钙长石矿物的化学活性及其固碳潜力研究初探  

Preliminary Studies on Anorthite Chemical Activity and Carbon fixation Ability

作　　者：刘瑞[1] 王志华[1] 徐强[1] 于娜[1] 曹妙聪[1] 

机构地区：[1]长春工程学院勘查与测绘工程学院,长春130021

出　　处：《长春工程学院学报（自然科学版）》2013年第4期64-66,91,共4页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：国家自然基金项目(41172043);长春工程学院种子基金项目(2011)

摘　　要：斜长石的端元组分钙长石存在于深成岩和变质岩中,在湿法化学反应中可以析出Na+、K+和Ca2+等金属离子,其中的Ca2+可以和CO2反应,生成CaCO3。钙长石的吉布斯自由能高于温石棉,小于镁橄榄石。通过对长石进行酸碱预处理和提高反应温度,达到加速反应进行的目的。长石矿物中各种微孔隙和裂隙有助于矿物碳酸化反应的进行。自然界中长石矿物普遍发育的风化蚀变作用从一个侧面反映了长石固碳作用和功能。钙长石作为自然界中主要的含钙矿物之一具有良好的矿物活性和固碳潜力。Anorthite,end member of plagioclases,occures in the plutonic and metamorphic rocks.Anorthite can give off Na+,K+,Ca2+and other metal ions in wet carbonation,among which Ca2+ can react with CO2 and produce CaCO3.The Gibbs free energy of anorthite is higher than chrysotile and less than frosterite. The reaction rate for carbonation of anorthite can be accelerated by preprocesses via acid and base treaments,and elevating of reaction temperature.Varies kinds of cracks and micropores in anorthite also help carbonation reactions.In natural world,alteration and generally appeared weathering in the feldspar can result in the carbonation of feldspar,and represent the ability and function that feldspar for carbon fixation.Anorthite as one of the main calciumcontaining minerals has good chemical activity and good carbon fixation ability.

关 键 词：钙长石 二氧化碳 矿物碳酸化 化学活性 

分 类 号：P574[天文地球—矿物学]