Ruthenium on Carbonaceous Materials for the Selective Hydrogenation of HMF

We report the use of Ru catalysts supported in the activated carbon (AC) and carbon nanofibers (CNFs) for the selective production of liquid fuel dimethylfuran (DMF) and fuel additives alkoxymethyl furfurals (AMF). Parameters such as the reaction temperature and hydrogen pressure were firstly investigated in order to optimise the synthesis of the desired products. Simply by using a different support, the selectivity of the reaction drastically changed. DMF was produced with AC as support, while a high amount of AMF was produced when CNFs were employed. Moreover, the reusability of the catalysts was tested and deactivation phenomena were identified and properly addressed. Further studies need to be performed in order to optimise the stability of the catalysts

A new decavanadate polyoxovanadate nanocluster: synthesis, characterization and rapid adsorption of methylene blue

<p>A new decavanadate polyoxovanadate nanocluster, [2-ampH]₆[V₁₀O₂₈]∙2H₂O (<b>1</b>), was synthesized through reaction between ammonium vanadate and 2-aminopyridine at pH = 2. Nanocluster <b>1</b> was characterized by IR, elemental analysis, and X-ray crystallography. <b>1</b> was found to adsorb and desorb dyes and may have widespread application in wastewater treatment. The utility of <b>1</b> for adsorption of methylene blue was studied. The adsorbed dyes can be easily desorbed, and <b>1</b> has full efficiency after five cycles.</p