In:
The Canadian Journal of Chemical Engineering, Wiley, Vol. 101, No. 1 ( 2023-01), p. 463-473
Abstract:
The work provides experimental data of the methyl trifluoroacetate (MeTFA)— 2 , 2 , 2 ‐trifluoroacetic acid (TFA) mixture distillation process in the presence of N ‐Methyl‐ 2 ‐pyrrolidone (NMP) at atmospheric pressure (99.2 kPa) and within a temperature range of T ≤ 230°C. Forming PIL between TFA and NMP (methylpyrrolidonium trifluoroacetate [HNMP] + [CF 3 COO] − ) leads to a significant volatility increase of the MeTFA relative to TFA. The pure MeTFA was recovered from the MeTFA‐TFA‐[HNMP] + [CF 3 COO] − mixture in the quantity of 70% from the MeTFA initial mole charge; the total mole recovery was 100%. A significant result of the above experiment is that TFA mole recovery from the MeTFA‐TFA‐[HNMP] + [CF 3 COO] − mixture within a temperature range of T 〈 187°C exceeds 96%. The distillation of TFA and NMP mixture at T ≤ 230°C demonstrates strong binding of TFA anion that can be seen from the final liquid phase composition TFA/NMP ≈ 0.53/0.47. At the concentration and the temperature ranges under study, there is no NMP in the vapour phase.
Type of Medium:
Online Resource
ISSN:
0008-4034
,
1939-019X
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
240250-6
detail.hit.zdb_id:
2119520-1
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