Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， name: Tetrapropylammonium bromide, Which mentioned a new discovery about 1941-30-6
The coke formation on H-ZSM-5 zeolite during the catalytic cracking of alkanes constituting naphtha was investigated with a focus on the reaction route and the role of acid concentration and crystallite size of H-ZSM-5. To reveal the coke formation route, cracking of n-hexane, methylcyclopentane or methylcyclohexane was carried out on H-ZSM-5(Si/Al = 107). Cracking of n-hexane produced benzene, toluene and xylene (BTX) as secondary products from successive reaction routes through light alkenes. Only in the cracking of methylcyclopentane and methylcyclohexane, direct reaction routes partially contributed to the BTX formation. In any cases, most of the coke would be formed through BTX. The reaction of BTX into coke was analyzed from the catalytic results on Na+-exchanged and phosphorus embedded H-ZSM-5 with various crystallite sizes. The ratio of accumulated amounts of coke and BTX (coke/BTX ratio) was obtained as a measure of selectivity for coke formation. The coke/BTX ratio did not show a significant correlation with the acid concentration of catalysts, whereas the ratio gave a strong correlation with the crystallite size. H-ZSM-5 with smaller crystallite sizes would help BTX molecules escaping immediately out of micropores before being converted into coke precursor, which minimizes the coke formation.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, Recommanded Product: Tetrapropylammonium bromide, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 1941-30-6
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI