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10 results on '"Su, Tiezhu"'

4. Green Synthesis of Robust Imine-Linked Two-Dimensional Covalent Organic Frameworks in Supercritical Carbon Dioxide

Author

Xue, Tianwei, primary, Syzgantseva, Olga A., additional, Peng, Li, additional, Syzgantseva, Maria A., additional, Li, Ruiqing, additional, Xu, Guangkuo, additional, Sun, Daniel T., additional, Qiu, Rongxing, additional, Liu, Chengbin, additional, Zhang, Shu, additional, Su, Tiezhu, additional, Su, Peifeng, additional, Yang, Shuliang, additional, Li, Jun, additional, and Han, Buxing, additional

Published
2022
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5. Efficient adsorption removal of anionic dyes by an imidazolium-based mesoporous poly(ionic liquid) including the continuous column adsorption-desorption process

Author

Lin, Ju, primary, Su, Tiezhu, additional, Chen, Jiawen, additional, Xue, Tianwei, additional, Yang, Shuliang, additional, Guo, Peiwen, additional, Lin, Hongying, additional, Wang, Hongtao, additional, Hong, Yanzhen, additional, Su, Yuzhong, additional, Peng, Li, additional, and Li, Jun, additional

Published
2021
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10. Tetra-n-heptyl ammonium tetrafluoroborate: Synthesis, phase equilibrium with CO2 and pressure swing absorption for carbon capture.

Author

Zhou, Yulan, Su, Tiezhu, Ma, Guifeng, Ibrahim, Abdul-Rauf, Hu, Xiaohui, Wang, Hongtao, and Li, Jun

Subjects
*TETRAFLUOROBORATES, *CHEMICAL synthesis, *PHASE equilibrium, *PRESSURE swing adsorption process, *CARBON sequestration
Abstract

Based on the analyses of the interaction energy with CO 2 , COSMO calculation and melting temperature, a quaternary ammonium salt, tetra- n -heptyl ammonium tetrafluoroborate ([thepAm][BF 4 ]), was synthesized using [thepAm][Br] and NaBF 4 as the raw materials. The as-synthesized [thepAm][BF 4 ] was characterized by FTIR and NMR. The solid–liquid–gas (SLG) phase equilibrium line of the [thepAm][BF 4 ]–CO 2 system was determined by high pressure differential scanning calorimeter, indicating it was more stable than [thepAm][Br] because of higher melting temperatures of [thepAm][BF 4 ] in pressurized CO 2 . The solubility data of CO 2 in [thepAm][BF 4 ] at 313.2, 323.2 and 333.2 K up to 15 MPa were measured by using the high-pressure quartz spring approach. The Peng-Robinson equation of state with the van der Waals-1 mixing rules was employed to calculate the solubility and SLG phase equilibrium data. Results showed high molar fractions of CO 2 in [thepAm][BF 4 ] at high pressures (e.g., molar fraction of 0.88 at 10.0 MPa and 313.2 K). A cyclic absorption–desorption procedure and a pressure swing absorption process were proposed and tested for CO 2 capture/separation from the H 2 , CO and CO 2 mixture by using [thepAm][BF 4 ] as the absorbent, verifying its selective capture of CO 2 over H 2 and CO. The study may open a new way for CO 2 capture. [ABSTRACT FROM AUTHOR]

Published
2017
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