Polytechnic University of Valencia

About: Polytechnic University of Valencia is a education organization based out in Valencia, Spain. It is known for research contribution in the topics: Catalysis & Population. The organization has 16282 authors who have published 40162 publications receiving 850234 citations.

Microgrid architectures for low voltage distributed generation

Abstract: The high penetration of distributed generators, most of them based on renewable energy sources, is modifying the traditional structure of the electric distribution grid. If the power of distributed generators is high enough to feed the loads of a certain area, this area could be disconnected from the main grid and operate in islanded mode. Microgrids are composed by distributed generators, energy storage devices, intelligent circuit breakers and local loads. In this paper, a review of the main microgrid architectures proposed in the literature has been carried out. The microgrid architectures are first classified regarding their AC or DC distribution buses. Besides, more complex microgrid architectures are shown. Both advantages and disadvantages of each one of the microgrid families are discussed.

Metal Organic Frameworks as Versatile Hosts of Au Nanoparticles in Heterogeneous Catalysis

Abstract: The present review describes the state of the art of the use of metal organic framework (MOF)-encapsulated Au nanoparticles (NPs) as heterogeneous catalysts. The purpose is to show that catalysts with very good performance, frequently among the most active Au catalysts reported so far, can be obtained by incorporation of Au NPs inside MOFs. The available data indicate that the high catalytic activity of MOF-encapsulated Au NPs derives from (i) small particle size, (ii) high dispersion and homogeneous distribution inside MOFs crystals, (iii) stabilization of particle size by confinement of Au NPs inside MOFs cages, and (iv) the synergy that can arise by the combination of the activity of Au NPs and MOFs. After some introductory sections presenting general issues commenting about the relevance of Au catalysis, how to determine the internal versus external location of Au NPs, and evidence in support for catalyst stability, this mini review covers reactions using Au@MOFs as catalysts for oxidations, reduction...