The graphene-meso-macroporous SiO 2 supported Pt–Ni alloy nanocatalyst for preferential oxidation of CO in H 2 -rich gases

Hydrothermal synthesis of graphene-LaFeO3 composite supported with Cu-Co nanocatalyst for higher alcohol synthesis from syngas

“…The composites, often with hierarchical ordering, have been assembled using nano-or microscale templates, such as polymers [15], emulsions [16], silica [17,18], titania [19,20] and iron oxide [21]. In detail, Y. Liu et al [17,18] prepare meso-macroporous graphene-SiO 2 composites, showing an excellent catalytic activity, high selectivity and good stability in the CO oxidation in hydrogen rich gases. Zhou et al [22] reported that the graphene-wrapped Fe 3 O 4 anode material exhibit much better performance in the reversible capacity and the cyclic stability than those without graphene.…”

Graphene-supported metal/metal oxide nanohybrids: synthesis and applications in heterogeneous catalysis

“…50,163,164 Secondly, applications in other reactions and/or more harsh conditions are worth to be investigated. Thus, there is still a long but broad way ahead for their practical applications.…”

“…47 The Pd NPs were uniformly dispersed on the graphene sheets, and the size can be tuned from 1.6 to 2.6 nm by increasing the Pd loading. 50 Theoretical calculations and thermodynamic analyses revealed that the Pd NPs was stable on the surface of the graphene sheets with oxygen groups.…”

“…49 Furthermore, the enrichment of Pt 0 due to electron donation from graphene is proposed to contribute to the high activity in the case of meso-macroporous SiO 2 and graphene sheet composite-supported Pt-Ni NPs for the preferential oxidation of CO in H 2 -rich gases. 50…”

Effect of High Temperature on Swellable Organically Modified Silica (SOMS) and Its Application for Preferential CO Oxidation in H2 Rich Environment

“…Similar results were reported by Niu et al wherein the silica supported catalyst deactivated rapidly in comparison to a graphene silica composite supported catalyst in wet feed condition. [81] Thus, it can be said that the hydrophobicity of HSOMS-400 results in higher stability and hence, higher deactivation resistance to moisture in the feed. n the past, polymer nanofilms have been used to coat active sites to protect them from moisture during O o idation however the O conversion rapidly decreased in the presence of 2 O at low temperatures.…”