Cargando…

Enhancing the Dispersion of Cu-Ni Metals on the Graphene Aerogel Support for Use as a Catalyst in the Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol

[Image: see text] Graphene has attracted attention because of its interesting properties in catalyst applications including as a catalyst support; however, it is known that the graphene can be restacked, forming a graphite-like structure that leads to poor specific surface area. Hence, the high-poro...

Descripción completa

Detalles Bibliográficos
Autores principales: Deerattrakul, Varisara, Panitprasert, Apichaya, Puengampholsrisook, Pralachoak, Kongkachuichay, Paisan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7271380/
https://www.ncbi.nlm.nih.gov/pubmed/32548423
http://dx.doi.org/10.1021/acsomega.0c01143
Descripción
Sumario:[Image: see text] Graphene has attracted attention because of its interesting properties in catalyst applications including as a catalyst support; however, it is known that the graphene can be restacked, forming a graphite-like structure that leads to poor specific surface area. Hence, the high-porosity graphene aerogel was used as a Cu–Ni catalyst support to produce dimethyl carbonate (DMC) from carbon dioxide and methanol. In this work, we have introduced a new synthesis route, which can improve the dispersion of metal particles on the graphene aerogel support. Cu–Ni/graphene aerogel catalysts were synthesized by a two-step procedure: forming Cu–Ni/graphene aerogel catalysts via hydrothermal reduction and then Cu–Ni loading by incipient wetness impregnation. It is found that the catalyst prepared by the two-step procedure exhibits higher DMC yield (25%) and MeOH conversion (18.5%) than those of Cu–Ni loading only by an incipient wetness impregnation method. The results prove that this new synthesis route can improve the performance of Cu–Ni/graphene aerogel catalysts for DMC production.