The hydrosilylation of carbon dioxide (CO 2 ) has become a useful strategy for selectively producing fine chemicals and alternative fuels sources. However, the development of heterogeneous catalysts that complete this chemical transformation with high catalytic efficiencies are rare. Herein, the synthesis and characterization of a benzobisthiazole-linked (BBT) Co(II)-porphyrinbased porous organic polymer (Co-BBT-POP) for hydrosilylative reduction of CO 2 to potassium formate and methanol is reported. Co-BBT-POP can reduce CO 2 to potassium formate in the presence of diphenylsilane (Ph 2 SiH 2 ) and KF with a turnover number (TON) of 1627.In the presence of tris(pentafluorophenyl)borane (B(C 6 F 5 ) 3 ) and Ph 2 SiH 2 , Co-BBT-POP can convert CO 2 to methanol with a TON of 4531. Co-BBT-POP exhibits great recyclability up to five cycles for both catalytic systems.

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