António Palavra (AP) got his PhD in Chemical Engineering at Instituto Superior Técnico (IST) in 1980. He carried out experimental determinations of the equation of state of simple mixtures at low temperatures and high pressures. In 1981 AP started to work at the Dept. of Chemical Eng.School of Mines, Golden, Colorado, U.S.A. During 8 months he performed studies on vapour-liquid equilibrium of coal model compound mixtures at conditions similar to the extreme conditions at which coal liquids are produced and processed. Afterwards, he concluded his post-doc at USA carrying out, during 6 months, accurate PVT measurements on pure fluids with importance to energy related industries. In October 1984 AP left IST to the Dept. of Chemical Eng. of Imperial College, London, to carry out a sabatical (7 months) on thermophysical properties of fluids at high pressures. During this period he collaborated in the construction of the first prototype to carry out absolute measurements on density of pure fluids at high pressure (up to 5000bar) and performed also measurements of thermal conductivity of hydrocarbons in the same range of pressure. Although he had started his scientific studies with simple fluids, those carried out afterwards are on more complex fluids (hydrocarbons, ethanol, water, methanol, etc). At Delaware, U.S.A., 1987 AP carried out an experimental study on phase behaviour of a ternary system near the critical point of CO2. After this he started to develop research projects at the Dept. of Chemical Eng. of IST in the area of supercritical fluid extraction of biological compounds from microalgae and volatile oils from aromatic plants. Furthermore, measurements of the solubility of simple gases in micellar aqueous solutions of surfactants and in a media for the cultivation of a bacterial strain have been also carried out. AP completed the ¿titulo de Agregado¿ in 1988 and is since then an associated professor at Instituto Superior Técnico da Universidade de Lisboa In the last 15 years he has carried out experimental studies in the following areas: supercritical extraction of natural products from aromatic plants and microalgae, supercritical micronization of pharmaceuticals and oxidation reactions of hydrocarbons in supercritical media. On the other hand, he has also developed projects in the areas of enzymatic reactions at high pressures and solubility of simple gases in micellar aqueous solutions at atmospheric pressure. AP implemented collaborations with foreign researchers from the area of Chemical Eng., Prof. Kidnay (School of Mines), Dr Straty (NIST-NBS), Prof. Reverchon (university of Salerno, Italy) and Prof. Urieta (University of Saragoza). AP was the supervisor of 14 PhD students, 4 Post-Docs, 4 Master MSc and 1 Sabatical. He was involved in 14 scientific projects in Portugal, Spain, England and United States, being the Principal Investigator of 8. Also, he has collaborated in the construction of 19 prototypes to carry out the measurements in Portugal, Spain, England and USA. Furthermore, during his scientific career AP published more than 96 original research articles, reviews and book chapters with a total of more than 3300 citations (h-index 33, scopus), besides 5 patents and more than 90 presentations in international conferences with invited lectures, oral communications and poster presentations.