Hydrogenation of Toluene to Methyl Cyclohexane over PtRh Bimetallic Nanoparticle-Encaged Hollow Mesoporous Silica Catalytic Nanoreactors.

ABSTRACT: PtRh bimetallic nanoparticle (NP)-encaged hollow mesoporous silica nanoreactors (PtRh@HMSNs) are prepared by employing metal-ion-containing charge-driven polymer micelles as templates. These nanoreactors feature ∼1-2 nm PtRh NPs in ∼11 nm hollow cavities of HMSNs. Among various Pt _x Rh _y @HMSNs, Pt_0.77Rh₁@HMSNs show the best catalytic performance for toluene hydrogenation. Under 30 °C, atmospheric H₂ pressure, and a toluene/(Pt+Rh) molar ratio of 200/1, Pt_0.77Rh₁@HMSNs reach 100.0% of methyl cyclohexane yield and demonstrate a much better catalytic performance than monometallic Pt@HMSNs and Rh@HMSNs and their physical mixtures. Moreover, Pt_0.77Rh₁@HMSNs exhibit a good catalytic

SUBMITTER: Li K 

PROVIDER: S-EPMC7931421 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature