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低负载量Ru-Cu催化剂的合成及其对氨催化湿式氧化的研究

作者:时间:2025-03-05点击数:



全文下载: 20250117.pdf


文章编号: 1672-6987(2025)01-0031-07 DOI: 10.16351/j.1672-6987.2025.01.004


丰丙萧1 刘晓峰2 杨东霖1 郝李宁1 盖恒军1 宋红兵1*1.青岛科技大学 化工学院,山东 青岛 266042;2.中国石油大学(华东) 化学化工学院,山东 青岛 266580)

摘要: 采用一锅法合成了Ru-Cu@ZrO2双金属催化剂用于氨的催化湿式氧化。Cu的引入有效改善了贵金属催化剂在氨催化湿式氧化中N2选择性差的问题。这些催化剂采用不同的技术进行表征,表明Ru、Cu团簇均匀分散在ZrO2表面。在反应条件为200 ℃、6 h、2 MPa O2时,Ru0.25Cu0.25@ZrO2催化剂能使氨氮达到100%的转化率和63.5%的N2选择性。Ru与Cu协同催化不仅能够保证较高的氨氮转化率,还在一定程度上提高了N2选择性。催化机理表明:在该催化体系中,NH无法与积累的NO发生反应生成N2,限制了N2选择性的进一步提升。


关键词: 一锅法; 低负载量; Ru-Cu催化剂; 催化湿式氧化; 氨氮废水


中图分类号: O 6        文献标志码: A


引用格式: 丰丙萧, 刘晓峰, 杨东霖, .低负载量Ru-Cu催化剂的合成及其对氨催化湿式氧化的研究[J].青岛科技大学学报(自然科学版), 2025, 46(1): -.


FENG Bingxiao,LIU Xiaofeng,YANG Donglin,et al.Synthesis of Ru-Cu catalyst with low loading and its application in catalytic wet air oxidation of ammonia[J].Journal of Qingdao University of Science and Technology(Natural Science Edition), 2025, 46(1): -.

Synthesis of Ru-Cu Catalyst with Low Loading and Its Application in Catalytic Wet Air Oxidation of Ammonia

FENG Bingxiao1 LIU Xiaofeng2 YANG Donglin1 HAO Lining1 GAI Hengjun1SONGHongbing1

1.College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2.College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China)

Abstract: Ru-Cu@ZrO2 bimetallic catalysts were synthesized by a one-pot method for the catalytic wet air oxidation of ammonia. The introduction of Cu effectively ameliorates the poor selectivity of N2 in wet oxidation catalyzed by ammonia. These catalysts were characterized by different techniques, showing that Ru and Cu clusters were uniformly dispersed on the surface of ZrO2. Under the reaction conditions of 200 ℃, 6 h, and 2 MPa O2 the Ru0.25Cu0.25@ZrO2 catalyst can achieve 100% ammonia nitrogen conversion and 63.5% N2 selectivity. The synergistic catalysis of Ru and Cu can not only ensure a higher ammonia nitrogen conversion rate but also improve N2 selectivity to a certain extent. The catalytic mechanism shows that: in this catalytic system, NH cannot react with accumulated NO to produce N2 which limits the further improvement of nitrogen selectivity.


Key words: one pot method; low loading; Ru-Cu catalyst; catalytic wet air oxidation; ammonia nitrogen wastewater

收稿日期: 2024-01-25

基金项目: 国家自然科学基金项目(21878164).

作者简介: 丰丙萧(1997—),男,博士研究生.     * 通信联系人.


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