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測量應用案例-20211107
閱讀：158 發(fā)布時間：2021-11-16文獻名： Enhanced recovery of acetophenone and 1phenylethanol from petrochemical effluent by highly porous starch-based hypercrosslinked polymers
作者： Liqin Zhoua, Kungang Chaia, Xingdong Yaob, Hongbing Jiac
aSchool of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, PR China
bKey Laboratory of Forest Chemistry & Engineering of Guangxi, Guangxi University for Nationalities, Nanning 530006, PR China
cFine Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China
摘要：It is highly desirable to design and fabricate porous bio-based adsorbent for efficient and selective recovery of acetophenone (AP) and 1-phenylethanol (PE) from the effluent of propylene oxide and styrene monomer co-production (PO/SM) process. Herein, using cassava starch as the starting material, starch-graft-styrene hypercrosslinked polymers (SSHCPs) were designed and synthesized facilely by starch-graft-styrene copolymerization and subsequent crosslinking via a Friedel-Crafts alkylation route. SSHCP-3 (knitted by 4,4′-bis-(chloromethyl)-1,1′-biphenyl) shows high BET surface area (818 m2·g−1), large pore volume, and high thermal stability, making it a highly efficient adsorbent for removal of aromatic pollutants from water. SSHCP-3 showed high uptake for AP (2.82 mmol·g−1) and selectivity (4.95) of AP over PE in binary-solute adsorption experiments. Spectral studies and theoretical calculation demonstrated that AP and PE uptake could occur at glucose units and benzene moiety via van der Waals interaction and π-π stacking interactions. SSHCP-3 also showed excellent adsorption efficiency of AP (93.6%) and PE (74.4%) in the wastewater discharged from PO/SM process. These results demonstrated that transforming styrene and starch to bio-based hypercrosslinked polymers provides an environmentally friendly and attractive strategy for recovery of AP and PE in practical application.
關鍵詞：Adsorptive recovery; Hyper-crosslinking; Petrochemical effluent; Starch-based bio-sorbent