![]() Lille, CNRS, INRA, Centrale Lille, ENSCL, Univ. ![]() Artois, UMR 8181-UCCS-Unité de Catalyse et de Chimie du Solide, F-59000 Lille, France Lille, CNRS, ENSCL, Centrale Lille, Univ. 作者关键词 : Hierarchical ε-MnO2, Perovskite acid treatment, Pseudomorphic process ,Heterogeneous catalysis, Formaldehyde oxidationĭepartment of Environmental Science and Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan University Lille, CNRS UMR 8181, UCCS-Unit de Catalyse et de Chimie du Solide, 59650 Villeneuve d'Ascq, France. In the light of the experimental results, such performances can be related to the formation of a meso/macro-porous structure conferring high surface area and good accessibility Superior catalytic properties of ε-MnO2 were observed toward HCHO oxidation as well as a good catalytic stability with respect to other macro-mesoporous counterparts. Music relax by Guillaume Rochard published on new by Qasim Alam published on Mix by k I N G published on. In our case, this soft process allowed us to obtain the ε-MnO2 phase with hierarchical porosity without any template. ![]() Specifically, extending the acid etching duration promotes the surface area and pore volume of the materials while developing interconnected macro-mesoporous networks. This transformation proceeds through a soft-chemical process involving the dissolution of trivalent lanthanum and manganese from the perovskite structure and the dismutation of Mn3+ cations into MnO2 and Mn2+ species.Strength and oxidizing properties of the acid used as modifying agent strongly impact textural and redox surface properties of the resulting materials. The LaMnO3 transformation was fully investigated using ICP, XRD, N2 physisorption, TPR, TPD, SEM, TEM/EDS and XPS. 摘要 : A simple template-free method, based on a mineral acid etching process using manganite perovskite (LaMnO3) as precursor, was successfully developed to obtain a series of 3D meso/macro-porous materials. A New Etching Environment (FeF3 /HCl) for the Synthesis of Two-Dimensional Titanium Carbide MXenes: A Route towards. 作者 : Yin Xu, Jérémy Dhainaut, Guillaume Rochard, Jean-Philippe Dacquin ,Anne-Sophie Mamede, Jean-Marc Giraudon, Jean-François Lamonier, Hui Zhang, Sébastien Roye French edition by Claude toussaint Guillaume Benot Rochard Paperback. Université du Littoral Côte dOpale (ULCO) Show all 6 authors Hide. 标题 : Hierarchical porous ε-MnO2 from perovskite precursor: Application to the formaldehyde total oxidation Université du Littoral Côte dOpale (ULCO) Christophe Poupin.
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