and Chemical Engineering
- North Minzu University
- Yinchuan 750021
- China
| | - Zhihang Huang
- School of Chemistry and Chemical Engineering
- North Minzu University
- Yinchuan 750021
- China
| | - Hong Yuan
- School of Chemistry and Chemical Engineering
- North Minzu University
- Yinchuan 750021
- China
- State Key Laboratory of National Ethnic Affairs Commission Chemical Technology
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17
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Investigation of Synergistic Effects between Co and Fe in Co3-xFexO4 Spinel Catalysts for the Liquid-Phase Oxidation of Aromatic Alcohols and Styrene. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111251] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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18
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Shivhare A, Hunns JA, Durndell LJ, Parlett CMA, Isaacs MA, Lee AF, Wilson K. Metal-Acid Synergy: Hydrodeoxygenation of Anisole over Pt/Al-SBA-15. CHEMSUSCHEM 2020; 13:4945-4953. [PMID: 32449298 DOI: 10.1002/cssc.202000764] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Hydrodeoxygenation (HDO) is a promising technology to upgrade fast pyrolysis bio-oils but it requires active and selective catalysts. Here we explore the synergy between the metal and acid sites in the HDO of anisole, a model pyrolysis bio-oil compound, over mono- and bi-functional Pt/(Al)-SBA-15 catalysts. Ring hydrogenation of anisole to methoxycyclohexane occurs over metal sites and is structure sensitive; it is favored over small (4 nm) Pt nanoparticles, which confer a turnover frequency (TOF) of approximately 2000 h-1 and a methoxycyclohexane selectivity of approximately 90 % at 200 °C and 20 bar H2 ; in contrast, the formation of benzene and the desired cyclohexane product appears to be structure insensitive. The introduction of acidity to the SBA-15 support promotes the demethyoxylation of the methoxycyclohexane intermediate, which increases the selectivity to cyclohexane from 15 to 92 % and the cyclohexane productivity by two orders of magnitude (from 15 to 6500 mmol gPt -1 h-1 ). Optimization of the metal-acid synergy confers an 865-fold increase in the cyclohexane production per gram of Pt and a 28-fold reduction in precious metal loading. These findings demonstrate that tuning the metal-acid synergy provides a strategy to direct complex catalytic reaction networks and minimize precious metal use in the production of bio-fuels.
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Affiliation(s)
- Atal Shivhare
- European Bioenergy Research Institute, Aston University, Birmingham, B4 7ET, UK
| | - James A Hunns
- European Bioenergy Research Institute, Aston University, Birmingham, B4 7ET, UK
| | - Lee J Durndell
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Christopher M A Parlett
- Department of Chemical Engineering and Analytical Science, University of Manchester, Manchester, M13 9PL, UK
- University of Manchester at Harwell, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
- Spectroscopy Village, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Mark A Isaacs
- Department of Chemistry, University College London, London, WC1H 0AJ, UK
- HarwellXPS, Research Complex at Harwell, Rutherford Appleton Laboratories, Didcot, OX11 0FA, UK
| | - Adam F Lee
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Karen Wilson
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne, VIC, 3000, Australia
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19
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Waffel D, Alkan B, Fu Q, Chen YT, Schmidt S, Schulz C, Wiggers H, Muhler M, Peng B. Towards Mechanistic Understanding of Liquid-Phase Cinnamyl Alcohol Oxidation with tert-Butyl Hydroperoxide over Noble-Metal-Free LaCo 1-x Fe x O 3 Perovskites. Chempluschem 2020; 84:1155-1163. [PMID: 31943951 DOI: 10.1002/cplu.201900429] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/06/2019] [Indexed: 11/09/2022]
Abstract
Noble-metal-free perovskite oxides are promising and well-known catalysts for high-temperature gas-phase oxidation reactions, but their application in selective oxidation reactions in the liquid phase has rarely been studied. We report the liquid-phase oxidation of cinnamyl alcohol over spray-flame synthesized LaCo1-x Fex O3 perovskite nanoparticles with tert-butyl hydroperoxide (TBHP) as the oxidizing agent under mild reaction conditions. The catalysts were characterized by XRD, BET, EDS and elemental analysis. LaCo0.8 Fe0.2 O3 showed the best catalytic properties indicating a synergistic effect between cobalt and iron. The catalysts were found to be stable against metal leaching as proven by hot filtration, and the observed slight deactivation is presumably due to segregation as determined by EDS. Kinetic studies revealed an apparent activation energy of 63.6 kJ mol-1 . Combining kinetic findings with TBHP decomposition as well as control experiments revealed a complex reaction network.
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Affiliation(s)
- Daniel Waffel
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Baris Alkan
- IVG, Institute for Combustion and Gas Dynamics - Reactive Fluids and CENIDE Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Carl-Benz-Straße 199, 47057, Duisburg, Germany
| | - Qi Fu
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Yen-Ting Chen
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Stefan Schmidt
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Christof Schulz
- IVG, Institute for Combustion and Gas Dynamics - Reactive Fluids and CENIDE Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Carl-Benz-Straße 199, 47057, Duisburg, Germany
| | - Hartmut Wiggers
- IVG, Institute for Combustion and Gas Dynamics - Reactive Fluids and CENIDE Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Carl-Benz-Straße 199, 47057, Duisburg, Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany.,Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470, Mülheim an der Ruhr, Germany
| | - Baoxiang Peng
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany.,Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470, Mülheim an der Ruhr, Germany
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20
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Rajendran C, Satishkumar G, Lang C, Gaigneaux EM. Alumina grafted SBA-15 sustainable bifunctional catalysts for direct cross-coupling of benzylic alcohols to diarylmethanes. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00471e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
AlSBA-15 catalysts possessing Brønsted acid and Lewis acid–base bifunctionalities catalyze the direct arylation of benzyl alcohols to diarylmethanes with an 85% product yield through C–O bond activation.
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Affiliation(s)
- Chandran Rajendran
- Advanced Materials and Catalysis Lab
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore-632014
| | - Govindaswamy Satishkumar
- Advanced Materials and Catalysis Lab
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore-632014
| | - Charlotte Lang
- Institute of Condensed Matter and Nanosciences
- UCLouvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Eric M. Gaigneaux
- Institute of Condensed Matter and Nanosciences
- UCLouvain
- 1348 Louvain-la-Neuve
- Belgium
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21
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Negahdar L, Parlett CMA, Isaacs MA, Beale AM, Wilson K, Lee AF. Shining light on the solid–liquid interface: in situ/ operando monitoring of surface catalysis. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00555j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Many industrially important chemical transformations occur at the interface between a solid catalyst and liquid reactants. In situ and operando spectroscopies offer unique insight into the reactivity of such catalytically active solid–liquid interfaces.
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Affiliation(s)
| | - Christopher M. A. Parlett
- Department of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
- Diamond Light Source
| | | | | | - Karen Wilson
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- RMIT University
- Melbourne
- Australia
| | - Adam F. Lee
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- RMIT University
- Melbourne
- Australia
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22
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Li X, Feng J, Sun J, Wang Z, Zhao W. Solvent-Free Catalytic Oxidation of Benzyl Alcohol over Au-Pd Bimetal Deposited on TiO 2: Comparison of Rutile, Brookite, and Anatase. NANOSCALE RESEARCH LETTERS 2019; 14:394. [PMID: 31883026 PMCID: PMC6934638 DOI: 10.1186/s11671-019-3211-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
TiO2 (P25)-supported Au-Pd bimetal nanoparticles displayed excellent performance in the solvent-free benzyl alcohol catalytic oxidation. However, little research attention has been paid to investigate the effects of TiO2 form on the catalytic activity of Au-Pd/TiO2. In the present research, rutile, brookite, and anatase TiO2 were successfully synthesized and subsequently applied as the carrier to load Au-Pd nanoparticles by the deposition-precipitation method. The experimental results indicated that the benzyl alcohol conversion employing the rutile TiO2-supported Au-Pd catalyst is higher than the conversion of anatase and brookite TiO2-loaded Au-Pd catalysts. However, the Au-Pd/TiO2-rutile displayed the lowest and highest selectivity toward benzaldehyde and toluene, respectively. ICP-AES, XRD, XPS, and TEM were conducted to characterize these catalysts. The corresponding experimental results revealed that the excellent performance of Au-Pd/TiO2-rutile catalyst was attributed to both the smaller Au-Pd nanoparticle size distribution and the higher concentrations of Oα and Pd2+ species on the catalyst surface. In the recycle experiments, the Au-Pd/TiO2-rutile catalyst displayed lower reaction stability compared with the Au-Pd/TiO2-anatase and Au-Pd/TiO2-brookite, which might be due to the coverage of larger amount of aldehyde products on the surface.
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Affiliation(s)
- Xiaoliang Li
- State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China.
| | - Jiangjiang Feng
- State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China
| | - Jia Sun
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK
| | - Zhe Wang
- State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China
| | - Wei Zhao
- State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China.
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23
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The Effect of Carbon Nanofibers Surface Properties in Hydrogenation and Dehydrogenation Reactions. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9235061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this study, carbon nanofiber-supported Pd nanoparticles were used in the hydrogenation of cinnamaldehyde and in the dehydrogenation of cinnamyl alcohol. The different graphitisation of the surface of the nanofibers and the amount of oxygen functionalisation significantly affected both activity and selectivity to the various reaction products. In particular, a decrease in nanoparticle dimensions and oxygen content resulted in an increase in overall activity for both of the studied reactions. Moreover, the selectivity to hydrocinnamaldehyde enhanced with increasing surface oxygen content in the cinnamaldehyde hydrogenation, while the selectivity to cinnamaldehyde was higher with low-functionalised nanofibers in the cinnamyl alcohol dehydrogenation. Finally, the most active catalyst proved also to be stable in consecutive runs.
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24
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Oregui-Bengoechea M, Agirre I, Iriondo A, Lopez-Urionabarrenechea A, Requies JM, Agirrezabal-Telleria I, Bizkarra K, Barrio VL, Cambra JF. Heterogeneous Catalyzed Thermochemical Conversion of Lignin Model Compounds: An Overview. Top Curr Chem (Cham) 2019; 377:36. [PMID: 31728773 DOI: 10.1007/s41061-019-0260-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 10/18/2019] [Indexed: 02/08/2023]
Abstract
Thermochemical lignin conversion processes can be described as complex reaction networks involving not only de-polymerization and re-polymerization reactions, but also chemical transformations of the depolymerized mono-, di-, and oligomeric compounds. They typically result in a product mixture consisting of a gaseous, liquid (i.e., mono-, di-, and oligomeric products), and solid phase. Consequently, researchers have developed a common strategy to simplify this issue by replacing lignin with simpler, but still representative, lignin model compounds. This strategy is typically applied to the elucidation of reaction mechanisms and the exploration of novel lignin conversion approaches. In this review, we present a general overview of the latest advances in the principal thermochemical processes applied for the conversion of lignin model compounds using heterogeneous catalysts. This review focuses on the most representative lignin conversion methods, i.e., reductive, oxidative, pyrolytic, and hydrolytic processes. An additional subchapter on the reforming of pyrolysis oil model compounds has also been included. Special attention will be given to those research papers using "green" reactants (i.e., H2 or renewable hydrogen donor molecules in reductive processes or air/O2 in oxidative processes) and solvents, although less environmentally friendly chemicals will be also considered. Moreover, the scope of the review is limited to those most representative lignin model compounds and to those reaction products that are typically targeted in lignin valorization.
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Affiliation(s)
- Mikel Oregui-Bengoechea
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain.
| | - Ion Agirre
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - Aitziber Iriondo
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - Alexander Lopez-Urionabarrenechea
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - Jesus M Requies
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - Iker Agirrezabal-Telleria
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - Kepa Bizkarra
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - V Laura Barrio
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - Jose F Cambra
- Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country EHU/UPV, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
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25
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Thirumoorthy K, Satishkumar G. Enhanced Stability of Abundant Amorphous Iron (III) oxide Grafted AlSBA‐15 as Highly Efficient Heterogeneous Fenton Catalyst for the Destruction of Phenol. ChemistrySelect 2019. [DOI: 10.1002/slct.201901510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kulandaivel Thirumoorthy
- Advanced Materials and Catalysis LabDepartment of ChemistrySchool of Advanced SciencesVellore Institute of Technology Vellore- 632014, Tamilnadu India
| | - Govindaswamy Satishkumar
- Advanced Materials and Catalysis LabDepartment of ChemistrySchool of Advanced SciencesVellore Institute of Technology Vellore- 632014, Tamilnadu India
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26
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Zhu Q, Duan H, Lin B, Zhu Y, Hu Y, Zhou Y. Higher Acetone Conversion Obtained Over a TiO2–Pd Bifunctional Catalyst for Liquid-Phase Synthesis of Methyl Isobutyl Ketone: The Role of Al2O3 Support. Catal Letters 2019. [DOI: 10.1007/s10562-019-02861-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Rajendran C, Thirumoorthy K, Satishkumar G, Landau MV. Alumina as Solid-State Ligand in Enhancing the Redox Catalytic Property of Iron Oxide Grafted AlSBA-15 towards Arylation of Arene. ChemCatChem 2018. [DOI: 10.1002/cctc.201800855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chandran Rajendran
- Advanced Materials and Catalysis Lab Department of Chemistry School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632 014 Tamil Nadu India
| | - Kulandaivellu Thirumoorthy
- Advanced Materials and Catalysis Lab Department of Chemistry School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632 014 Tamil Nadu India
| | - Govindaswamy Satishkumar
- Advanced Materials and Catalysis Lab Department of Chemistry School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632 014 Tamil Nadu India
| | - Miron V. Landau
- Blechner Center for Industrial Catalysis and Process Development Department of Chemical Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
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28
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Highly Catalytic Activity of Ba/γ-Ti–Al2O3 Catalyst for Aldol Condensation of Methyl Acetate with Formaldehyde. Catal Letters 2018. [DOI: 10.1007/s10562-018-2535-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Du YP, Héroguel F, Luterbacher JS. Slowing the Kinetics of Alumina Sol-Gel Chemistry for Controlled Catalyst Overcoating and Improved Catalyst Stability and Selectivity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801733. [PMID: 30047219 DOI: 10.1002/smll.201801733] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/21/2018] [Indexed: 06/08/2023]
Abstract
Catalyst overcoating is an emerging approach to engineer surface functionalities on supported metal catalyst and improve catalyst selectivity and durability. Alumina deposition on high surface area material by sol-gel chemistry is traditionally difficult to control due to the fast hydrolysis kinetics of aluminum-alkoxide precursors. Here, sol-gel chemistry methods are adapted to slow down these kinetics and deposit nanometer-scale alumina overcoats. The alumina overcoats are comparable in conformality and thickness control to overcoats prepared by atomic layer deposition even on high surface area substrates. The strategy relies on regulating the hydrolysis/condensation kinetics of Al(s BuO)3 by either adding a chelating agent or using nonhydrolytic sol-gel chemistry. These two approaches produce overcoats with similar chemical properties but distinct physical textures. With chelation chemistry, a mild method compatible with supported base metal catalysts, a conformal yet porous overcoat leads to a highly sintering-resistant Cu catalyst for liquid-phase furfural hydrogenation. With the nonhydrolytic sol-gel route, a denser Al2 O3 overcoat can be deposited to create a high density of Lewis acid-metal interface sites over Pt on mesoporous silica. The resulting material has a substantially increased hydrodeoxygenation activity for the conversion of lignin-derived 4-propylguaiacol into propylcyclohexane with up to 87% selectivity.
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Affiliation(s)
- Yuan-Peng Du
- Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Florent Héroguel
- Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Jeremy S Luterbacher
- Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
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30
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Isaacs MA, Barbero B, Durndell LJ, Hilton AC, Olivi L, Parlett CMA, Wilson K, Lee AF. Tunable Silver-Functionalized Porous Frameworks for Antibacterial Applications. Antibiotics (Basel) 2018; 7:antibiotics7030055. [PMID: 29970796 PMCID: PMC6165165 DOI: 10.3390/antibiotics7030055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 06/28/2018] [Accepted: 07/02/2018] [Indexed: 11/16/2022] Open
Abstract
Healthcare-associated infections and the rise of drug-resistant bacteria pose significant challenges to existing antibiotic therapies. Silver nanocomposites are a promising solution to the current crisis, however their therapeutic application requires improved understanding of underpinning structure-function relationships. A family of chemically and structurally modified mesoporous SBA-15 silicas were synthesized as porous host matrices to tune the physicochemical properties of silver nanoparticles. Physicochemical characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption near-edge spectroscopy (XANES) and porosimetry demonstrate that functionalization by a titania monolayer and the incorporation of macroporosity both increase silver nanoparticle dispersion throughout the silica matrix, thereby promoting Ag2CO3 formation and the release of ionic silver in simulated tissue fluid. The Ag2CO3 concentration within functionalized porous architectures is a strong predictor for antibacterial efficacy against a broad spectrum of pathogens, including C. difficile and methicillin-resistant Staphylococcus aureus (MRSA).
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Affiliation(s)
- Mark A Isaacs
- Department of Chemistry, University College London, London WC1H 0AJ, UK.
| | - Brunella Barbero
- European Bioenergy Research Institute, Aston University, Birmingham B4 7ET, UK.
| | - Lee J Durndell
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrect University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
| | - Anthony C Hilton
- Life and Health Sciences, Aston University, Birmingham B4 7ET, UK.
| | - Luca Olivi
- Sincrotrone Trieste, 34149 Basovizza, Italy.
| | | | - Karen Wilson
- School of Science, RMIT University, Melbourne, VIC 3001, Australia.
| | - Adam F Lee
- School of Science, RMIT University, Melbourne, VIC 3001, Australia.
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31
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SBA-15-supported Pd catalysts: The effect of pretreatment conditions on particle size and its application to benzyl alcohol oxidation. J Catal 2017. [DOI: 10.1016/j.jcat.2017.01.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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33
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Brazier JB, Hellgardt K, Hii KK(M. Catalysis in flow: O2 effect on the catalytic activity of Ru(OH)x/γ-Al2O3 during the aerobic oxidation of an alcohol. REACT CHEM ENG 2017. [DOI: 10.1039/c6re00208k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Different roles of O2 in the Ru-catalysed aerobic oxidation of alcohols have been delineated.
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Affiliation(s)
- John B. Brazier
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
| | - Klaus Hellgardt
- Department of Chemical Engineering
- Imperial College London
- London SW7 2AZ
- UK
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34
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Gao B, Zhang D, Li Y. Catalytic Activity and Mechanism of Co‐Catalysts Used in Combinational Catalysts for Aerobic Oxidation. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Baojiao Gao
- Department of Chemical Engineering North University of China 030051 Taiyuan People's Republic of China
| | - Dandan Zhang
- Department of Chemical Engineering North University of China 030051 Taiyuan People's Republic of China
| | - Yanbin Li
- Department of Chemical Engineering North University of China 030051 Taiyuan People's Republic of China
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35
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Hunns JA, Arroyo M, Lee AF, Escola JM, Serrano D, Wilson K. Hierarchical mesoporous Pd/ZSM-5 for the selective catalytic hydrodeoxygenation of m-cresol to methylcyclohexane. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02072g] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesopore incorporation into ZSM-5 enhances the dispersion of Pd nanoparticles significantly accelerating m-cresol conversion relative to a conventional microporous ZSM-5, and dramatically increasing selectivity towards the desired methylcyclohexane deoxygenated product.
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Affiliation(s)
- James A. Hunns
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET
- UK
| | - Marta Arroyo
- Chemical and Environmental Engineering Group
- Rey Juan Carlos University
- Móstoles
- Spain
| | - Adam F. Lee
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET
- UK
| | - José M. Escola
- Chemical and Environmental Engineering Group
- Rey Juan Carlos University
- Móstoles
- Spain
| | - David Serrano
- Chemical and Environmental Engineering Group
- Rey Juan Carlos University
- Móstoles
- Spain
- IMDEA Energy Institute
| | - Karen Wilson
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET
- UK
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36
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Wu G, Brett GL, Cao E, Constantinou A, Ellis P, Kuhn S, Hutchings GJ, Bethell D, Gavriilidis A. Oxidation of cinnamyl alcohol using bimetallic Au–Pd/TiO2 catalysts: a deactivation study in a continuous flow packed bed microreactor. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00232c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Deactivation of Au–Pd/TiO2 catalyst during oxidation in flow is attributed to Pd leaching and a complex effect of oxygen.
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Affiliation(s)
- Gaowei Wu
- Department of Chemical Engineering
- University College London
- London WC1E 7JE
- UK
| | | | - Enhong Cao
- Department of Chemical Engineering
- University College London
- London WC1E 7JE
- UK
| | | | - Peter Ellis
- Johnson Matthey Technology Centre
- Reading RG4 9NH
- UK
| | - Simon Kuhn
- Department of Chemical Engineering
- KU Leuven
- 3001 Leuven
- Belgium
| | | | - Donald Bethell
- Department of Chemistry
- University of Liverpool
- Liverpool L69 7ZD
- UK
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37
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Bing J, Hu C, Nie Y, Yang M, Qu J. Mechanism of catalytic ozonation in Fe ₂O₃/Al ₂O₃@SBA-15 aqueous suspension for destruction of ibuprofen. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:1690-7. [PMID: 25564945 DOI: 10.1021/es503729h] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Fe2O3 and/or Al2O3 were supported on mesoporous SBA-15 by wet impregnation and calcinations with AlCl3 and FeCl3 as the metal precursor and were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectra (FTIR) of adsorbed pyridine. Fe2O3/Al2O3@SBA-15 was found to be highly effective for the mineralization of ibuprofen aqueous solution with ozone. The characterization studies showed that Al-O-Si was formed by the substitution of Al(3+) for the hydrogen of surface Si-OH groups, not only resulting in high dispersion of Al2O3 and Fe2O3 on SBA-15, but also inducing the greatest amount of surface Lewis acid sites. By studies of in situ attenuated total reflection FTIR (ATR-FTIR), in situ Raman, and electron spin resonance (ESR) spectra, the chemisorbed ozone was decomposed into surface atomic oxygen species at the Lewis acid sites of Al(3+) while it was converted into surface adsorbed (•)OHads and O2(•-) radicals at the Lewis acid sites of Fe(3+). The combination of both Lewis acid sites of iron and aluminum onto Fe2O3/Al2O3@SBA-15 enhanced the formation of (•)OHads and O2(•-) radicals, leading to highest reactivity. Mechanisms of catalytic ozonation were proposed for the tested catalysts on the basis of all the experimental information.
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Affiliation(s)
- Jishuai Bing
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
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38
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Durndell LJ, Lee AF, Bailie DS, Muldoon MJ. Selective Palladium-Catalysed Aerobic Oxidation of Alcohols. TRANSITION METAL CATALYSIS IN AEROBIC ALCOHOL OXIDATION 2014. [DOI: 10.1039/9781782621652-00092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Palladium has a significant track record as a catalyst for a range of oxidation reactions and it has been explored for the selective oxidation of alcohols for many years. This chapter focuses on the two main types of aerobic Pd catalysts: heterogeneous and ligand-modulated systems. In the case of heterogeneous systems, the mechanistic understanding of these systems and the use of in situ and operando techniques to obtain this knowledge are discussed. The current state-of-the-art is also summarized in terms of catalytic performance and substrate scope for heterogeneous Pd-based catalysts. In terms of ligand-modulated systems, leading examples of molecular Pd(ii) catalysts which undergo direct O2 coupled turnover are highlighted. The catalyst performance for such catalysts is exemplified and mechanistic understanding for these molecular systems is discussed.
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Affiliation(s)
- Lee J. Durndell
- European Bioenergy Research Institute, Aston University Aston Triangle Birmingham B4 7ET UK
| | - Adam F. Lee
- European Bioenergy Research Institute, Aston University Aston Triangle Birmingham B4 7ET UK
| | - David S. Bailie
- School of Chemistry and Chemical Engineering, Queen's University Belfast David Keir Building, Stranmillis Road Belfast BT9 5AG UK
| | - Mark J. Muldoon
- School of Chemistry and Chemical Engineering, Queen's University Belfast David Keir Building, Stranmillis Road Belfast BT9 5AG UK
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Opanasenko M, Štěpnička P, Čejka J. Heterogeneous Pd catalysts supported on silica matrices. RSC Adv 2014. [DOI: 10.1039/c4ra11963k] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Features, advantages and limitations associated with palladium catalysts deposited over various siliceous supports in different types of practically useful organic transformations are reviewed.
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Affiliation(s)
- Maksym Opanasenko
- J. Heyrovský Institute of Physical Chemistry
- Academy Sciences of the Czech Republic
- 182 23 Prague 8, Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2, Czech Republic
| | - Jiří Čejka
- J. Heyrovský Institute of Physical Chemistry
- Academy Sciences of the Czech Republic
- 182 23 Prague 8, Czech Republic
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