3 years ago

Nanoseeded Catalytic Terpolymerization of CO, Ethylene, and Propylene by Size-Controlled SiO2@Sulfonated Microporous Organic Polymer

Nanoseeded Catalytic Terpolymerization of CO, Ethylene, and Propylene by Size-Controlled SiO2@Sulfonated Microporous Organic Polymer
Yeon-Joo Cheong, Seung Uk Son, Bun Yeoul Lee, Hae Jin Kim, Yoon-Joo Ko, Hye-Young Jang, Yu Na Lim, Shin Young Kang, Sang Moon Lee
Nanoseeds with silica@sulfonated microporous organic polymer (SiO2@S-MOP) structure were prepared by the formation of MOP layers on the surface of SiO2 spheres and the successive sulfonation of the MOPs. Using the SiO2@S-MOPs as seed materials, catalytic terpolymerization of CO, ethylene, and propylene was studied. The designed SiO2@S-MOP nanoseeds not only activated catalyst precursors but also controlled the catalytic formation of polyketones. While the homogeneous system showed a severe reactor fouling and a wide molecular weight distribution of terpolymer, the SiO2-190@S-MOP system resulted in the narrow molecular weight distribution of terpolymers without a reactor fouling. The size of nanoseeds was critical to obtaining the granular terpolymers. Moreover, the SiO2-190@S-MOP system showed a good activity of 17.2 kg of polymer/g of Pd, comparable to the homogeneous system with 19.6 kg of polymer/g of Pd. We believe that more various nanoseeded catalytic polymerizations can be developed using new nanoseed materials adopting the MOP chemistry.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b02509

DOI: 10.1021/acs.iecr.7b02509

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