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Chemical Structure| 4437-85-8

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Product Citations

Abraha, Yuel W. ; Jacobs, Francois J. F. ; Brink, Alice ; Langner, Ernst H. G. ;

Abstract: Direct mixing (de novo) and Solvent Assisted Ligand Exchange (SALE) are the main methods used for the synthesis of Mixed-Linker Zeolitic Imidazolate Frameworks (ML-ZIFs). ML-ZIFs with combined -NO2 and -Br/-Cl functionalities were prepared via both synthetic routes. Thereafter the CO2 uptake of the ML-ZIFs were compared, as well as their abilities to fixate CO2 with epoxide substrates. The de novo synthesis resulted in ML-ZIFs with SOD topologies, 60: 40 (-NO2: -Br/-Cl) functionality ratios, higher porosities, better thermal stability and higher CO2 uptake than equivalent SALE products. SALE resulted in smaller ML-ZIF crystallites, only ∼ 10% incorporation of -Br/-Cl functionalized imidazolate linkers, and phase change during activation. ML-ZIF-7Cl, obtained from direct mixing, resulted in the highest CO2 uptake (90 cm3 g-1), in line with its higher porosity. ML-ZIF-7Cl, in combination with tetrabutylammonium bromide (TBAB), showed a high catalytic activity (TOF of 446 h-1) for the fixation of CO2 with propylene oxide and was reusable for up to 4 cycles without loss in activity.

Keywords: Zeolitic imidazolate frameworks (ZIFs) ; Solvent assisted ligand exchange (SALE) ; De Novo synthesis ; CO2 uptake ; CO2 fixation

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Product Details of [ 4437-85-8 ]

CAS No. :4437-85-8
Formula : C5H8O3
M.W : 116.12
SMILES Code : O=C1OCC(CC)O1
MDL No. :MFCD00143317
InChI Key :ZZXUZKXVROWEIF-UHFFFAOYSA-N
Pubchem ID :107282

Safety of [ 4437-85-8 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313
 

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