One-pot Encapsulation of Pt Nanoparticles into the Mesochannels of SBA-15 and their Catalytic Dehydrogenation of Methylcyclohexane

Abstract

Highly dispersed Pt nanoparticles have been confined in the mesochannels of SBA-15 silica by a simple ''one-pot'' co-assembly method. Metallic Pt can be encapsulated in the mesochannels by changing the amount of Pt ions in the starting materials. The catalytic performances of Pt-SBA-15 were evaluated for methylcyclohexane dehydrogenation. Compared with conventional supported Pt-SiO 2 catalysts, the Pt-SBA-15 catalysts show higher stability. TEM studies show that the confinement effect of ordered mesochannels of SBA-15 may restrict the further growth of Pt nanoparticles during the reaction.

Assembly of Pt nanoparticles on electrospun In2O3 nanofibers for H2S detection

“…The Pt 4f (Fig. 3c) peaks located at 71.3 and 74.6 eV, which are assigned to Pt 4f 7/2 and Pt 4f 5/2 in the zerovalent, proving the existence of Pt nanoparticles in the as-synthesized Pt/ In 2 O 3 nanofibers [26].…”

Sustainable Preparation of Supported Metal Nanoparticles and Their Applications in Catalysis

“…[154d] Supported metallic Pt nanoparticles were also very active and selective in the oxidation of CO, [160] alcohols, [161,162] alkenes [163] and other compounds [164] including the oxidation of vitamin precursors such as l-sorbose to 2-keto-l-gulonic acid, [152] and the dehydrogenation of methylcyclohexane. [165] Layered double hydroxide supported nanoplatinum catalysts were also reported to be good catalysts for the allylation of aldehydes, giving moderate to good yields of homoallylic alcohols. [166] 4.1.4.…”

Highly dispersed platinum nanoparticles on mesoporous materials

“…Selective catalytic reduction of nitric oxide was reported by Oh et al using Pt-loaded Al-SBA-15 [49]. Other highly dispersed nano particles and catalytically active modified SBA-15 materials are used for hydroisomerization of n-dodecane [50], carbon monoxide oxidation and conversion [51], dehydrogenation of methylcyclohexane [52], and ethyl acetate combustion [53], etc.…”