化学
催化作用
炔丙基
吸附
纳米颗粒
卟啉
选择性
溶剂
化学工程
有机化学
工程类
作者
Yaju Chen,Lin Lei,Qinggang Ren,Jiashan Li,Jingkang Gao,Jie Lin,Yongjian Qiu,Hongbing Ji
标识
DOI:10.1002/ajoc.202200194
摘要
Abstract A nanotubular porous porphyrin‐based network (NT‐PPN) was prepared through Friedel–Crafts alkylation polyreaction of meso‐tetraphenylporphyrin iron chloride and subsequent demetalization reaction with concentrated hydrochloric acid. As a superior support, NT‐PPN was decorated with Ag nanoparticles to generate the desired catalyst (Ag@NT‐PPN). Ag@NT‐PPN had a high BET surface area with plentiful hierarchical porosity, considerable CO 2 adsorption uptake, as well as high CO 2 /N 2 adsorption selectivity. In the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU), Ag@NT‐PPN exhibited excellent catalytic performance for the solvent‐free synthesis of α‐alkylidene cyclic carbonates from propargyl alcohols and CO 2 at 30 °C. Ag@NT‐PPN also displayed robust constancy, excellent recyclability, and acceptable substrate expansibility for this reaction. Moreover, low concentration of CO 2 derived from mixed gas (15% CO 2 +85% N 2 in volume) was positively amenable to this catalytic protocol. This work might offer an opportunity to design metal NPs‐based heterogeneous catalysts and provide a promising candidate for application in the transformation of CO 2 into valuable cyclic carbonates.
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