乙对SmMn2O5的催化氧化:酸蚀刻和加载处理的影响
Kai Zhang1, Wenhuan Wang1,2,3,4, Honglei Ding1,2,3,4
1College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China.
Inorganic chemistry
|June 14, 2023
概括
一种新型的酸蚀刻SmMn2O5支架增强了乙的催化氧化. 这种由Ag和CeO2纳米粒子组成的复合催化剂在低温下表现出卓越的活性和稳定性,可降解乙.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 环境化学环境化学
背景情况:
- 开发稳定,高活性催化剂对于有效的催化氧化至关重要.
- 在低温下实现高酸盐转化仍然是一个重大挑战.
研究的目的:
- 准备和描述一种用于乙降解的新型复合催化剂.
- 研究影响乙分解的催化活性和机制的因素.
主要方法:
- 合成一种复合催化剂,使用酸蚀刻的SmMn2O5作为支,并加载Ag和CeO2纳米粒子.
- 使用SEM,TEM,XRD,N2-BET,XPS,EPR,H2-TPR,O2-TPD,NH3-TPD和DRIFT进行全面的表征.
- 在不同温度下对乙降解的催化活性的评估.
主要成果:
- CeO2-SmMn2O5-H催化剂表现出最佳的活动,T50在123°C和T100在185°C.
- 催化剂表现出极好的稳定性和耐水和热应力.
- 酸蚀刻在SmMn2O5上造成了表面/晶格缺陷,优化了纳米粒子分散和协同效应.
结论:
- 酸蚀刻的SmMn2O5为Ag和CeO2纳米粒子提供了有效的支持,增强了乙的降解.
- Ag,CeO2和支物之间的协同作用促进了通过反应性氧物种和电子转移的乙分解.
- 开发了一种用于修改SmMn2O5支与贵金属和过渡金属氧化物的新方法,以有效地去除乙.
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