稀土改性催化剂催化分解甲硫醇的研究进展

发布时间：2018-01-31 14:08

本文关键词： 甲硫醇催化分解法催化剂酸碱性反应机制稀土　出处：《中国稀土学报》2017年05期 　论文类型：期刊论文

【摘要】：甲硫醇是一种特殊的有机物,其在空气中易转化形成有机气溶胶,导致大气光化学烟雾和雾霾等严重污染,所以甲硫醇的高效脱除研究工作目前已成为我国严控硫污染和实现硫以及VOCs(挥发性有机化合物)减排工作的新任务。简单综述了去除甲硫醇的基本方法和研究现状,重点介绍了目前关注度最高的方法——催化分解法,总结了催化剂体系的研究现状和进展,侧重于阐述催化剂酸碱性分解甲硫醇的影响及其相关的反应机制,选取了当前研究最新的催化剂H-ZSM-5、铈基催化剂、稀土Y,Sm,La,Gd,Sm,Nd改性的铈基催化剂和稀土改性的Ce/H-ZSM-5进行了介绍,同时简要总结了稀土在催化氧化降解有机硫化物方面的作用,以期为后续的相关研究提供可借鉴的思路。
[Abstract]:Methylmercaptan is a special organic matter, which is easily converted into organic aerosol in the air, resulting in serious pollution such as atmospheric photochemical smog and haze. Therefore, the study of high efficiency removal of methyl mercaptan has become a strict control of sulfur pollution and the realization of sulfur and VOCs (volatile organic compounds) in China. The basic methods and research status of methyl mercaptan removal are briefly reviewed. This paper mainly introduces the method of catalytic decomposition, which is the most concerned method at present, summarizes the research status and progress of catalyst system, and emphasizes on the influence of catalyst acid-base decomposition of methionol and its related reaction mechanism. The latest catalysts, H-ZSM-5, cerium based catalyst, rare earth YPS-Sm were selected. Nd-modified cerium based catalysts and rare earth modified Ce/H-ZSM-5 were introduced, and the role of rare earth in catalytic oxidation of organic sulfides was summarized. In order to provide a reference for the follow-up research.
【作者单位】：昆明理工大学环境科学与工程学院;
【基金】：国家自然科学基金项目(U1402233,21267011和21367015) 云南省省级基金项目(KKSY201422060) 云南省教育厅面上基金项目(KKJA201422018)资助
【分类号】：O643.36;X51
【正文快照】： 天然气和石油是工业和日常生活中的主要能源来源,它的主要成分是烷烃,此外还有少量有机硫等杂物。甲硫醇是有机硫的一种,具有强烈恶臭气味,其酸性低于H2S和CO2,且难溶于水。有机硫醇的来源主要分为两部分,一部分为自然源,如动植物残体分解、生物新陈代谢等;另一部分主要是人为

【相似文献】