Transition metal-substituted Keggin-type polyoxometalates as catalysts for adipic acid production

被引：19
|
作者：
Mouanni, Sihem [1 ]
Amitouche, Dahbia [1 ,2 ]
Mazari, Tassadit [1 ,2 ]
Rabia, Cherifa [1 ]
机构：
[1] USTHB, Fac Chim, Lab Chim Gaz Nat, BP32, Bab Ezzouar 16111, Algier, Algeria
[2] Univ Mouloud Mammeri, Tizi Ouzou UMMTO, Lab Chim Appl & Genie Chim, Algier, Algeria
来源：
APPLIED PETROCHEMICAL RESEARCH | 2019年 / 9卷 / 02期
关键词：
Keggin-type heteropoly salts; Oxidation; Hydrogen peroxide; Cyclohexanone; Adipic acid; HYDROGEN-PEROXIDE; SELECTIVE EPOXIDATION; HETEROPOLY COMPOUNDS; OXIDATION; CYCLOHEXANONE; CHLORIDE; OLEFINS; KETONES; OXYGEN; ROUTE;
D O I：
10.1007/s13203-019-0226-0
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The adipic acid (AA) production was carried out in two stages: oxidation of cyclohexanone (-one) by Keggin-type polyoxometalate (POM), followed by oxidation of this latter by hydrogen peroxide. The process lasts 20h and the temperature is maintained at 90 degrees C. AA is then recovered by cold crystallization (4 degrees C). The POMs have as formula HMPMo12O40 (M:Co, Ni, Mn, Cu or Zn). The materials were characterized by FT-IR and UV-Vis spectroscopies and by thermogravimetric analysis. The purity of adipic acid was confirmed by FT-IR and C-13 and H-1 NMR analysis. The effects of POM composition, catalyst/-one molar ratio and the cyclohexanol addition to -one on adipic acid yield were examined. The whole catalysts were found to be effective toward cyclohexanone oxidation and the highest yield (53%) was obtained with HZnPMo12O40 system for a catalyst/-one molar ratio of 1.89x10(-3). The alcohol addition to -one has a negative effect on adipic acid formation.
引用
收藏
页码：67 / 75
页数：9
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