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. Quality Control of: Tetrapropylammonium bromide
The use of silicalite, a zeolitic form of silica, is suggested as a means of purifying samples prior to the determination of chlorinated biphenyls (CBs), particularly those which are heavily contaminated with petroleum derived n-alkanes. Experiments using mussel, fish and sediment extracts show that CBs are recovered quantitatively after silicalite treatment of lipid extracts.
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. Quality Control of: Tetrapropylammonium bromide
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI