负载型双金属催化剂催化氢化二氧化碳的实验研究

发布时间：2018-05-07 08:11

本文选题：有机酸 + 催化剂　；参考：《华北电力大学》2017年硕士论文

【摘要】：温室的气体大量排放导致的全球变暖现象已成为当今最严重的环境问题之一,二氧化碳作为最主要的一种温室气体,关于它的减排问题是国内外相关学者研究的一大热门。开发对于二氧化碳的捕集、封存及资源化利用技术已在全球范围内得到了广泛的关注。燃煤电厂是二氧化碳的一大排放源,使用燃煤电厂排放出的二氧化碳作为原材料,并将其进行资源化利用是电力行业节能减排的创新性研究课题。本文中使用供氢体及自行制备的催化剂作为一套催化体系实现燃煤烟气二氧化碳的高效转化,设计了在温和条件下将二氧化碳转化为有机酸的新工艺,该法为燃煤电厂二氧化碳的资源化利用和烟气净化提供了新思路。本文的主要工作包括:一、二氧化碳转化为有机酸的实验研究。其主要包括设计供氢体吸收转化二氧化碳的实验方案、通过设定相关影响参数、确立最佳反应条件并对实验数据进行分析。最终实验结果表明:在常温常压环境中M可将二氧化碳转化为有机酸;反应温度、吸收剂M的浓度、溶液pH值和总流量大小是影响供氢体吸收转化效率的关键参数。二、供氢剂M催化转化二氧化碳的催化剂的初步实验研究。其中主要包括通过比较不同催化剂对于反应的催化活性,设计研发催化剂,探究催化剂的最佳制备条件。催化剂载体、浸渍时间、煅烧温度、以及原料比例是提高催化效率的主要因素,同时进行了催化剂催化转化的实验,证明催化剂可有效促进二氧化碳的转化。三、产物检测、反应机理探索和研究展望。其主要包括对反应产物中有机酸的检测,对催化剂进行了表征研究,初步分析了催化机理,并提出了展望。
[Abstract]:Global warming caused by a large amount of greenhouse gas emissions has become one of the most serious environmental problems, carbon dioxide as the most important greenhouse gas, about its emission reduction problem is a hot topic of domestic and foreign scholars. The development of carbon dioxide capture, sequestration and resource utilization technology has been widely concerned around the world. Coal-fired power plant is one of the major emission sources of carbon dioxide. Using carbon dioxide emitted from coal-fired power plant as raw material and using it as a resource is an innovative research topic of energy saving and emission reduction in power industry. In this paper, the hydrogen donor and the self-prepared catalyst are used as a set of catalyst system to realize the high efficiency conversion of carbon dioxide from coal-fired flue gas, and a new process of conversion of carbon dioxide to organic acid under mild conditions is designed. This method provides a new idea for the utilization of carbon dioxide and flue gas purification in coal-fired power plants. The main work of this paper is as follows: 1. Experimental study on the conversion of carbon dioxide to organic acids. It mainly includes the design of the experimental scheme for the absorption and conversion of carbon dioxide by hydrogen donor. The optimal reaction conditions are established by setting the relevant parameters and the experimental data are analyzed. The final experimental results show that carbon dioxide can be converted into organic acid under normal temperature and pressure, and the reaction temperature, concentration of absorbent M, pH value of solution and total flow rate are the key parameters affecting the conversion efficiency of hydrogen donor. Second, the preliminary experimental study on the catalyst for the conversion of carbon dioxide to carbon dioxide catalyzed by hydrogen donor M. It mainly includes comparing the catalytic activity of different catalysts, designing and developing catalysts, and exploring the optimum preparation conditions of catalysts. The catalyst carrier, impregnation time, calcination temperature and the ratio of raw materials are the main factors to improve the catalytic efficiency. At the same time, the catalytic conversion of the catalyst has been carried out, which proves that the catalyst can effectively promote the conversion of carbon dioxide. Third, product detection, reaction mechanism exploration and research prospect. It mainly includes the detection of organic acids in the reaction product, the characterization of the catalyst, the preliminary analysis of the catalytic mechanism, and the prospect of the catalyst.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X701

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