TY - JOUR

T1 - Topological Transformation of Mg-Containing Layered Double Hydroxide Nanosheets for Efficient Photodriven CH4 Coupling

AU - Xu, Yanqi

AU - Sun, Xiaoliang

AU - Wang, Xian

AU - He, Lunhua

AU - Wharmby, Michael T.

AU - Hua, Xiao

AU - Zhao, Yufei

AU - Song, Yu-Fei

PY - 2021/9/15

Y1 - 2021/9/15

N2 - Direct conversion of methane (CH4) to fuels and other high value-added chemicals is an attractive technology in the chemical industry; however, practical challenges to sustainable processes remain. Herein, we report the preparation of a heterostructured Co-doped MgO-based catalyst through topological transformation of a MgCo-layered double hydroxide (LDH) calcination from 200 to 1100 °C. Remarkably, the catalyst can activate CH4 coupling to produce C2H6 with a selectivity of 41.60 % within 3 h under full-spectrum irradiation through calcination of LDH at 800 °C. Characterization studies and catalytic results suggest that the highly dispersed active sites and large interfaces amongst the Co-doped MgO-based catalysts enable surface activation of CH4 to methyl (CH3*), in turn promoting coupling of CH3* to C2H6. This study introduces a promising pathway for photodriven CH4 coupling to give high value-added chemicals by using layered double hydroxides as a precursor.

AB - Direct conversion of methane (CH4) to fuels and other high value-added chemicals is an attractive technology in the chemical industry; however, practical challenges to sustainable processes remain. Herein, we report the preparation of a heterostructured Co-doped MgO-based catalyst through topological transformation of a MgCo-layered double hydroxide (LDH) calcination from 200 to 1100 °C. Remarkably, the catalyst can activate CH4 coupling to produce C2H6 with a selectivity of 41.60 % within 3 h under full-spectrum irradiation through calcination of LDH at 800 °C. Characterization studies and catalytic results suggest that the highly dispersed active sites and large interfaces amongst the Co-doped MgO-based catalysts enable surface activation of CH4 to methyl (CH3*), in turn promoting coupling of CH3* to C2H6. This study introduces a promising pathway for photodriven CH4 coupling to give high value-added chemicals by using layered double hydroxides as a precursor.

KW - MgO-based catalysts

KW - layered double hydroxides

KW - topological transformation

KW - photodriven catalysis

KW - methane coupling reaction

U2 - 10.1002/chem.202101428

DO - 10.1002/chem.202101428

M3 - Journal article

VL - 27

SP - 13211

EP - 13220

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

SN - 0947-6539

IS - 52

ER -