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Mesoporous silica-supported Pt catalysts in enantioselective hydrogenation of ethyl pyruvate by Byeongju Song; Jeongmyeong Kim; Iljun Chung; Yongju Yun is a Materials Science article available to read on EtoBox.

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Catalytic properties of Pt catalysts supported on mesoporous silica (Pt/m-SiO 2 ) have been studied in enantioselective hydrogenation of ethyl pyruvate. The influences of pore structure of mesoporous silica (m-SiO 2 ), type of chiral modifier, and H 2 pressure on the catalytic performance have been investigated by using various m-SiO 2 supports and cinchona alkaloids and by varying H 2 pressure. The use of MCM-41, SBA-15, KIT-6, and MCF reveals that characteristic pore structure and size of m-SiO 2 supports significantly affect both activity and enantioselectivity. A facile diffusion of chiral modifier through large mesopores of MCF support enables Pt/MCF to exhibit excellent performance. A comparison of the efficiency of cinchona alkaloids-modified Pt catalysts shows that QN and QD lead to higher performance than CD and CN at ambient H 2 pressure. The influence of cinchona alkaloids on enantioselectivity noticeably depends on H 2 pressure. Cinchona alkaloid-modified Pt/m-SiO 2 exhibit superior enantioselectivity to the corresponding Pt/Al 2 O 3 under various H 2 pressures. These results imply that m-SiO 2 is a promising support and that fine control of pore structure can further i

Who reads Mesoporous silica-supported Pt catalysts in enantioselective hydrogenation of ethyl pyruvate?

Author

Byeongju Song; Jeongmyeong Kim; Iljun Chung; Yongju Yun

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)