Abstract 1D nanostructures of Lanthanum Strontium Manganite (LSM) are tested as thermochemical catalyst for CO 2 splitting. The manganite precursors were incorporated into a ceramic silicon oxycarbide (SiOC) matrix at two different stages during its synthesis to form the nanocomposites. As a result, the LSM nanostructures decorate the large-size pores of the SiOC matrix in form of 1D nanofibers and nanowires. At the same time, the formation of the SiOC units decreases because of the incorporation of these LSM. Moreover, the synthetic strategy strongly affects the surface parameter related to apolar interactions. It turns out that the surface fractal constant of the nanocomposite determines the reactivity of the LSM materials towards CO 2 . This reactivity has been verified by collecting the spectra of the gases involved in the thermochemical reactions and determining the relative CO 2 concentration as a function of the temperature.

中文翻译：

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一维纳米结构修饰的 Sr 1-x La x MnO 3 /SiOC 纳米复合材料的合成与表征用于高温 CO 2 裂解

摘要 测试了锰锶镧 (LSM) 的一维纳米结构作为 CO 2 裂解的热化学催化剂。锰酸盐前驱体在合成过程中的两个不同阶段被掺入陶瓷碳氧化硅 (SiOC) 基质中，以形成纳米复合材料。结果，LSM纳米结构以一维纳米纤维和纳米线的形式装饰了SiOC基质的大尺寸孔。同时，由于这些 LSM 的加入，SiOC 单元的形成减少。此外，合成策略强烈影响与非极性相互作用相关的表面参数。结果表明，纳米复合材料的表面分形常数决定了 LSM 材料对 CO 2 的反应性。