TY - JOUR
T1 - Anaerobic conversion of methane to acetonitrile over solid-state-pyrolysis-synthesized GaN catalysts
AU - Trangwachirachai, Korawich
AU - Chen, Chin Han
AU - Lin, Yu Chuan
N1 - Funding Information:
This study was supported by the Ministry of Science and Technology (Projects 109–2628-E-006–011-MY3, 110–2221-E-006–165-MY3, 110–2923-E-006–005-MY3, and 110–2927-I-006–506) and by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU). The authors also appreciate the use of an elemental analyzer (EA000600, MOST 110–2731-M-006–001) and an electron spectroscopy for chemical analysis (ESCA000200, MOST 110–2731-M-006–001) belonging to the Core Facility Center of National Cheng Kung University. Drs. Jyh-Fu Lee and Chi-Liang Chen (National Synchrotron Radiation Research Center, Taiwan) are gratefully appreciated for the XAFS spectra collection.
Funding Information:
This study was supported by the Ministry of Science and Technology (Projects 109–2628-E-006–011-MY3, 110–2221-E-006–165-MY3, 110–2923-E-006–005-MY3, and 110–2927-I-006–506) and by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU). The authors also appreciate the use of an elemental analyzer (EA000600, MOST 110–2731-M-006–001) and an electron spectroscopy for chemical analysis (ESCA000200, MOST 110–2731-M-006–001) belonging to the Core Facility Center of National Cheng Kung University. Drs. Jyh-Fu Lee and Chi-Liang Chen (National Synchrotron Radiation Research Center, Taiwan) are gratefully appreciated for the XAFS spectra collection.
Publisher Copyright:
© 2021
PY - 2021/11
Y1 - 2021/11
N2 - The anaerobic conversion of methane to acetonitrile (AcCN) using GaN catalysts synthesized through the solid-state pyrolysis of gallium nitrate hydrate and melamine was investigated. A series of GaN catalysts (unsupported GaN, 50 wt% GaN/SiO2, and 5 wt% GaN/SiO2) were prepared, and their physicochemical properties were analyzed. The as-synthesized GaN catalysts had higher porosities, lower crystallinities, and better activities than those of the commercial GaN. Among tested catalysts, 5 wt% GaN/SiO2 displayed the highest methane conversion rate and AcCN productivity at 700 °C. Residual carbonaceous and nitrogen species, such as sp2-N (N = C) and cyano-N (N[tbnd]C), are likely to participate in the transformation of methane to AcCN. The activity of post-reaction 5 wt% GaN/SiO2 could be partially rejuvenated by a calcination-nitridation-activation process.
AB - The anaerobic conversion of methane to acetonitrile (AcCN) using GaN catalysts synthesized through the solid-state pyrolysis of gallium nitrate hydrate and melamine was investigated. A series of GaN catalysts (unsupported GaN, 50 wt% GaN/SiO2, and 5 wt% GaN/SiO2) were prepared, and their physicochemical properties were analyzed. The as-synthesized GaN catalysts had higher porosities, lower crystallinities, and better activities than those of the commercial GaN. Among tested catalysts, 5 wt% GaN/SiO2 displayed the highest methane conversion rate and AcCN productivity at 700 °C. Residual carbonaceous and nitrogen species, such as sp2-N (N = C) and cyano-N (N[tbnd]C), are likely to participate in the transformation of methane to AcCN. The activity of post-reaction 5 wt% GaN/SiO2 could be partially rejuvenated by a calcination-nitridation-activation process.
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U2 - 10.1016/j.mcat.2021.111961
DO - 10.1016/j.mcat.2021.111961
M3 - Article
AN - SCOPUS:85117938489
SN - 2468-8231
VL - 516
JO - Molecular Catalysis
JF - Molecular Catalysis
M1 - 111961
ER -