am8b05411_si_001.pdf (3.61 MB)
Porous Graphene-Confined Fe–K as Highly Efficient Catalyst for CO2 Direct Hydrogenation to Light Olefins
journal contribution
posted on 2018-06-29, 00:00 authored by Tijun Wu, Jun Lin, Yi Cheng, Jing Tian, Shunwu Wang, Songhai Xie, Yan Pei, Shirun Yan, Minghua Qiao, Hualong Xu, Baoning ZongWe
devised iron-based catalysts with honeycomb-structured graphene
(HSG) as the support and potassium as the promoter for CO2 direct hydrogenation to light olefins (CO2–FTO).
Over the optimal FeK1.5/HSG catalyst, the iron time yield of light
olefins amounted to 73 μmolCO2 gFe–1 s–1 with high selectivity of 59%.
No obvious deactivation occurred within 120 h on stream. The excellent
catalytic performance is attributed to the confinement effect of the
porous HSG on the sintering of the active sites and the promotion
effect of potassium on the activation of inert CO2 and
the formation of iron carbide active for CO2–FTO.