MTi-LDH(M=Zn,Ni)的制备及其对乙硫醇的吸附性能研究
A Study on Preparation of MTi-LDH(M=Zn,Ni)and Its Adsorption Performance for Ethyl Mercaptan
崔洪珊 1何杰 2王丽平 3徐从波 3张龙玉 4李紫妍4
作者信息
- 1. 淮南联合大学制药与材料学院,安徽淮南 232038;安徽理工大学地球与环境学院,安徽淮南 232001
- 2. 安徽理工大学地球与环境学院,安徽淮南 232001;安徽理工大学化学工程学院,安徽淮南 232001
- 3. 淮南联合大学制药与材料学院,安徽淮南 232038
- 4. 安徽理工大学地球与环境学院,安徽淮南 232001
- 折叠
摘要
TiO2是环境催化领域最常用、应用最广泛的催化剂之一,但其表面羟基常显酸性,限制了其在乙硫醇等酸性气体中的吸附性能.用Zn和Ni元素对其进行修饰,构建ZnTi-LDH、NiTi-LDH等钛基层状双金属氢氧化物,在对其结构特征进行表征的基础上,选择甲烷气中的乙硫醇为研究对象,研究二元的钛基层状双金属氢氧化物对甲烷气中乙硫醇的吸附作用,及层状化合物的层板和表面酸碱性等对乙硫醇吸附性能的影响.研究结果表明,采用固定床反应器动态吸附乙硫醇,发现ZnTi-LDH的穿透硫容为8.04 mg·g-1,而NiTi-LDH的吸附性能要优于ZnTi-LDH,其穿透硫容为13.79 mg·g-1.该催化剂优异的吸附脱硫活性使其在工业应用上具有一定的前景.
Abstract
TiO2 is one of the most commonly and widely used catalysts in the field of environmental catalysis.However,its surface hydroxyl groups often exhibit acidity,limiting its adsorption performance in acidic gases such as ethyl mercaptan.Ti-tanium-based bimetallic hydroxides such as ZnTi-LDH and NiTi-LDH are constructed through modification with the ele-ments Zn and Ni.On the basis of characterizing their structural characteristics,ethyl mercaptan in methane gas is selected as the research object.The adsorption performance of binary titanium-based bimetallic hydroxides on ethyl mercaptan in meth-ane gas is studied,and the influence of interlayer and surface acid-base properties of layered compounds on the adsorption performance of ethyl mercaptan is elucidated.The research results indicate that by using a fixed bed reactor for dynamic ad-sorption of ethyl mercaptan,the following conclusion can be drawn:the breakthrough sulfur capacity of ZnTi-LDH is 8.04 mg·g-1,while the adsorption performance of NiTi LDH is better than that of ZnTi-LDH,with a breakthrough sulfur capac-ity of 13.79 mg·g-1.The excellent adsorption desulfurization activity of this catalyst brings about certain prospect in its in-dustrial applications.
关键词
ZnTi-LDH/NiTi-LDH/羟基/乙硫醇/吸附脱硫Key words
ZnTi-LDH/NiTi-LDH/hydroxyl/ethyl mercaptan/adsorption desulfurization引用本文复制引用
基金项目
安徽省高等学校自然科学重点项目(2021)(KJ2021A1305)
淮南市绿色环保新材料技术创新中心支持项目(2022)(CXZX0090631)
安徽省提质培优"万人计划"教学名师培育项目(2021)(TZPY0090108)
出版年
2024
NETL
NSTL
万方数据