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Application of an immobilized ionic liquid for the preparation of hydroxylamine via hydrolysis of cyclohexanone oxime
Author(s) -
Wang Shuangyu,
Liu Jiaqi,
Cheng Peng,
Li Zhihui,
Zhang Dongsheng,
Yang Qiusheng,
Zhao Xinqiang,
Wang Yanji
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000370
Subject(s) - cyclohexanone oxime , cyclohexanone , hydroxylamine , catalysis , chemistry , oxime , hydrolysis , ionic liquid , yield (engineering) , protonation , organic chemistry , inorganic chemistry , materials science , ion , metallurgy
Preparation of hydroxylamine via hydrolysis of cyclohexanone oxime was studied over porous SiO 2 supported acid ionic liquid catalyst. The catalyst [SPIPTES]CF 3 SO 3 @SiO 2 was prepared through sol‐gel method and characterized by elemental analysis, IR and TG, etc. Various parameters such as reaction temperature and time, catalyst amount were investigated systematically. The optimized reaction conditions investigated were catalyst:cyclohexanone oxime (mass ratio) 4 : 1, conducted at 60 °C for 1 h. Since the present hydrolysis reaction is controlled by thermodynamics, the conversion of cyclohexanone oxime could not be very high. However, reasonable result was achieved under the optimized reaction conditions. Cyclohexanone oxime conversion was 38.41 % and NH 2 OH yield was 37.65 %. Additionally, combining experiments with density functional theory calculations, a possible catalyst structure and reaction pathway involved protonated cyclohexanone oxime mechanism was proposed for the present hydrolysis in this study.