摘要
大气中持续增长的CO2是引起"温室效应"的主要原因,并给全球带来越来越严重的环境问题.消减CO2是人类共同面临的生存挑战,也是技术难题.在全球碳循环过程中,有多种调节方法可以减少大气中CO2含量,但目前只有地质储存被认为是可快速实施、见效明显的CO2减排方式.CO2流体-岩石相互作用是地质储存的核心科学问题,其直接影响CO2灌注效率、储存容量和效率、储存安全性和稳定性.纳米尺度的物质拥有奇异特性,具有很大的表面原子数和表面能.CO2流体-岩石相互作用存在多种尺度变化,由于微纳岩矿的表面原子数和表面能与离子、晶体之间的巨大差异,纳米尺度的CO2流体-岩石相互作用的速度和效率远远大于其他尺度.因此,急需开展CO2流体-岩石相互作用纳米尺度变化的主要控制因素与变化机理的研究;通过CO2地质储存研究,寻找、制备天然微纳岩矿以用于经济高效地捕获、储存和转化CO2,推动CO2减排理论和技术的发展.
Continuous growth of atmospheric CO2 concentration believed to be the major reason for ＂greenhouse effect＂,has become a global environmental issue in recent years. CO2 reduction is a challenge not only for the survival of human society,but also for the development of geosciences and technology. Although there are a variety of approaches to reduce atmospheric CO2,geological storage is considered as an effective way to reduce CO2. Understanding CO2 fluid-rock interaction is the key to successful geological storage of CO2,because of its effects on CO2 injection efficiency,and storage capacity,efficiency,safety and stability of the reservoir. Nanoscale materials have extraordinary properties with their abnormally huge amount of surface atoms and surface energy. CO2 fluid-rock interaction has multi-scale effect,with much higher rate and efficiency at nanoscale than those at other scales,due to substantial differences in surface atoms and surface energy. Therefore,it is critical to reveal the major factors and mechanisms of nanoscale interaction between CO2 fluid and rock to find some natural cost-effective nano-minerals for capture,storage and conversion of CO2.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2011年第1期163-171,共9页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学重点基金(No.40830748),国家自然科学青年基金(No.40602031),国家自然科学基金中俄国际合作项目(No.40910122)
