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Instruments / Technical Area	Publication Details	Published	Actions
I11-High Resolution Powder Diffraction I20-EDE-Energy Dispersive EXAFS (EDE)	Control of zeolite microenvironment for propene synthesis from methanol Longfei Lin , Mengtian Fan , Alena M. Sheveleva , Xue Han , Zhimou Tang , Joseph H. Carter , Ivan Da Silva , Christopher Parlett , Floriana Tuna , Eric J. L. Mcinnes , German Sastre , Svemir Rudic , Hamish Cavaye , Stewart F. Parker , Yongqiang Cheng , Luke L. Daemen , Anibal J. Ramirez-Cuesta , Martin P. Attfield , Yueming Liu , Chiu C. Tang , Buxing Han , Sihai Yang Nature Communications 12 DOI: 10.1038/s41467-021-21062-1 Diamond Proposal Number(s): [2359] Open Access Show Abstract ▼ Abstract: Optimising the balance between propene selectivity, propene/ethene ratio and catalytic stability and unravelling the explicit mechanism on formation of the first carbon–carbon bond are challenging goals of great importance in state-of-the-art methanol-to-olefin (MTO) research. We report a strategy to finely control the nature of active sites within the pores of commercial MFI-zeolites by incorporating tantalum(V) and aluminium(III) centres into the framework. The resultant TaAlS-1 zeolite exhibits simultaneously remarkable propene selectivity (51%), propene/ethene ratio (8.3) and catalytic stability (>50 h) at full methanol conversion. In situ synchrotron X-ray powder diffraction, X-ray absorption spectroscopy and inelastic neutron scattering coupled with DFT calculations reveal that the first carbon–carbon bond is formed between an activated methanol molecule and a trimethyloxonium intermediate. The unprecedented cooperativity between tantalum(V) and Brønsted acid sites creates an optimal microenvironment for efficient conversion of methanol and thus greatly promotes the application of zeolites in the sustainable manufacturing of light olefins.	Feb 2021
I15-Extreme Conditions	Synthesis of a novel zeolite through a pressure-induced reconstructive phase transition process Jose Luis Jorda Moret , Fernando Rey , German Sastre , Susana Valencia , Miguel Palomino , Avelino Corma , Alfredo Segura , Daniel Errandonea , Raul Lacomba Perales , Francisco Javier Manjon Herrera , Oscar Gomis , Annette Kleppe , Andrew Jephcoat , Monica Amboage , J. Alberto Rodríguez-Velamazán Angewandte Chemie International Edition 52 (40), 10458 - 10462 DOI: 10.1002/anie.201305230 Show Abstract ▼ Abstract: The first pressure-induced solid-phase synthesis of a zeolite has been found through compression of a common zeolite, ITQ-29 (see scheme, Si yellow, O red). The new microporous structure, ITQ-50, has a unique structure and improved performance for propene/propane separation with respect the parent material ITQ-29.	Sep 2013

Instruments / Technical Area

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I11-High Resolution Powder Diffraction
I20-EDE-Energy Dispersive EXAFS (EDE)

Control of zeolite microenvironment for propene synthesis from methanol