21121-22-2Relevant academic research and scientific papers
Solubility and Rheological Properties of the System NaClO3?CO(NH2)2–H2SO4?N(C2H4OH)3–H2O
Sidikov,Toghasharov,Shukurov,Tukhtaev
, p. 1554 - 1560 (2021/11/24)
Abstract: This work is devoted to the study of the interaction of components in the system NaClO3? CO(NH2)2–H2SO4?N(C2H4OH)3–H2O by visual-polythermal method. The solubility of the system has been studied in the temperature range from –33.0 to 70.0°C. Its polythermal solubility diagram has been constructed on which the crystallization fields of ice, carbamide, sodium monocarbamidochlorate, triethanolammonium sulfate, and a new compound of the composition triethylchlororatamine sodium sulfate are distinguished. The compound has been identified by chemical and physicochemical analyses. New data of physicochemical and rheological properties of the components of the system have been obtained (crystallization temperature, pH, density, viscosity, and refractive index), and a “composition-properties” diagram of the studied system has been constructed.
Cleaner enzymatic production of biodiesel with easy separation procedures triggered by a biocompatible hydrophilic ionic liquid
Chen, Qianhan,Cheng, Shuang,Fan, Dongshuang,Feng, Wanlu,Guo, Yuanyang,Li, Lingjun,Li, Zhiyong,Wang, Jianji,Zhu, Anlian
, p. 1944 - 1951 (2020/04/09)
The great challenges of modern industry and the environment make it important to develop sustainable energy resources with low cost. In this work, a cleaner enzymatic procedure for biodiesel production was developed through the utilization of a biocompatible and hydrophilic ionic liquid [Choline][H2PO4]. This ionic liquid can be synthesized from cheap raw materials through simple neutralization procedures, and it has been proved to be well biocompatible. The utilization of this ionic liquid in Novozym 435 catalyzed biodiesel production makes the reaction and work-up procedures very simple, because its hydrophilicity can lead to the implementation of a pseudo homogeneous reaction and then heterogeneous separation. Various oil resources such as triolein, sunflower oil and castor oil can all be converted to biodiesels with high yields. After the completion of reaction, both the ionic liquid and Novozym 435 can be recycled and reutilized for at least five cycles without a significant activity decrease. In addition, this reaction system can be conveniently scaled up to the multi-gram level with high efficiency and feasible separation. Overall, the above mentioned benefits make this ionic liquid based enzymatic system cleaner for the production of biodiesel and promising for further industrial applications.
