Nitrogen doping carbon deriving from ionic liquid anchoring Ru coated on P-zeolite as high activity and stability catalyst for the catalytic wet air oxidation of highly concentrated ammonia

被引：11

作者：

Gai, Chaojie ^{[1
]}

Song, Hongbing ^{[1
]}

Liu, Xiaofeng ^{[1
]}

Li, Fukun ^{[2
]}

Xiao, Meng ^{[1
]}

Huang, Tingting ^{[1
]}

Gai, Hengjun ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem Engn, Zhengzhou Rd 53, Qingdao, Peoples R China

[2] Chongqing Technol & Business Univ, Coll Environm & Resources, Chongqing Key Lab Catalysis & New Environm Mat, Chongqing 400067, Peoples R China

来源：

MOLECULAR CATALYSIS | 2021年 / 515卷

基金：

中国国家自然科学基金;

关键词：

N-doped carbon; Ionic liquid; Zeolite; Catalytic wet air oxidation; Highly concentrated ammonia; WASTE-WATER; BREAKPOINT CHLORINATION; SIMULTANEOUS REMOVAL; AQUEOUS AMMONIA; PERFORMANCE; OPTIMIZATION; RECOVERY; OXIDES; CU; ABSORPTION;

D O I：

10.1016/j.mcat.2021.111941

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The treatment of the highly concentrated ammonia-nitrogen wastewater major produced in the coal chemical industry is a challenging problem. Herein, a novel catalyst with high activity and hydrothermal stability was designed for the catalytic wet air oxidation (CWAO) of the highly concentrated ammonia. In the designed catalytic system, P-zeolite was treated with sodium hydroxide to form defects for enhancing the adsorption of active metals. And the ionic liquid was employed as an N-doped carbon coating on treated P-zeolite to protect the ruthenium nanoparticles from leaching and improve its hydrothermal stability. The simultaneous introduction of ionic liquid and Ru precursor was beneficial to the dispersion of Ru on P-zeolite. The resulting catalyst Ru/Pzeolite(NaOH)@NC overcomes the poor hydrothermal stability of zeolite and exhibits excellent catalytic performance during the CWAO of highly concentrated ammonia. The catalyst of 1%Ru/P-zeolite(NaOH)@NC offers 100% conversion under 2 MPa at 200 degrees C in 4 h for 2000 ppm ammonia. No substantial deactivation was observed after five cycles. This study provides an effective strategy for the application of N-doped carbon coating on zeolite in CWAO systems.

引用

页数：12

共 63 条

[61]

Yu J, 2021, GREEN ENERGY ENVIRON, V1, DOI [10.1016/j.gee.2021.03.006, DOI 10.1016/J.GEE.2021.03.006]

[62]

Yx A., 2021, GREEN ENERGY ENVIRON, DOI [10.1016/j.gee.2020.12.024, DOI 10.1016/J.GEE.2020.12.024]

[63] Synthesis of manganese oxides for adsorptive removal of ammonia nitrogen from aqueous solutions [J].

Zhang, Lei ;

Wang, Junli ;

Qiao, Hongxia ;

Liu, Fuxing ;

Fu, Zishi .

JOURNAL OF CLEANER PRODUCTION, 2020, 272 (272)

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