Recovery of PhSO3K from Industrial Waste Based on Solid–Liquid Equilibrium of the PhSO3K–K2CO3–H2O System
摘要:
The primary aim of this study is to develop a recovery process for PhSO3K from the industrial waste of Qpe (quizalofop-p-ethyl) production. The solubility data for the PhSO3K-K2CO3-H2O system at 15, 25, 35, 45, and 55 degrees C were determined to obtain the phase diagram of the system. Moreover, the different crystallization fields in the phase diagram of 25 degrees C were analyzed. The separation technology of PhSO3K from the PhSO3K-K2CO3-H2O system was designed based on the phase diagram. Furthermore, the PhSO3K and K2CO3 in a wastewater from Qpe production were crystallized in sequence by evaporation according to the designed method. The organic impurities precipitated concomitantly with PhSO3K were washed out by ethanol. Finally, the purified PhSO3K was converted to (R)-ethyl O-bezenesulfonyl lactate, the intermediate of Qpe production.
Garot, C.; Javed, T.; Mason, T. J., Bulletin des Societes Chimiques Belges, 1996, vol. 105, # 12, p. 755 - 758
作者:Garot, C.、Javed, T.、Mason, T. J.、Turner, J. L.、Cooper, J. W.
DOI:——
日期:——
[EN] PROCESS FOR PREPARING (R)-ARYLOXYPROPIONIC ACID ESTER DERIVATIVES<br/>[FR] PROCEDE DE PREPARATION DE DERIVES D'ESTER D'ACIDE (R)-ARYLOXYPROPIONIQUE
申请人:KOREA RES INST CHEM TECH
公开号:WO2004002925A3
公开(公告)日:2004-06-24
IMFELD, M.;SUCHY, M.;VOGT, P.;LUKAC, T.;SCHLAGETER, M.;WIDMER, E., HELV. CHIM. ACTA, 1982, 65, N 4, 1233-1241
作者:IMFELD, M.、SUCHY, M.、VOGT, P.、LUKAC, T.、SCHLAGETER, M.、WIDMER, E.
DOI:——
日期:——
Ergebnisse der Verfahrensforschung, I. Synthese von<i>o</i>-{(+)-D-2-[4-(4-(Trifluormethyl)phenoxy)phenoxy]propionyl}-aceton-oxim