We use thermochemical equilibrium and kinetic calculations to model sulfur and phosphorus chemistry in the atmospheres of giant planets, brown dwarfs, low-mass stars, and extrasolar giant planets (EGPs). The chemical behavior of individual Sand P-bearing gases and condensates is determined as a function of pressure, temperature, and metallicity. Our results are independent of any particular mod...

Changes in chemical composition and digestibility of peanut hulls after a variety of thermochemical treatments were monitored. Mineral acids and base under elevated temperature (121°C) were generally ineffective for decreasing the fibrous, lignocellulosic component of the hulls. Only nitric acid-treatment effectively decreased the relative lignin content of the hulls. The 1ignin:nitrogen ratio ...

Widespread adoption of solar-thermochemical fuel production depends on its economic viability, largely driven by the efficiency of use of the available solar resource. Herein, we analyze the efficiency of two-step cycles for thermochemical hydrogen production, with emphasis on efficiency. Owing to water thermodynamics, isothermal H2 production is shown to be impractical and inefficient, irrespe...

Advance in GNC, particularly from miniaturized control electronics, reaction-wheels and attitude determination sensors make it possible to design surface probes and small robots to perform surface exploration and science on lowgravity environments. These robots would use their reaction wheels to roll, hop and tumble over rugged surfaces. These robots could provide “Google Streetview” quality im...

[1] Numerical modeling of mantle convection is challenging. Owing to the multiscale nature of mantle dynamics, high resolution is often required in localized regions, with coarser resolution being sufficient elsewhere. When investigating thermochemical mantle convection, high resolution is required to resolve sharp and often discontinuous boundaries between distinct chemical components. In this...

Due to the large amount of chemical data available, it is essential to organize them and given the numerous problems derived from applying spreadsheets, it motivated us to construct an improved tool geared to contain large amounts of data. This paper presents ThermInfo, a public web tool that integrates a database based upon a relational data specification for describing structural and thermoch...

Abstract The present study aims at providing insights into shock wave interference patterns in gas flows when a mixture different than air is considered. High-energy non-equilibrium of and $$\hbox {CO}_2$$ CO 2 – {N}_2$$ N over double-wedge ...

Conversion of biomass into biofuels (gaseous and liquid fuels) can be achieved primarily by biochemical and thermochemical processes [2]. Although biochemical technologies are well developed and widely used for biofuels production [3], however, the types of biomass can be used are limited. Thermochemical gasification appears to be a promising technology that can exploit the embedded energy with...

This paper investigates an innovative open thermochemical system dedicated to high density and long term (seasonal) storage purposes. It involves a hydrate/water reactive pair and operates with moist air. This work focuses on the design of and experimentation with a large scale prototype using SrBr2/H2O as a reactive pair (400 kg of hydrated salt, 105 kWh of storage capacity and a reactor energ...