Carbon Dioxide Postcombustion Capture: A Novel Screening Study of the Carbon Dioxide Absorption Performance of 76 Amines
Carbon Dioxide Postcombustion Capture: A Novel Screening Study of the Carbon Dioxide Absorption Performance of 76 Amines
复制标题
DOI：
10.1021/es901376a
复制
发表时间：
2009-08-15
影响因子：
11.4
通讯作者：
Attalla, Moetaz
中科院分区：
文献类型：
--
作者：
Puxty, Graeme;Rowland, Robert;Attalla, Moetaz
大幅度和迅速减少温室气体排放被认为是减轻全球变暖潜在气候影响的必要条件。燃烧后捕集（PCC）和储存由使用化石燃料发电产生的二氧化碳（CO2）是实现这些减排所需的关键技术，用于CO2捕集的最成熟技术是可逆的化学吸收到胺水溶液中。在这项研究中，从76种不同的胺的水溶液的CO2吸收能力的测量结果。测量使用一种新的等温重量分析（伊加）方法和传统的吸收装置。七at-nines，由一个伯，三个仲，和三个叔胺，被确定为表现出突出的吸收能力。大多数具有许多共同的结构特征，包括空间位阻和距离氮2或3个碳的羟基官能度。来自伊加测量的初始CO2吸收率数据也用于指示相对吸收率。大多数在产能方面表现出色的产品也显示出与工业标准单乙醇胺（MEA）相当的初始吸收率。这表明，在吸收能力和动力学方面，它们是有前途的候选人进行进一步研究。
The significant and rapid reduction of greenhouse gas emissions is recognized as necessary to mitigate the potential climate effects from global warming. The postcombustion capture (PCC) and storage of carbon dioxide (CO2) produced from the use Of fossil fuels for electricity generation is a key technology needed to achieve these reductions, The most mature technology for CO2 Capture is reversible chemical absorption into an aqueous amine solution. In this study the results from measurements of the CO2 absorption capacity of aqueous amine solutions for 76 different amines are presented. Measurements were made using both a novel isothermal gravimetric analysis (IGA) method and a traditional absorption apparatus. Seven at-nines, consisting of one primary, three secondary, and three tertiary amines, were identified as exhibiting outstanding absorption capacities. Most have a number of structural features in common including steric hindrance and hydroxyl functionality 2 or 3 carbons from the nitrogen. Initial CO2 absorption rate data from the IGA measurements was also used to indicate relative absorption rates. Most of the outstanding performers in terms of capacity also showed initial absorption rates comparable to the industry standard monoethanolamine (MEA). This indicates, in terms of both absorption capacity and kinetics, that they are promising candidates for further investigation.