Effect of Boron Nitride Support on Catalytic Activity of Ru-Ba/BN for Ammonia Synthesis

被引：7

作者：

Xu Chunfeng ^{[1
]}

Ouyang Liang ^{[1
]}

Zhang Jia ^{[1
]}

Zhou Bin ^{[1
]}

Li Ying ^{[1
]}

Liu Huazhang ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Inst Ind Catalysis, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310032, Zhejiang, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2010年 / 31卷 / 06期

关键词：

temperature-programmed nitridation; temperature-programmed reduction; ruthenium; barium; boron nitrite; supported catalyst; ammonia synthesis; RUTHENIUM CATALYSTS; ACTIVATED CARBON; PERFORMANCE; DISPERSION; PROMOTER; RU/AC;

D O I：

10.3724/SP.J.1088.2010.91143

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Boron nitride (BN) nanoparticles with high surface area were prepared by temperature-programmed nitridation and temperature-programmed reduction methods. The catalytic activity of the Ru-Ba/BN ammonia synthesis catalyst was studied. Characterizations by X-ray diffraction, N(2) adsorption-desorption, scanning electron microscopy, and Fourier transform infrared spectroscopy were performed to study the crystalline structure, pore structure, and surface properties of the BN material. The characterization results showed that using the above two methods can prepare hexagonal boron nitride with higher surface area, being 103 and 138 m(2)/g, respectively. The outlet ammonia concentration reached 7.3% under the conditions of 475 degrees C, 10 MPa, and 10 000 h(-1) for the Ru-Ba/BN catalyst, and the activity was stable after thermal treatment at 550 degrees C for 30 h.

引用

页码：677 / 682

页数：6