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Covalently tethering disulfonic acid moieties onto polyoxometalate boosts acid strength and catalytic performance for hydroxyalkylation/alkylation reaction. Sci China Chem 2022. [DOI: 10.1007/s11426-021-1181-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mal DD, Pradhan D. Recent advances in non-noble metal-based oxide materials as heterogeneous catalysts for C–H activation. Dalton Trans 2022; 51:17527-17542. [DOI: 10.1039/d2dt02613a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This perspective article summarizes the recent developments of non-noble metal-based oxides, as a new class of catalysts for C−H bond activation, focusing on their essential surface properties.
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Affiliation(s)
- Diptangshu Datta Mal
- Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, W. B., India
| | - Debabrata Pradhan
- Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, W. B., India
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Molybdenum oxide modified montmorillonite K10 clay as novel solid acid for flow synthesis of ionone isomers. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Rathnayake D, Perera I, Shirazi-Amin A, Kerns P, Dissanayake S, Suib SL. Mesoporous Crystalline Niobium Oxide with a High Surface Area: A Solid Acid Catalyst for Alkyne Hydration. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47389-47396. [PMID: 32962347 DOI: 10.1021/acsami.0c10757] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A mesoporous crystalline niobium oxide with tunable pore sizes was synthesized via the sol-gel-based inverse micelle method. The material shows a surface area of 127 m2/g, which is the highest surface area reported so far for crystalline niobium oxide synthesized by soft template methods. The material also has a monomodal pore size distribution with an average pore diameter of 5.6 nm. A comprehensive characterization of niobium oxide was performed using powder X-ray diffraction, Brunauer-Emmett-Teller, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, UV-vis, and X-ray photoelectron spectroscopy. The material acts as an environmentally friendly, solid acid catalyst toward hydration of alkynes under with excellent catalytic activity (99% conversion, 99% selectivity, and 4.39 h-1 TOF). Brønsted acid sites present in the catalyst were found to be responsible for the high catalytic activity. The catalyst was reusable up to five cycles without a significant loss of the activity.
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Affiliation(s)
- Dinithi Rathnayake
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, Connecticut 06269-3060, United States
| | - Inosh Perera
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, Connecticut 06269-3060, United States
| | - Alireza Shirazi-Amin
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, Connecticut 06269-3060, United States
| | - Peter Kerns
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, Connecticut 06269-3060, United States
| | - Shanka Dissanayake
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, Connecticut 06269-3060, United States
| | - Steven L Suib
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, Connecticut 06269-3060, United States
- Institute of Material Science, University of Connecticut, 97 North Eagleville Road, Unit 3136, Storrs, Connecticut 06269, United States
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