Encapsulation and Dynamic Behavior of Methanol and Formaldehyde inside Open‐Cage C₆₀ Derivatives

Abstract

Methanol (CH 3 OH) and formaldehyde (H 2 CO) molecules were inserted into an open-cage C 60 derivative with al arge opening, under high-pressure and high-temperature conditions in solution. Isolation of their molecular complexes in pure form was achieved by the use of recycling HPLC with Buckyprep columns. 1 HNMR spectroscopy, single-crystal Xray diffraction studies,a nd DFT calculations revealed the orientation of the encapsulated CH 3 OH and H 2 CO,b oth in solution and in the solid state,and the results show that the CH 3 group of the CH 3 OH and the carbonyl group of the H 2 CO point to the bottom of the cages.F urthermore,t he dynamic behavior of the CH 3 OH and H 2 CO were studied at the molecular level. Methanol (CH 3 OH) and formaldehyde (H 2 CO) are two of Angewandte Chemie Communications 2759

Experimental Investigation of Methanol Conversion Factor to Formaldehyde in a Pilot Reactor

“…If the amount of methanol entering is not set, its extra amount in system decomposes into water and dimethyl oxide at generated high temperatures in reactor. Equation 4 shows this mechanism [20,21].…”

“…Since then, evaporated methanol with air enters the reactor and after passing through the silver bed at the end of reactor enters a heat exchanger that hot gases are cooled in this exchanger. In the last 60 to 70 years, numerous researches with grasping the importance of catalysts, especially metal catalysts in production of chemicals materials in industrial sizes have been widely reported in literature [1][2][3][4][5][6][7][8]. Performing chemical processes using metal catalysts has been considered due to the less cost of operational design in industrial sizes; due to the fact that they are in more suitable conditions in terms of temperature and pressure.…”

[60]Fullerene‐Based Macrocycle Ligands

“…Molecules as large as methanolh as been successfully put into the open-cage C 60 derivatives prepared through this procedure. [20] Insertion of sulfur,o xygen and nitrogen has been achieved on the rim of the orifice as in compounds 19-23 (Scheme 8). [20][21] We have reported anumber of open-cage fullerene derivatives.…”

“…[20] Insertion of sulfur,o xygen and nitrogen has been achieved on the rim of the orifice as in compounds 19-23 (Scheme 8). [20][21] We have reported anumber of open-cage fullerene derivatives. [22] Most of the known open-cage fullerene derivatives are not suitable ligandsf or metal ions due to the Scheme6.Selectivep entasubstitution of corannulene reported by Scott.…”

Trace carbonyl analysis in water samples by integrating magnetic molecular imprinting and capillary electrophoresis

“…The more frequently used detection methods include spectrophotometry, 4 gas chromatography-mass spectrometry (GC-MS) 5,6 and high-performance liquid chromatography (HPLC). [7][8][9][10] Owing to the high sensitivity and easy operation, HPLC is more preferable in the standard methods, such as EPA method 8315A. 11 Because carbonyls have high activity and polarity and lack uorophore and chromophore, a derivatization process must be applied before the chromatographic detection.…”