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564 results on '"Chen, Yanguang"'

161. Chemical looping conversion of methane via Fe2O3-LaFeO3calcined from LaFe-MOF precursor

Author

Deng, Jitong, Zhang, Yongjun, Wang, Xiaopeng, Zhang, Wei, Han, Hongjing, Wang, Haiying, Yuan, Huimin, Zhang, Yanan, and Chen, Yanguang

Abstract

The composite oxides of Fe2O3-LaFeO3provide sufficient lattice oxygen for the chemical looping conversion of methane, which is beneficial to the generation of CO2with the concentration greater than 99% by regulation of lattice oxygen conversion.

Published
2023
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186. Effect of P on hydrodeoxygenation performance of Ni–P/SiO2 catalysts for upgrading of m-cresol.

Author

Wang, Jing, Zhang, Mei, Li, Feng, Wang, Huan, Chen, Yanguang, and Song, Hua

Subjects
NICKEL phosphide, CATALYSTS, GROUP formation, CATALYSIS, ACIDITY, PERFORMANCE theory
Abstract

To deeply understand the role of P in hydrodeoxygenation (HDO), SiO2-supported Ni and Ni–P catalysts with different P/Ni ratios (x) were prepared. The as-prepared samples were characterized by various characterization methods. The HDO activity and product distribution over the Ni/SiO2 and N–P/SiO2-x were compared and the effects of x on the structure, acidity, formation mechanism of active phases and HDO performance were studied taking m-cresol HDO as a model reaction. The results showed that the introduction of P promotes the formation of smaller active sites and contributes to the creation of weak and medium strength acid sites through the formation of P–OH groups and Niδ+ in Ni2P. HDO over the Ni/SiO2 catalyst occurs mainly via the hydrogenation (HYD) route with 3-methyl-cyclohexanol (3-MCHnol) as the main product. However, for Ni–P/SiO2-x catalysts, methyl-cyclohexane (MCH) selectivity increases first and then decreases with the increase of x, reaching a maximum of 95% at x = 1. The acidity generated by the introduction of P contributes to increased MCH selectivity, while the dehydration of 3-MCHnol to MCH occurs mainly on acid sites. However, the excessively high P content (x ≥ 2.0) leads to a significant increase of MB (toluene) selectivity, which is associated with the increase in Ni(I) sites. About 100% m-cresol conversion was achieved with Ni–P/SiO2-1.0 when the m-cresol (g)/catalyst (g) ratio was 3, with MCH (99.4%) as the major product, showing great promise for deep HDO catalysis. [ABSTRACT FROM AUTHOR]

Published
2022
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187. 京津冀城镇用地空间结构的多分维谱分析

Author

HUANG Linshan, null 黄琳珊, null 陈彦光, null 李双成, CHEN Yanguang, and LI Shuangcheng

Subjects
Ecology, Geography, Planning and Development, Earth and Planetary Sciences (miscellaneous), Nature and Landscape Conservation
Published
2019

189. 京津冀城市用地形态的双分形特征及其演化

Author

ZHAO Jingtian, null 赵静湉, null 陈彦光, null 李双成, CHEN Yanguang, and LI Shuangcheng

Subjects
Ecology, Geography, Planning and Development, Earth and Planetary Sciences (miscellaneous), Nature and Landscape Conservation
Published
2019

191. 京津冀城市生长和形态的径向维数分析

Author

ZHANG Feng, null 张凤, null 陈彦光, null 李晓松, CHEN Yanguang, and LI Xiaosong

Subjects
Ecology, Geography, Planning and Development, Earth and Planetary Sciences (miscellaneous), Nature and Landscape Conservation
Published
2019

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