Synthesis of highly thermally stable lanthanum-doped ordered mesoporous alumina
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2020, Journal of Alloys and CompoundsCitation Excerpt :Meanwhile, the thermal stability of fine or nano-transition alumina is more difficult to maintain compared with that of coarse transition alumina. Hence, improving the thermal stability of transition alumina is always required in the catalytic field [7]. Doping rare earth elements (REEs) into alumina precursor (such as amorphous aluminum hydroxide, boehmite sol, gibbsite, pseudo-boehmite, boehmite and activated alumina) can improve the thermal stability of transition alumina [3,8].
Synthesis and application of highly dispersed ordered mesoporous silicon-doped Pd-alumina catalyst with high thermal stability
2016, Chemical Engineering JournalCitation Excerpt :In Fig. 3B, there is no discernable diffraction peak was observed in the wide-angle XRD patterns of Si-OMA-20 calcined at 800 °C, indicating that the formation temperature of γ-Al2O3 for Si-OMA-20 is higher than 800 °C. When calcined at 1000 °C, the sample displays three peaks at 37.1°, 45.7° and 67.1°, which suggests that the crystallization of γ-Al2O3 is occurred at this temperature [29]. However, the intensity of its diffraction peak is low, which presents low crystalline degree of γ-Al2O3 after calcined at 1000 °C [30].
Efficient hydrogen production from ethanol steam reforming over La-modified ordered mesoporous Ni-based catalysts
2016, Applied Catalysis B: EnvironmentalRh<inf>2</inf>O<inf>3</inf>/mesoporous MO<inf>x</inf>-Al<inf>2</inf>O<inf>3</inf> (M = Mn, Fe, Co, Ni, Cu, Ba) catalysts: Synthesis, characterization, and catalytic applications
2016, Cuihua Xuebao/Chinese Journal of CatalysisCitation Excerpt :In particular, a simple solvent evaporation-induced self-assembly (EISA) strategy has been developed for the synthesis of ordered mesoporous Al2O3 [18]. A similar method was later used for the synthesis of mesoporous MgO-Al2O3 [19,20], CaO-Al2O3 [19,21], TiO2-Al2O3 [19,22,23], CrOx-Al2O3 [19,24], NiO-Al2O3 [25], ZrO2-Al2O3 [26,27], LaOx-Al2O3 [28], and CeO2-Al2O3 [29]. The development of mesoporous MOx-Al2O3 has provided new opportunities for catalysis.
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