In heterogeneous catalysis, the catalyst is in a different phase from the reactants. HPLC of Formula: C7H9N, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 108-47-4, name is 2,4-Dimethylpyridine. In an article£¬Which mentioned a new discovery about 108-47-4
Multiwavelength-Selective Ionization of Organic Compounds in an Ion Mobility Spectrometer
Laser multiphoton ionization is used to demonstrate the possibility of an added dimensionality in analysis for plasma chromatography, i.e., wavelength selectivity.In resonant two-photon ionization a molecule will ionize if the two-photon energy is greather than the ionization potential of the molecule and there is a real intermediate state resonant with the first photon.With this scheme a crude spectral selectivity is possible among groups of molecules with widely differing ionization potentials.This technique may be useful for simplifying the analysis of mixtures of mo lecules in a plasma chromatograph and may aid in the separation and identification of molecules, in particular, isomers.A wide range of useful data are collected and presented in a ion mobility spectrometer at elevated temperatures.In addition, an ArF excimer laser operating at 194 nm is introduced as a general ionization source, capable of ionizing the vast majority of organic compounds.
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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