In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1941-30-6, name is Tetrapropylammonium bromide, introducing its new discovery. Application In Synthesis of Tetrapropylammonium bromide
A silicalite clay composite membrane was produced by hydrothermal deposition using tetraethyl orthosilicate (TEOS) as silica source, tetra-n-propylammonium bromide (TPABr) as template and KOH as mineralizing agent. Silicalite was deposited in the mesopores and on the surface of porous ceramic membrane supports made from a naturally available clay mineral abundantly found in the central region of Morocco (Meknes). Three flat-disc membrane supports were prepared by uniaxial pressure on pure clay powder (AS), mixture of clay and activated carbon (5%, w/w) (AC) and mixture of clay and starch (20% w/w) (AA). The porosity of membrane supports was studied as function of the final calcination temperature. It was found that the mesopores contribution to porosity was 25%, however their contribution to the specific surface area is more than 90%. The mesopores structure was investigated. XRD confirms the formation of crystalline silicalite layers inside the mesopores of the clay flat-disc supports. Typical MFI-type zeolite morphology was confirmed by SEM. The scope and limitations of the membranes in terms of selectivity between SF6 and N2, is discussed.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 1941-30-6 is helpful to your research. Application In Synthesis of Tetrapropylammonium bromide
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI