Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 61, Issue 1, Pages 259-268Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.1c04015
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The hydrolysis kinetics of 7-methyl-1,5,7-triazabicyclo [4.4.0] dec-5- enium acetate [mTBDH] [OAc] were comprehensively studied to investigate its stability for dry-jet wet spinning applications and recovery methods. The decomposition behavior was analyzed and characterized by NMR, CE, and TGA. Kinetic models were formulated for stability prediction and compared with similar compounds DBNH and DBUH.
The hydrolysis kinetics of 7-methyl-1,5,7-triazabicyclo [4.4.0] dec-5- enium acetate [mTBDH] [OAc] was investigated in a comprehensive study by the utilization of the well-known Schlenk technique to achieve a better understanding of its stability for dry-jet wet spinning applications (e.g., Ioncell) and due to the course of operation for recovery methods like fractional distillation. Decomposition behavior as a function of temperature, time, acid-base stoichiometry, and water content was extensively analyzed and characterized by nuclear magnetic resonance spectroscopy (NMR), capillary electrophoresis (CE), and thermogravimetric analysis (TGA). Furthermore, kinetic models were formulated for the prediction of the stability and the results were compared with the closely related amidine-based analogues 1,5- diazabicyclo[4.3.0]non-5-enium acetate [DBNH] [OAc] and 1,8-diazabicyclo[5.4.0]undec-7-enium acetate [DBUH] [OAc].
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