Enhanced recovery of acetophenone and 1‐phenylethanol from petrochemical effluent by highly porous starch-based hypercrosslinked polymers
Enhanced recovery of acetophenone and 1‐phenylethanol from petrochemical effluent by highly porous starch-based hypercrosslinked polymers
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高多孔淀粉基超交联聚合物提高石化废水中苯乙酮和 1-苯乙醇的回收率
DOI：
10.1016/j.cej.2021.129351
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发表时间：
2021-03
影响因子：
15.1
通讯作者：
Hongbing Ji
中科院分区：
文献类型：
--
作者：
Zhou Liqin;Kungang Chai;Xingdong Yao;Hongbing Ji
·容易地合成了高度多孔的淀粉基超交联聚合物。·SHCP-3对AP和PE的显著高吸附容量优于大多数已报道的吸附剂。· SSHCP-3在从PO/SM废水中高效回收AP和PE方面表现出实用性。·物理吸附过程主要由几种非共价相互作用驱动（例如，π-π堆积，氢键）。设计并制备多孔生物基吸附剂，用于从环氧丙烷和苯乙烯单体联产（PO/SM）工艺的流出物中高效、选择性地回收苯乙酮（AP）和1-苯基乙醇（PE），是非常有必要的。本文以木薯淀粉为原料，通过淀粉接枝苯乙烯共聚和Friedel-Crafts烷基化交联反应，设计合成了淀粉接枝苯乙烯超交联聚合物（SSHCPs）。SHCP-3（由4，4 ′-双（氯甲基）-1，1 ′-联苯编织而成）具有高BET表面积（818 m2·g −1）、大孔容和高热稳定性，是去除水中芳香族污染物的高效吸附剂。SHCP-3在二元溶质吸附实验中表现出对AP（2.82 mmol·g −1）的高吸收和对AP的选择性（4.95）。光谱研究和理论计算表明，AP和PE的吸收可以通过货车范德华力和π-π堆积作用发生在葡萄糖单元和苯单元上。SHCP-3对PO/SM工艺废水中AP和PE的吸附率分别为93.6%和74.4%。这些结果表明，将苯乙烯和淀粉转化为生物基超交联聚合物为实际应用中的AP和PE回收提供了环境友好且有吸引力的策略。
• Highly porous starch-based hypercrosslinked polymers were facilely synthesized. • The remarkable high adsorption capacity of SSHCP-3 to AP and PE outperformed most of the reported adsorbents. • SSHCP-3 showed practicability in efficient recovery of AP and PE from PO/SM effluent. • The physisorption process was mainly driven by several non-covalent interactions (e.g., π-π stacking, hydrogen bond). 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 m 2 ·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.
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影响因子：
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