AlFe层柱粘土催化剂催化甲苯在水中的降解

来源 :催化学报 | 被引量 : 0次 | 上传用户:woxiangtoucai
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The catalytic wet peroxide oxidation (CWPO) of toluene on two bentonite-based AlFe-pillared clays (PILCs) with different iron contents was investigated. The PILCs were obtained using bentonite clay from Bogovina, Serbia. The change in chemical and phase composition and textural properties of the starting clay and synthesized catalysts was monitored using X-ray diffraction, inductively coupled plasma optical emission spectrometry, UV-Vis diffuse reflectance spectrometry, and physisorption of nitrogen. The catalytic performance was examined using gas chromatography. The Na-exchange process lowered the (001) smectite basal plane spacing, but the clay retained its swelling properties, while the pillaring process increased it. The surface areas of both synthesized pillared clays increased to similar values although their Fe content was different. At 37 ℃, both catalysts show significant toluene degradation, with the one richer in Fe having higher efficiency. The leaching of the active cations during reaction was negligible, and the catalysts were stable. AlFe-pillared clay catalysts can be used in CWPO for the elimination of BTEX compounds from plant effluent streams.
其他文献
针对课堂小组合作过程中出现的诸多低效问题,如活动不充分、合作内涵低、学生缺乏参与热情、评价不客观等现象,笔者进行了为期一学年的提高小组合作学习实效性的行动研究.笔
本文针对高中学生英语写作中的常见问题,从篇章结构和语言知识两个角度,结合教学实例探讨了作文讲评对学生英语写作能力的促进作用.
本文探讨了从语篇的视角组织高三英语词汇复习的策略,并结合案例阐述了利用高考真题的语篇和报刊中的美文复习目标词汇的方法,阐明了基于优秀语篇的词汇多样性复习对于提高学
目前电流体动力(EHD)等离子体发生器的能量转化效率还远不能满足实际应用的要求.等离子体发生器的性能优化因此成为研究中的核心问题.针对目前基于泊松方程解的仿真方法耗费
医院中子照射器是专用于硼中子俘获治疗的核装置,所用反应堆功率为30 kW,采用~(235)U富集度为12.5%的UO_2为燃料,金属铍反射层,轻水为慢化剂和冷却剂.堆芯产生的热量靠自然循
低渗透油藏非达西渗流时,地层的压力分布与常规达西流动情况下不同,储层存在压力波及不到的区域,难以有效动用.为此,基于渗流理论中质量守恒和动量守恒方程,建立了考虑启动压
为了描述短纤维复合材料注射充模过程的介观结构生成、演化规律,借鉴硬棒模型和粒子模型,建立了一种修正的耗散粒子动力学模型,采用修正的Verlet算法对剪切场作用下短纤维复
用改进的谱域法分析微带线的电流分布特性,并用切比雪夫多项式做基函数来表示切向电流分布,得到了较宽频率范围内的切向电流分布特性,再根据这些特性在不同频段上取适当数量
提出一种应用原子分解实现的电能质量扰动信号特征提取方法.该方法以Gabor原子库和匹配追踪算法为基础,从扰动信号中迭代求取Gabor原子成分,再将Gabor原子转化为衰减正弦量原