Novel nickel-immobilized-SiO₂-TiO₂ fine particles in the presence of cetyltrimethylammonium bromide as a catalyst for ultrasound-assisted-Kumada cross-coupling reaction.

ABSTRACT: Kumada cross-coupling reaction is useful for producing biphenyls, where nickel and copper have been widely investigated as catalysts but mainly homogeneous ones. In this study, we investigated ultrasound-assisted-Kumada cross-coupling reaction over the heterogeneous catalysts in which Ni²⁺, Cu²⁺, or both was immobilized on aminopropylsilane-functionalized-SiO₂-TiO₂ prepared in the presence of cetyltrimethylammonium bromide (CTAB). The presence of CTAB effectively prevented the particle growth and therefore SiO₂-TiO₂ fine particles with high surface area (502 m² g^-1) were formed. The Ni²⁺-immobilized catalyst showed high catalytic activity for the ultrasound-assisted-Kumada cross-coupling reac

SUBMITTER: Agustiningsih D 

PROVIDER: S-EPMC11315103 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature