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Kashparova VP, Chernysheva DV, Klushin VA, Andreeva VE, Kravchenko OA, Smirnova NV. Furan monomers and polymers from renewable plant biomass. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5018] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Velaga B, Doley R, Peela NR. Rapid synthesis of hierarchical ZSM-5 zeolites for the reactions involving larger reactant molecules. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Characterization of Sulfated SnO2-ZrO2 Catalysts and Their Catalytic Performance on the Tert-Butylation of Phenol. Catalysts 2020. [DOI: 10.3390/catal10070726] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Understanding the catalytic behavior of sulfated metal oxides has been the topic of several research studies in the past few decades. Their apparent super-acidic behavior has been correlated with the molecular structure of the surface sulfate species. Herein, we couple FTIR and Raman spectroscopies to study the molecular structural evolution of surface sulfate species on mixed metal hydroxides as well as calcined oxides. We show that on the surface of hydroxides, monodentate and possibly bidentate species are dominant, while for SnO2-rich samples, clusters of polymeric sulfate species may also be present. After calcination, sulfate species bind strongly on the surface of mixed oxides, and different configurations can be seen with a range of S=O functionalities of varying strength. Through comparison of the catalytic performance of all sulfate oxides in the tert-butylation of phenol, it was found that SnO2-rich samples show high TBA conversion, with monoalkylated phenols as the primary product.
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Colón-Ortiz J, Ramesh P, Tsilomelekis G, Neimark AV. Permeation dynamics of dimethyl methylphosphonate through polyelectrolyte composite membranes by in-situ Raman spectroscopy. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117462] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Rodriguez Quiroz N, Norton AM, Nguyen H, Vasileiadou E, Vlachos DG. Homogeneous Metal Salt Solutions for Biomass Upgrading and Other Select Organic Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01853] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Natalia Rodriguez Quiroz
- Catalysis Center for Energy Innovation and Department of Chemical and Biomolecular Engineering, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Angela M. Norton
- Catalysis Center for Energy Innovation and Department of Chemical and Biomolecular Engineering, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Hannah Nguyen
- Catalysis Center for Energy Innovation and Department of Chemical and Biomolecular Engineering, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Efterpi Vasileiadou
- Catalysis Center for Energy Innovation and Department of Chemical and Biomolecular Engineering, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Dionisios G. Vlachos
- Catalysis Center for Energy Innovation and Department of Chemical and Biomolecular Engineering, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
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