The rate of copper II/zinc cementation from copper sulphate solutions in the absence and in the presence of methanol (CH3OH) and dimethyl sulphoxide (DMSO) has been studied and the reaction was found to follow first-order kinetics. The influence of several parameters on the course of the reaction, such as cylinder rotation speed, initial concentration of Cu ions, temperature and concentration o...

Radiation processing of cometary, planetary, and interstellar ices has been investigated by irradiating mixtures of H2O and CO near 16 K with 0.8-MeV protons. IR spectroscopy and isotopic substitution showed that H and OH, from H2O, added to CO to form HCO, H2CO, HCOOH, and CH3OH. A values (integrated spectral absorbances) for HCOOH and HCO trapped in H2O ice were measured for the first time. T...

While high-angular resolution observations have clarified that water masers originate from shocks associated with protostellar jets, different environments have been proposed in several sources to explain the origin of CH3OH masers.

Atomically dispersed metals maximize the number of catalytic sites and enhance their activity. However, challenging synthesis characterization strongly complicates optimization. Here, aim is to demonstrate that tuning electronic environment atomically metal catalysts through modification edge coordination an effective strategy performance. This article focuses on optimizing nickel-based electro...

0021-9517/$ see front matter 2010 Elsevier Inc. A doi:10.1016/j.jcat.2010.11.017 ⇑ Corresponding author. E-mail addresses: [email protected] (M. Neuro Iglesia). The effects of acid identity on CH3OH dehydration are examined here using density functional theory (DFT) estimates of acid strength (as deprotonation energies, DPE) and reaction energies, combined with rate data on Keggin polyoxometala...

The wealth of air quality information provided by satellite infrared observations of ammonia (NH3), carbon monoxide (CO), formic acid (HCOOH), and methanol (CH3OH) is currently being explored and used for a number of applications, especially at regional or global scales. These applications include air quality monitoring, trend analysis, emissions, and model evaluation. This study provides one o...

We present some experimental results on the chemical-physical effects induced by ion irradiation on frozen methanol (CH3OH), pure and mixed with water (H2O). We have studied, by “in situ” infrared (IR) spectroscopy, samples of solid CH3OH and H2O:CH3OH mixtures before and after irradiation, with 3-30 keV ions, at low pressures and low temperature (10 K). We have derived the integrated absorbanc...

Thermal decomposition of CH(3)OH diluted in Ar has been studied by monitoring H atoms behind reflected shock waves of 100 ppm CH(3)OH + Ar. The total decomposition rate k(1) for CH(3)OH + M → products obtained in this study is expressed as, ln(k(1)/cm(3) molecule(-1) s(-1)) = -(14.81 ± 1.22) - (38.86 ± 1.82) × 10(3)/T, over 1359-1644 K. The present result on k(1) is indicated to be substantiall...