Amine-Functionalized MIL-125 with Imbedded Palladium Nanoparticles as an Efficient Catalyst for Dehydrogenation of Formic Acid at Ambient Temperature

In paper electrode materials with palladium nanoparticles on polymer matrix substrates for energy sources have been formed. Nanocomposites were investigated by atomic force and scanning electron microscopy. The catalytic activity of formed electrodes in the formic acid oxidation reaction was evaluated by voltammetry method.

Download Full-text

A Process for Hydrogen Production from the Catalytic Decomposition of Formic Acid over Iridium—Palladium Nanoparticles

Materials ◽

10.3390/ma14123258 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3258

Author(s):

Hamed M. Alshammari ◽

Mohammad Hayal Alotaibi ◽

Obaid F. Aldosari ◽

Abdulellah S. Alsolami ◽

Nuha A. Alotaibi ◽

...

Keyword(s):

Hydrogen Production ◽

Formic Acid ◽

Activated Charcoal ◽

Palladium Nanoparticles ◽

Room Temperature ◽

Catalytic Decomposition ◽

Conversion Yield ◽

Production Of Hydrogen ◽

Commercial Applications

The present study investigates a process for the selective production of hydrogen from the catalytic decomposition of formic acid in the presence of iridium and iridium–palladium nanoparticles under various conditions. It was found that a loading of 1 wt.% of 2% palladium in the presence of 1% iridium over activated charcoal led to a 43% conversion of formic acid to hydrogen at room temperature after 4 h. Increasing the temperature to 60 °C led to further decomposition and an improvement in conversion yield to 63%. Dilution of formic acid from 0.5 to 0.2 M improved the decomposition, reaching conversion to 81%. The reported process could potentially be used in commercial applications.

Download Full-text

Efficacy and temperature dependence of 60% and 85% formic acid treatment against Varroa destructor

Apidologie ◽

10.1007/s13592-021-00859-5 ◽

2021 ◽

Author(s):

Xenia STEUBE ◽

Patricia BEINERT ◽

Wolfgang H. KIRCHNER

Keyword(s):

Formic Acid ◽

Ambient Temperature ◽

Varroa Destructor ◽

Acid Treatment ◽

Treatment Success ◽

Late Summer ◽

Active Principle ◽

Brood Chamber ◽

Model Treatment ◽

Lower Variability

AbstractThe ectoparasitic mite Varroa destructor is considered one of the main threats to the western honey bee (Apis mellifera). Efficient pest management is crucial, and the evaporation of formic acid (FA) is an active principle that could be adopted. However, the usage of FA has an extreme variable efficacy depending on several conditions, ambient temperature among them. Cooler conditions, as they usually occur in Central Europe in late summer and autumn, can negatively affect treatment success. Our study aims to evaluate factors that influence the efficacy of different FA treatments. Over a period of 8 years, we investigated the effect of ambient temperature, hive size and dispenser type on the treatment success with 60% and 85% FA and consolidated those factors in a linear regression model. Treatment with 60% FA shows higher variability, and often lowered efficacy, especially in double brood chamber hives. In contrast, 85% FA treatment achieves higher efficacy and lower variability and shows significantly diminished dependence on ambient temperature.

Download Full-text