TY - JOUR
T1 - A Synergic Activity of Urea/Butyl Imidazolium Ionic Liquid Supported on UiO-66-NH2 Metal–Organic Framework for Synthesis of Oximes
AU - Askari, Saeed
AU - Jafarzadeh, Mohammad
AU - Christensen, David Benjamin
AU - Kegnæs, Søren
PY - 2020
Y1 - 2020
N2 - An efficient supported ionic liquid catalyst is designed for condensation reaction of aldehydes and ketones. The Zr-based metal–organic framework (MOF), UiO-66-NH2, was initially functionalized with N,N′-dibutyl imidazolium ionic liquid (UiO-66-NH2-ILBr–), and then urea was attached to the ionic liquid (IL) to form a task-specific IL. Bromide was exchanged with tetrafluoroborate and the catalyst exhibits excellent performance for the synthesis of oximes. The ionic liquid/urea coupling showed a synergistic effect on the efficiency of the reaction. The supported catalyst system was recycled simply by filtration and reused for five times without significant decrease in its activity. The catalyst was characterized with PXRD, FTIR, TGA, XPS, BET, FE-SEM, EDS, elemental mapping and elemental analysis (CHN). Graphic Abstract: MOF/IL/urea catalytic system was used for the synthesis of oximes[Figure not available: see fulltext.]
AB - An efficient supported ionic liquid catalyst is designed for condensation reaction of aldehydes and ketones. The Zr-based metal–organic framework (MOF), UiO-66-NH2, was initially functionalized with N,N′-dibutyl imidazolium ionic liquid (UiO-66-NH2-ILBr–), and then urea was attached to the ionic liquid (IL) to form a task-specific IL. Bromide was exchanged with tetrafluoroborate and the catalyst exhibits excellent performance for the synthesis of oximes. The ionic liquid/urea coupling showed a synergistic effect on the efficiency of the reaction. The supported catalyst system was recycled simply by filtration and reused for five times without significant decrease in its activity. The catalyst was characterized with PXRD, FTIR, TGA, XPS, BET, FE-SEM, EDS, elemental mapping and elemental analysis (CHN). Graphic Abstract: MOF/IL/urea catalytic system was used for the synthesis of oximes[Figure not available: see fulltext.]
KW - Supported ionic-liquid phase
KW - Metal–organic frameworks
KW - UiO-66-NH2
KW - Oxime synthesis
U2 - 10.1007/s10562-020-03203-1
DO - 10.1007/s10562-020-03203-1
M3 - Journal article
SN - 1011-372X
VL - 150
SP - 3159
EP - 3173
JO - Catalysis Letters
JF - Catalysis Letters
ER -