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Amorphous mesostructured zirconia with high (hydro)thermal stability.

ABSTRACT: Here, combining the evaporation-induced self-assembly (EISA) method and the liquid crystal templating pathway, mesostructured amorphous zirconium oxides have been prepared by a soft templating method without addition of any heteroelement to stabilize the mesopore framework. The recovered materials have been characterized by SAXS measurements, nitrogen adsorption-desorption analysis and X-ray diffraction (XRD). The obtained mesostructured zirconia exhibits a high thermal stability. An in situ XRD study performed as a function of temperature shows that the amorphous ZrO₂, obtained after removal of the pore templating agent (pluronic P123), begins to crystallize in air from 420 °C. Amorphous mesostructured ZrO₂ also presents a high hydrothermal stability; these materials are not degraded after 72 hours in boiling water.

SUBMITTER: Lebeau B

PROVIDER: S-EPMC9055362 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Amorphous mesostructured zirconia with high (hydro)thermal stability.

Lebeau Bénédicte B Naboulsi Issam I Michelin Laure L Marichal Claire C Rigolet Séverinne S Carteret Cédric C Brunet Sylvette S Bonne Magali M Blin Jean-Luc JL

RSC advances 20200713 44

Here, combining the evaporation-induced self-assembly (EISA) method and the liquid crystal templating pathway, mesostructured amorphous zirconium oxides have been prepared by a soft templating method without addition of any heteroelement to stabilize the mesopore framework. The recovered materials have been characterized by SAXS measurements, nitrogen adsorption-desorption analysis and X-ray diffraction (XRD). The obtained mesostructured zirconia exhibits a high thermal stability. An <i>in situ< ...[more]

PMID: 35519781

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