Aqueous Chemistry of Metals under Supercritical Water Reactor Coolant Conditions

超临界水反应堆冷却剂条件下金属的水化学

• 批准号: 424117-2011
• 负责人: Tremaine, Peter
• 金额: $ 5.83万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: NSERC/NRCan/AECL Generation IV Energy Technologies Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=573870
• 关键词: Aqueous; Chemistry; Metals; under; Supercritical

This proposal seeks funding for the second phase of a collaborative project that uses state-of-the-art instruments to determine ionization and association constants for simple acids, bases, dissolved metals, and metal complexes under near-critical and super-critical conditions that will be encountered in the proposed Generation IV Super-Critical-Water-cooled nuclear Reactor (SCWR). The instrumental methods include Raman and UV-visible spectroscopy; and visualization techniques; supported by ab initio computations. These are extremely specialized pieces of high-precision equipment, with capabilities shared by few other laboratories in North America, constructed for the specific purpose of making quantitative measurements under SCWR reactor operating conditions. The first phase of the project included the construction of high-pressure cells and instruments for operation in the supercritical region. Theoretical and Raman studies on copper, nickel and cobalt complexes, and conductivity studies on strontium ion pairing up to 350 oC were completed. The second phase will extend these studies to more species, and to temperatures above the critical point (T > 373 oC). Semi empirical equations will be developed to predict the behaviour of these and other aqueous species under the extreme conditions relevant to Gen IV steam generator chemistry. The metals to be studied include Co2+, Ni2+, Cu+, Fe3+, Fe2+, Pb2+ and ZrO2+, along with their reaction products with contaminant species and possible pH control agents.

该提案旨在为一个合作项目的第二阶段提供资金，该项目使用最先进的仪器来确定在拟议的第四代超临界水冷核反应堆（SCWR）中将遇到的近临界和超临界条件下简单酸，碱，溶解金属和金属络合物的电离和缔合常数。 仪器方法包括拉曼和紫外可见光谱;和可视化技术;支持从头计算。 这些是非常专业的高精度设备，具有北美其他实验室所共有的能力，是为了在超临界水反应堆运行条件下进行定量测量的特定目的而建造的。 该项目的第一阶段包括建造在超临界区域运行的高压电池和仪器。 完成了铜、镍和钴配合物的理论和拉曼研究，以及高达350 oC的锶离子配对的电导率研究。 第二阶段将把这些研究扩大到更多的物种和超过临界点（T > 373 oC）的温度。 将开发半经验方程，以预测这些和其他含水物质在与第四代蒸汽发生器化学相关的极端条件下的行为。待研究的金属包括Co 2+、Ni 2+、Cu+、Fe 3+、Fe 2+、Pb 2+和ZrO 2+，沿着它们与污染物物种和可能的pH控制剂的反应产物。