The role of lanthanides as promoters on cobalt-based catalysts for Fischer-Tropsch synthesis was evaluated under relevant biomass-derived syngas mixtures. Cerium, lanthanum and a combination them were impregnated an industrial micro-catalyst. Lanthanide incorporation did not affect significantly the morphology catalyst, although it reduced available surface cobalt. Catalytic tests revealed that...

Abstract A dual sodium and sulfur promoted haematite, representative of a candidate Fischer-Tropsch to olefins (FTO) catalyst, is prepared contrasted with the performance an unpromoted hematite sample in ambient pressure CO hydrogenation reaction at 623 K as function time-on-stream (0–24 h). In-situ post-reaction temperature-programmed oxidation measurements show carbon evolutionary phase catal...

The water-gas shift reaction is one of the most important reactions in industrial hydrogen production and plays a key role Fischer-Tropsch-type synthesis, which widely believed to generate hydrocarbons deep carbon cycle but little known at extreme pressure-temperature conditions found Earth's upper mantle. Here, we performed extensive ab initio molecular dynamics simulations free energy calcula...

Introduction In the last years there is a growing interest in the development and study of alternative fuels across various transport industries. Aviation industry is no exception to this trend. Indeed, the International Air Transport Association (IATA) established the importance of sustainable low-carbon alternative aviation drop-in fuels in their recent Technology Roadmap [1] in order to repl...

Kaolin-SO3H nanoparticles were prepared via reaction of kaolin and chlorosulfonic acid and characterized by FT-IR, XRD, FESEM, TEM, XRF, EDS, BET and TGA. The activity of this green catalyst was probed by the synthesis of aryl diazonium salts as the starting reactant and then, their diazo coupling with  2-naphthol to form azo dyes in a solvent-free medium at room temperature...

BACKGROUND AND OBJECTIVES Preterm infants commonly have transient hypothyroxinemia of prematurity after birth, which has been associated with deficits in general intellectual functioning, memory, attention, and academic achievement. However, research has predominantly focused on thyroxine levels in the first 2 weeks of life and outcomes are limited to the preschool period. Our objective was to ...

Design and operation of a "six-flow fixed-bed microreactor" setup for Fischer-Tropsch synthesis (FTS) is described. The unit consists of feed and mixing, flow division, reaction, separation, and analysis sections. The reactor system is made of five heating blocks with individual temperature controllers, assuring an identical isothermal zone of at least 10 cm along six fixed-bed microreactor ins...