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Multilayered Two‐Dimensional V 2 CT x MXene for Methane Dehydroaromatization
Author(s) -
Thakur Raj,
Hoffman Megan,
VahidMohammadi Armin,
Smith Justin,
Chi Mingyang,
Tatarchuk Bruce,
Beidaghi Majid,
Carrero Carlos A.
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201902366
Subject(s) - x ray photoelectron spectroscopy , raman spectroscopy , vanadium carbide , catalysis , materials science , desorption , scanning electron microscope , methane , benzene , vanadium , yield (engineering) , analytical chemistry (journal) , chemistry , chemical engineering , inorganic chemistry , adsorption , organic chemistry , composite material , engineering , physics , optics
We report a thermally stable multilayered two‐dimensional vanadium carbide (V 2 CT x ) MXenes catalyst for the direct conversion of methane (CH 4 ) into benzene (C 6 H 6 ). The multilayered carbide structure shows state‐of‐the‐art CH 4 conversion 11.8 % with a C 6 H 6 formation rate of 1.9 mmol g cat −1 h −1 (4.84 % C 6 H 6 yield) at 700 °C, which is comparable to the benchmark Mo/ZSM‐5 catalyst. The structure‐activity relationship was explored by numerous characterization techniques including in‐situ/operando Raman‐MS, ex‐situ X‐ray diffraction (XRD), scanning electron microscopy (SEM), X‐ray photoelectron spectroscopy (XPS), and ammonia temperature programmed desorption (NH 3 ‐TPD). This work provides a new platform to design and explore multilayered two‐dimensional catalysts demonstrating confinement effect to convert CH 4 into *C 2 H 3 intermediates which further oligomerize inside multilayered structures producing C 6 H 6 as the final product.