Application of 1941-30-6, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 1941-30-6, name is Tetrapropylammonium bromide. In an article£¬Which mentioned a new discovery about 1941-30-6
In situ 11B MAS NMR study of the synthesis of a boron-containing MFI type zeolite
The transformation of porous glass spheres into MFI-spheres in a synthesis with low water content (3 moles H2O per mole TO2 with T = Si, B, Al) was observed by in situ 11B MAS NMR spectroscopy in two synthesis procedures: (i) sealed quartz ampoules containing the reaction mixture were exposed to the reaction temperature in an oven for the reaction time and then put into the spinner and analyzed at room temperature; (ii) sealed quartz ampoules containing the reaction mixture were put into the spinner, then heated up in the rotating spinner to the reaction temperature and analyzed at this temperature in dependence of the reaction time. The yield of crystalline material could be determined by means of the intensity of a narrow signal at -3.7 ppm in the 11B MAS NMR spectra. A fast exchange exists between three- and four-coordinated boron in solution, and the relative amount of boron in both coordinations can be determined from the value of the chemical shift of the “liquid” boron signal. Thus, information about changes in the basicity of the solution could be obtained in situ from the chemical shift of the liquid boron signal. It could be shown that crystallization of the zeolite takes place with a strongly increased crystallization time under the influence of the about 105-fold of the standard acceleration of gravity.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.1941-30-6. In my other articles, you can also check out more blogs about 1941-30-6
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI