Bimodal Porous Catalysts

Dear Colleagues,

The porosity–catalysis binomial is difficult to dissociate and has provided great advances both at the academic and the industrial level. Along with the design of active centers, another key aspect in heterogeneous catalysis is the nature of the support that controls the morphology of the catalyst, giving it a greater or lesser surface area and, also, porosity. Traditionally, porous catalysts have been classified as micro, meso or macroporous depending on the size of their cavities. This classification is not exclusive with respect to the chemical nature of the supports or their degree of order (crystalline or amorphous solids). Thus, we can find examples such as silicas, aluminas, metal oxides, phosphates, metals, carbonaceous materials, polymers, and coordination compounds. However, in many cases, it has been shown that having a unimodal pore system can present disadvantages with respect to systems with hierarchical porosity. The combination of two pore systems (micro–meso, micro–macro, meso–macro, etc.) normally provides significant improvements in the processes of mass diffusion and accessibility, both from the reagents to the active centers and from the latter to the medium of reaction for the products. Owing to their diversity and performance, hierarchically porous solids have attracted considerable attention as an important family of functional materials in recent years in a large variety of applications, and especially in catalysis: CO oxidation, oxidation of VOCs, hydrogenation, hydrodesulfurization, Fischer–Tropsch synthesis, C–C coupling reactions, photocatalysis, petrochemical processes, etc.

In this context, I am inviting you to submit your recent achievements to this Special Issue on “Bimodal Porous Catalysts” in the form of original research articles or short reviews. The titled Special Issue aims to cover current studies in the field of synthesis and characterization, and application in heterogeneous catalysis. Therefore, new synthesis routes (this including the use of soft or hard templates, biomimetic approaches, etc.), thorough characterizations, catalytic processes, and fundamental understanding of structure–activity relationships will be welcome.

Prof. Dr. Pedro Amorós
Guest Editor

Manuscript Submission Information

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• Hierarchical porosity
• Advanced or new synthesis routes
• Hard templates
• Soft templates
• Heterogeneous catalysis
• Nanostructured photocatalysts