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燃烧法制备铜铈复合氧化物及其催化性能的研究

时间:2019-07-28 11:17来源:毕业论文
以燃烧法制备了CuO/CeO2催化剂,实验通过改变燃烧法制备催化剂过程中的不同燃料比例,考察这个因素对催化剂性能的影响,同时通过一系列手段对催化剂的结构和性质进行表征

摘要CO氧化由于其重大的理论和实际应用价值而受到广泛关注。CO氧化常常用作模型反应来研究完全氧化催化剂的催化行为,探讨反应机理;另外还可以用于汽车尾气净化、CO2激光器气体纯化、CO气体探测器、呼吸用气体净化装置、封闭体系以及质子交换膜燃料电池中少量CO的消除等。贵金属催化剂对CO催化氧化反应具有很高的活性及选择性,但由于其价格高昂、稳定性差,难以避免硫中毒等缺陷,抑制了其在工业中的广泛应用。CuO/CeO2催化剂由于其低廉的价格和接近贵金属催化剂的高活性而受到越来越多的人们关注
本文以燃烧法制备了CuO/CeO2催化剂,实验通过改变燃烧法制备催化剂过程中的不同燃料比例,考察这个因素对催化剂性能的影响,同时通过一系列手段对催化剂的结构和性质进行表征,考察CuO/CeO2催化剂的结构、性质与催化剂活性之间的关系37604
毕业论文关键词:CO氧化;CuO/CeO2催化剂;燃烧法
Combustion preparation CuO/CeO2 and studies its catalytic properties.
Abstract
CO oxidation has been widely concerned due to its important theoretical and practical application. It is often used as a model reaction to study the catalytic behavior of oxidation catalysts and discuss the reaction mechanism. In addition, it can be used for automobile emission purification, gas purification of CO2 laser device, CO Gas Detector, Gas-scavenging apparatus for breathing, the elimination of a small amount of CO in closed system or Proton
Exchange Membrane Fuel Cell (PEMFC) and so on. Noble metal catalysts have shown higher activity and selectivity for CO catalytic oxidation. But the defects, such as high cost, poor stability, difficulty to avoid sulfur poisoning, inhibit its widely application in industry. CuO/ CeO2 catalysts are getting more popular for its activity close to noble metal catalysts and its popular price. 源`自^六;维'论.文;网www.lwfree.cn
In this paper, the combustion method prepared CuO / CeO2 Catalysts, the change of combustion synthesis of catalyst in the process of different proportions of fuel. The effects of influence of the factors on the performance of the catalyst, at the same time, through a series of means of the catalyst structure and properties were characterized, examine the relationship between CuO / CeO2 Catalyst structure, properties and catalytic activity
Key words: CO catalytic oxidation, CuO/CeO2 catalyst, Combustion method
目录
一、文献综述    1
(一)催化CO氧化反应的研究背景    1
(二)贵金属催化剂    2
(三)非贵金属催化剂    2
(四) CuO/CeO2催化剂    3
(五)不同方法制备CuO/CeO2催化剂    3
1、浸渍法制备CuO/CeO2催化剂    4
2、沉积-沉淀法制备CuO/CeO2催化剂    6
3、共沉淀法制备CuO/CeO2催化剂    7
4、溶胶-凝胶法制备CuO/CeO2催化剂    7
5、柠檬酸络合法制备CuO/CeO2催化剂    7
6、微乳液法制备CuO/CeO2催化剂    8
7、惰性气体浓缩法制备CuO/CeO2催化剂    8
8、燃烧法制备CuO/CeO2催化剂    8
(六)燃烧合成法    9
(七)催化剂的表征检测方法    10
1、 XRD    10
2、 TPR    10
3、 TPD    10
4、红外光谱    11
(八) CuO/CeO2催化剂上CO催化氧化的机理    11
二、实验部分    12
(一)仪器与试剂    12
1、实验用试剂    12

源`自^六;维'论.文;网www.lwfree.cn


2、实验用气体    13
3、实验仪器    13
(二)催化剂的制备    14 燃烧法制备铜铈复合氧化物及其催化性能的研究:http://www.lwfree.cn/huaxue/20190728/36404.html
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