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Lignin as a Bio-Sourced Secondary Template for ZSM-5 Zeolite Synthesis. Catalysts 2022. [DOI: 10.3390/catal12040368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The aim of this study was to investigate the effect of the addition of lignin as a sacrificial agent in ZSM-5 zeolite synthesis. Peculiar growths of ZSM-5 crystals leading to various textural properties were observed. Hence, the behavior in acid-catalyzed conversion of methanol into hydrocarbons (MTH) shifted from high selectivity toward olefins (>55%) to the sole formation of dimethyl ether (DME). Lignin acted as a bio-sourced secondary template (BSST), impacting the zeolite crystals’ shape and, thus, their physicochemical properties.
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Zaitceva O, Louis B, Beneteau V, Pale P, Shanmugam S, Evstigneyev E, Vasiliev A. Post-modified FAU zeolites as efficient catalysts for the synthesis of coumarins. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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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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Maia RA, Louis B, Baudron SA. HKUST-1 MOF in reline deep eutectic solvent: synthesis and phase transformation. Dalton Trans 2021; 50:4145-4151. [PMID: 33666622 DOI: 10.1039/d1dt00377a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The fate of HKUST-1 (Cu3(BTC)2, BTC = 1,3,5-benzenetricarboxylate) in the green Deep Eutectic Solvent (DES) reline (choline chloride/urea 1 : 2) was investigated, highlighting that not only reline can be used to make this MOF but also to transform it into another crystalline material. The synthesis of HKUST-1(reline) showing good textural properties and a particular rose morphology was indeed successfully achieved in this solvent. However, upon optimizing the reaction conditions such as concentration and metal/ligand ratio, it was found that another structure Cu2(BTC)Cl also forms. It was unequivocally demonstrated that, upon heating in reline, HKUST-1 converts to the non-porous chloride-incorporating material. Hence, a novel feature of DES in MOF synthesis is uncovered: its role as a structure-directing agent, triggering the transformation between two different MOF structures.
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Affiliation(s)
- Renata A Maia
- CNRS, CMC UMR 7140, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France.
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Abstract
The zeolites are porous solid structures characterized by a particular framework of aluminosilicates, in which the incorporation of the Al+3 ions generates an excess of negative charge compensated by cations (usually alkali or alkali earth) or protons. In the latter case, they are employed as catalysts for a wide variety of reactions, such as dehydration, skeletal isomerization and cracking, while the catalytic activity of basic zeolites has not found, up to now, any industrial or whatever relevant application in chemical processes. In the present review, we firstly intend to give an overview of the fundamental chemical composition, as well as the structural features of the zeolite framework. The purpose of this paper is to analyze their key properties as acid, both Lewis and Brønsted, and basic solid support. Their application as catalysts is discussed by reviewing the already published works in that field, and a final remark of their still unexplored potential as green, mild, and selective catalyst is also reported.
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Pereira MM, Gomes ES, Silva AV, Pinar AB, Willinger MG, Shanmugam S, Chizallet C, Laugel G, Losch P, Louis B. Biomass-mediated ZSM-5 zeolite synthesis: when self-assembly allows to cross the Si/Al lower limit. Chem Sci 2018; 9:6532-6539. [PMID: 30310584 PMCID: PMC6115686 DOI: 10.1039/c8sc01675e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/04/2018] [Indexed: 11/21/2022] Open
Abstract
A family of Al-rich ZSM-5 zeolites with Si/Al = 8 ± 0.5 was prepared according to a biomass-mediated supramolecular approach. A combination of advanced characterisation techniques and periodic density functional theory (DFT) calculations unraveled the purity and stability of un-expected Al-enriched ZSM-5 structures, hence allowing to cross the frontier of Si/Al lower limit. In addition, these Al-rich ZSM-5 zeolites demonstrated high catalytic activity in n-hexane cracking and methanol conversion into hydrocarbons, being in line with the presence of numerous Brønsted acid sites.
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Affiliation(s)
- Marcelo Maciel Pereira
- Universidade Federal do Rio de Janeiro , Centro de Tecnologia , Departamento de Química Inorgânica , Avenida Athos da Silveira Ramos , 149, Ilha do Fundão , 21941-909 , Rio de Janeiro , RJ , Brazil
| | - Elisa Silva Gomes
- Universidade Federal do Rio de Janeiro , Centro de Tecnologia , Departamento de Química Inorgânica , Avenida Athos da Silveira Ramos , 149, Ilha do Fundão , 21941-909 , Rio de Janeiro , RJ , Brazil
| | - Alessandra Vieira Silva
- Universidade Federal do Rio de Janeiro , Centro de Tecnologia , Departamento de Química Inorgânica , Avenida Athos da Silveira Ramos , 149, Ilha do Fundão , 21941-909 , Rio de Janeiro , RJ , Brazil
| | - Ana Belen Pinar
- Laboratory for Catalysis and Sustainable Chemistry , ETH Zürich , Paul Scherrer Institute , CH-5232 Villigen , Switzerland
| | - Marc-Georg Willinger
- Department of Inorganic Chemistry , Fritz Haber Institute of the Max Planck Society , Faradayweg 4-6 , Berlin 14195 , Germany
| | - Sangaraju Shanmugam
- Department of Energy Systems and Engineering , Daegu Gyeongbuk Institute of Science and Technology (DGIST) , 50-1 Sang-Ri , Hyeongpung-Myeon, Dalseong-gun , Daegu , 711-873 , Republic of Korea
| | - Céline Chizallet
- IFP Energies Nouvelles , Ront-point de l'échangeur de Solaize , BP3, 69360 Solaize , France
| | - Guillaume Laugel
- Sorbonne Université , CNRS , Laboratoire de Réactivité de Surface (LRS) , F-75005 Paris , France
| | - Pit Losch
- Université de Strasbourg , CNRS , ICPEES , UMR 7515 , 67000 Strasbourg , France .
| | - Benoît Louis
- Université de Strasbourg , CNRS , ICPEES , UMR 7515 , 67000 Strasbourg , France .
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