文献类型：期刊文献

英文题名：Hydrogenation of Toluene to Methyl Cyclohexane over PtRh Bimetallic Nanoparticle-Encaged Hollow Mesoporous Silica Catalytic Nanoreactors

作者：Li, Kaijie[1];An, Heliang[1];Yan, Peijian[1];Yang, Caoping[1];Xiao, Tao[1];Wang, Junyou[1];Zhou, Shenghu[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：6

期号：8

起止页码：5846

外文期刊名：ACS OMEGA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000626269800076)】；

基金：S.Z. thanks the National Natural Science Foundation of China for financial support (Grant Nos. 22078099 and 21776090), and this work is also partially supported by the Natural Science Foundation of Shanghai (Grant No. 17ZR1440500)

语种：英文

摘要：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 similar to 1-2 nm PtRh NPs in , similar to 11 nm hollow cavities of FIMSNs. Among various PtxRhy@HMSNs, Pt0.77Rh1@HMSNs show the best catalytic performance for toluene hydrogenation. Under 30 degrees C, atmospheric H-2 pressure, and a toluene/(Pt+Rh) molar ratio of 200/1, Pt0.77Rh1@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, Pt0.77Rh1@HMSNs exhibit a good catalytic stability during recycling experiments. The enhanced performance of Pt0.77Rh1@HMSNs is ascribed to the interaction between Pt and Rh, the beneficial effect of the relatively large mesoporous channels for mass transfer, as well as the confinement effect of functional NPs inside hollow cavities.