期刊
MATERIALS TODAY CHEMISTRY
卷 30, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mtchem.2023.101500
关键词
Acetonitrile; Ammonia; Gallium; Nitrogen; Reduction
The reduction of GaN using different carriers was investigated and tested for methane conversion to acetonitrile. The highest ammonia and ACN productivities were obtained using 5 wt% GaN on HZ. The N-Ga interaction was weakened due to the presence of a neighboring Bronsted acid, and rejuvenation of activity could be achieved through a renitridation step. The (001) side surface of GaN was found to be important in the conversion of methane to ACN.
The reduction of supported GaN using amorphous SiO2, silicalite-1 (S1), and HZSM-5 (HZ) as the carriers was investigated and tested for methane conversion to acetonitrile (ACN). Ammonia nitridation was used to synthesize GaN samples. The highest ammonia and ACN productivities (433 and 383 mmol/g, respectively) were obtained by using 5 wt% GaN on HZ (5GaN/HZ). The N-Ga interaction of 5GaN/HZ was discovered to be weakened due to the presence of a neighboring Bronsted acid. The oxidation state of gallium was reduced during methane conversion, implying the loss of nitrogen from GaN. The decreased activity could be rejuvenated by a renitridation step. The GaN surface structures, including the adsorption surface, (110), and the side surfaces, (001), (110), (111), and (111), were calculated via first-principles calculations. Among them, the (001) side surface of GaN was likely to be the origin of mobile nitrogen, which is important in the conversion of methane to ACN.(c) 2023 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据