Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Safety of 2,4-Dimethylpyridine. Introducing a new discovery about 108-47-4, Name is 2,4-Dimethylpyridine
The impact of pressure and frictional heating on retention, selectivity and efficiency in ultra-high-pressure liquid chromatography
The effects of pressure and frictional heating deserve serious consideration in ultra-high-pressure liquid chromatography (UHPLC) separations, as the pressures used can be three times greater than those in conventional high-performance LC (HPLC). We show that the effects of pressure alone can give useful selectivity effects, especially when separating molecules of different size. Frictional heating effects can cause serious losses in column efficiency and may also give changes in the selectivity of the separation. Nevertheless, the detrimental effect of frictional heating can be reduced, for instance by the judicious selection of column thermostat and particle type. In practical situations, pressure and heating effects occur simultaneously and can cause problems in transferring methods from conventional HPLC to UHPLC. In reversed-phase separations, the typical effect of increased retention with increasing pressure is counteracted by the reduction in retention that usually occurs at elevated temperatures.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Safety of 2,4-Dimethylpyridine, you can also check out more blogs about108-47-4
Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis