Co/H<em>β</em>催化剂上N<sub>2</sub>O的分解性能研究

徐向阳; 谷成; 王虹; 张远远; 柯琰; 张成乐; 王明锦; 宋宝华; 李翠清

Co/Hβ催化剂上N₂O的分解性能研究

1.
北京石油化工学院化学工程学院, 北京 102617;
2.
北京化工大学, 北京 100029;
3.
中节能六合天融环保科技有限公司, 北京 100085

基金项目: 国家自然科学基金（21342009）；北京市属高等学校人才强教计划（PHR20110517）；国家级大学生创新创业训练计划（201310017004）；北京市本科生科学研究计划（2013J00032）。

详细信息

通讯作者:
王虹，E-mail：wanghong@bipt.edu.cn；Tel：010-81292131，13611187763。宋宝华，E-mail：baohua.song@talroad.com.cn，Tel：010-61717301。

中图分类号: O643
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出版历程
- 收稿日期: 2014-01-27
- 修回日期: 2014-04-14
- 刊出日期: 2014-07-30

Catalytic performance of Co/Hβ in N₂O decomposition

1.
College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617;
2.
Beijing University of Chemical Technology, Beijing 100029, China;
3.
CECEP Liuhe Talroad Environmental Technology Co., Ltd, Beijing 100085, China

摘要

摘要: 采用浸渍法制备了Hβ分子筛负载钴氧化物催化剂。考察了催化剂焙烧温度和钴负载量对催化剂催化分解N₂O活性的影响，并采用XRD、NH₃-TPD、H₂-TPR、SEM等手段对催化剂的理化性质进行表征。结果表明，催化剂中的钴物种主要以Co₃O₄尖晶石型形态存在；催化剂焙烧温度显著影响其酸性和酸量及氧化还原性能，焙烧温度达到700℃后，催化剂中有难还原的Co-Al-O物种生成。焙烧温度和钴负载量对催化剂的催化活性均有影响，焙烧温度为600℃、钴负载量为10%~15%的催化剂催化活性好，N₂O分解温度低，t₁₀、t₅₀和t₉₅分别为325~329℃、364~367℃和406~408℃。
- N₂O /
- 催化分解 /
- 钴 /
- H&beta /
- 分子筛 /
- 焙烧温度
Abstract: The catalyst of cobalt oxide supported on Hβ zeolite (Co/Hβ) was prepared by impregnation method and characterized by XRD, H₂-TPR, NH₃-TPD, and SEM. The effects of calcination temperature and cobalt loading on the catalytic performance of Co/Hβ in N₂O decomposition were investigated. The results showed that cobalt species are present mainly in the form of Co₃O₄ spinel oxide. The acidity, acid amount and redox property of the Co/Hβ catalyst were significantly affected by the calcination temperature; the Co-Al-O species that is difficult to reduce by hydrogen is formed at a calcination temperature over 700℃. The catalytic activity of the Co/Hβ catalyst was affected by the calcintion temperature and cobalt loading. The Co/Hβ catalyst calcined at 600℃ and with a cobalt loading of 10%~15% exhibits excellent catalytic activity in N₂O decomposition; the temperatures t₁₀, t₅₀ and t₉₅ for N₂O decomposition are 325~329℃, 364~367℃, and 406~408℃, respectively.
- N₂O /
- catalytic decomposition /
- cobalt /
- H&beta /
- zeolite /
- calcination temperature

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