The author of 《Synthesis, characterization and catalytic activity of ionic liquid mimic halides modified MCM-41 for solvent free synthesis of phenyl glycidyl carbonate》 were Ramalingam, R. Jothi; Appaturi, Jimmy Nelson; Pulingam, Thiruchelvi; Ibrahim S, Noora; Al-Lohedan, Hamad A.. And the article was published in Materials Chemistry and Physics in 2019. Application of 624-73-7 The author mentioned the following in the article:
The different type of halide modified mesoporous silica catalysts were prepared via post-grafting technique using meso-silica derived from rich husk by simple sol-gel method. The physico chem. characterizations of as prepared catalysts were characterized using FT-IR, N2-sorption-desorption study, 13C CP/MAS NMR and SEM techniques. FT-IR and 13C CP/MAS NMR revealed the effective anchorage of imidazole and 1,2-dihaloethane on the MCM-41. SEM anal. images shows the comprise worm-like agglomerated structure which was similar to MCM-41. The catalysts were then used in cycloaddition of carbon dioxide and Ph glycidyl ether under solvent free or less conditions. Among the prepared catalyst, Br-immobilized MCM-41 shows higher catalytic activity (96.7%) under ambient reaction by adopting following conditions such as 100°C, 20 bar initial CO2 pressure, 300 mg catalyst mass and 3 h. The conversion of Ph glycidyl ether using ImI-MCM-41 and ImCl-MCM-41 are 77.3% and 26.4% resp. The catalytic results are confirmed that the synergistic effect owing to the stronger nucleophilicity of bromide- and amine could be promoted the reaction smoothly. The catalyst was recovered and reused for four times without a significant decrease in activity or product selectivity. A possible site for CO2 activation by ImBr-MCM-41 catalyst could be the potential ionic liquid mimic’s halide immobilized MCM-41 like material for efficient conversion of the substrates such as Ph glycidyl ether and Epoxy hexane for cycloaddition reactions have been demonstrated.1,2-Diiodoethane(cas: 624-73-7Application of 624-73-7) was used in this study.
1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Application of 624-73-7
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com