The Synthesis and Purification of the Carbamoylmethylphosphine Oxides*

Extraction of nitric acid from aqueous media with Oϕ D(iB)CMPO–n‐dodecane

“…The CMPO was purified according to a procedure developed by Gatrone et al (1987) and Tse and Vandegrift (19891, with modifications supplied by Vandegrift (1993). The essential purification steps included (1) dissolving the CMPO in n-heptane, (2) filtering the resulting solution, (3) vigorously mixing Amberlyst A-26 (Rohm and Haas Company) anionic resin that had been converted from the C1-to the OH-form and Dowex AG MP-50 (Dow Chemical Company) cationic resin with the solution to remove charged particles, (4) filtering the solution to remove the resin particles, (5) washing the organic solution with aqueous sodium carbonate solution, (6) washing the organic again with mild aqueous nitric acid, (7) washing the organic with ultrapure water, (8) drying the organic with anhydrous sodium sulfate, (9) vacuum-evaporating about two-thirds of the n-heptane from the solution, (10) cooling the solution to allow the CMPO to crystallize, (11) grinding the crystals, and (12) drying the crystals under vacuum.…”

Extraction of nitric acid, uranyl nitrate, and bismuth nitrate from aqueous nitric acid solutions with CMPO

“…It was desired that the purity of the CMPO be >99% for solvent extraction tests in order to quantify the equilibrium constants for extraction of selected metal species. The CMPO was purified according to a procedure developed by Gatrone et al (1987) and Tse and Vandegrift (1989), with modifications supplied by Vande-gift (1993). Details of the purification as actually performed are reported here.…”

Molecular Dynamics Calculation of Counter Anion Effects on Liquid-Liquid Extraction of Alkali Metal Ions with Spirobenzopyran Derivatives Bearing a Monoazacrown Ether Moiety

“…Computer simulation has been applied only to extraction of uranium ion from water/ chloroform biphase and to extraction of nickel ion from water/pentane biphase [11][12][13][14]. When a metal complex is handled in molecular dynamics, potential files between its metal atom and other atoms are necessary, but the files are still undeveloped.…”