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Process of separating acetonitrile and water using LTTMs as entrainer

Li Chengshuai, Ma Wencheng

Polish Journal of Chemical Technology

2021

Vol. 23, nr 4

1--9

New extractive distillation confi gurations, which use low transition temperature mixtures (LTTMs) as entrainers, have attracted widespread attention among scholars due to their green processes. Furthermore, the design and comparison of different processes can promote the application of new solvents in the future. In this study, two extractive distillation processes, the extractive distillation column (ED) and the extraction dividing wall column (EDW), were selected from previous work. The separation process of acetonitrile (ACN)-water ternary mixtures was studied, and GC3:1(choline chloride/glycolic acid mixture (molar mass 1:3)) and EC2:1((choline chloride/ethylene glycol 1:2 molar mass) were used as entrainers. Minimum consumption energy and the purity of ACN and water were set as the goals, and our sensitivity analysis and economic evaluation results showed that both ED and EDW were effective. As a result, LTTMs can be used in extractive distillation for azeotrope separation.

Chemistry of 2-aryl-1-cyano-1-nitroethenes. Part II. Chemical transformations

Woliński P., Kącka-Zych A.

Technical Transactions

2018

Vol. 115, iss. 2

123--139

This work is a continuation of our study on the chemistry of 2-aryl-1-cyano-1-nitroethenes. In this paper, we describe the reactivity of 2-aryl-1-cyano-1-nitroethenes as a key component in [2+3] and [2+4] cycloaddition reactions, and in other transformations.

Praca stanowi kontynuację studiów dotyczących chemii 2-arylo-1-cyjano-1-nitroetenów. W jej ramach dokonaliśmy przeglądu transformacji 2-arylo-1-cyjano-1-nitroetenów jako komponentów [2+3], [2+4] cykloaddycji oraz w innych reakcjach.

Chemistry of 2-aryl-1-cyano-1-nitroethenes. Part I. Synthesis and physical properties

Woliński P., Jasiński R.

Technical Transactions

2018

Vol. 115, iss. 2

109--122

In this paper, we present the methodology of preparation of 2-aryl-1-cyano-1-nitroethenes and the synthesis of their main precursor – nitroacetonitrile. We have also gathered the physical properties of all compounds of this group known in the literature.

W niniejszej pracy przedstawiliśmy metodologię otrzymywania 2-arylo-1-cyjano-1-nitroetenów oraz ich głównego prekursora, jakim jest nitroacetonitryl. Przedstawiliśmy również właściwości fizyczne wszystkich znanych w literaturze związków ze wspomnianej grupy.