Two-dimensional Molybdenum Carbide 2D-MoC As a Superior Catalyst for CO Hydrogenation

Overview

Journal Nat Commun

Specialty Biology

Date 2021 Sep 18

PMID 34535647

Citations 12

Authors

Hui Zhou

Zixuan Chen

Evgenia Kountoupi

Athanasia Tsoukalou

Paula M Abdala

Pierre Florian

Alexey Fedorov

Christoph R Muller

Affiliations

Soon will be listed here.

Abstract

Early transitional metal carbides are promising catalysts for hydrogenation of CO. Here, a two-dimensional (2D) multilayered 2D-MoC material is prepared from MoCT of the MXene family. Surface termination groups T (O, OH, and F) are reductively de-functionalized in MoCT (500 °C, pure H) avoiding the formation of a 3D carbide structure. CO hydrogenation studies show that the activity and product selectivity (CO, CH, C-C alkanes, methanol, and dimethyl ether) of MoCT and 2D-MoC are controlled by the surface coverage of T groups that are tunable by the H pretreatment conditions. 2D-MoC contains no T groups and outperforms MoCT, β-MoC, or the industrial Cu-ZnO-AlO catalyst in CO hydrogenation (evaluated by CO weight time yield at 430 °C and 1 bar). We show that the lack of surface termination groups drives the selectivity and activity of Mo-terminated carbidic surfaces in CO hydrogenation.

Citing Articles

Effect of the TiCT (T = O, OH, and H) Functionalization on the Formation of (TiO)/TiCT Composites.

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Contrasting Metallic (Rh) and Carbidic (2D-MoC MXene) Surfaces in Olefin Hydrogenation Provides Insights on the Origin of the Pairwise Hydrogen Addition.

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