**About the Editors**

**Diego Luna** is currently a Professor of Organic Chemistry at the University of Cordoba, where he has carried out his research work for forty years in the fields of heterogeneous catalysis, homogeneous-heterogenized catalysis, fine chemistry and biotechnology, dedicating himself during the last decade mainly to the field of biofuels. Throughout these four decades, he has participated in more than 30 research projects, funded by the Spanish Ministry of Research and Science or by the EU. As a result of this research career, he has obtained 10 Invention Patents, and in 2007, he participated in the creation of the technology-based company (spin-off) SENECA GREEN CATALYSTS, SL, which was established to carry out the commercial exploitation of two of these patents, owned by the University of Cordoba and applied to the production of biodiesel. He has participated in ´ several hundred international congresses of his specialty, where he has presented more than 300 communications. He has published 94 book chapters and 192 scientific articles in high-impact international journals. Currently, his research group is involved, among other projects, in "obtaining biofuels, Fine Chemical products and hydrogen through triglyceride biorefinery", for which the concept of biorefinery is applied to the managemen<sup>t</sup> of oils and fats, preferably reused or inedible, in the paradigm of the so-called circular economy. Currently, he is also an Editorial Board Member of several peer-reviewed open access journals, published monthly online by MDPI, such as *Energies* (https://www.mdpi.com/journal/energies/editors) (ISSN 1996-1073; CODEN: ENERGA), *Catalysts* (ISSN 2073-4344; CODEN: CATACJ) and *Eng* (ISSN x123-x123).

**Antonio Pineda** is a chemist in the Organic Chemistry Department at the University of Cordoba, Spain. He completed his Ph.D. in 2013 at the University of Cordoba, focusing on the study of novel preparation methodologies for heterogeneous catalysts. Currently, he is working on the study of heterogeneous catalysts for biomass valorization processes such as oxidation of lignin derivatives or continuous-flow hydrogenation of platform molecules. He is a member of the Spanish Catalysis Society (SECAT).

**Rafael Estevez** is a postdoctoral researcher in the Organic Department at the University of Cordoba. He completed his Ph.D. in 2017 at the University of Cordoba, focusing on the catalytic valorization of glycerol. He was awarded with the Spanish Catalysis Society (SECAT) Best Doctoral Thesis in his field in 2018. Currently, he is working on heterogeneous catalysis for biomass valorization, focusing on the development of new biofuels from platform molecules such as glycerol and additives for (bio)fuels.
