RESUMEN
The considerations for use of compact nuclear magnetic resonance in a large-scale industrial environment clearly differ from those in academic and educational settings and even from those in smaller companies. In the first part of this article, these differences will be discussed along with the additional requirements that need to be fulfilled for successful applicability in different use cases. In the second part of the article, outcomes from different research activities aiming to fulfill these requirements will be presented with a focus on an online reaction-monitoring study on a lab-scale nucleophilic chlorination reaction.
RESUMEN
Interaction of lanthanum isopropoxide with molybdenum(VI) alkoxides in La/Mo ratios varying from 3:1 to 1:1 in acetophenon or allyl alcohol as solvents offers nanosized poorly crystalline products of complex composition, where the precipitation of Mo-rich ones is followed by the formation of La-rich ones with conservation of the reaction stoichiometry in total. Thermal treatment of the precipitates at temperatures over 700 °C leads to the formation of stoichiometric phases of the α- and ß-La2Mo2O9 compositions. Introduction of smaller Re(3+) cations such as Sm(3+) by doping favors stabilization of the La2-xRExMo2O9 phase with improved crystallinity even after lower-temperature thermal treatment. The doping is successful only when the Re(3+) (Sm(3+), Eu(3+), and Tb(3+)) is introduced as an alkoxide: application of Re(3+)(acac)3 as Re(3+) sources leads to materials free from Re(3+). The produced samples were characterized by XPD, TGA, SEM, and TEM studies as well as the luminescent properties for the Sm(3+)-doped phases.