摘要
CO_(2)水合物在空调蓄冷、海水淡化以及碳捕集和封存等领域均具有应用价值。为解决水合物生成诱导期长、生长缓慢和转化率低等问题,在静态条件下,分别对纯水体系及质量分数为0.03%、0.05%和0.10%的十二烷基硫酸钠(SDS)溶液体系进行了CO_(2)水合物生成实验。结果表明,SDS可促进CO_(2)水合物的生成,而且随着SDS质量分数的增加,作用效果先增强后减弱;当SDS质量分数为0.05%时,作用效果最好,相比于纯水体系,诱导时间缩短51%,平均生长速率提高95%,转化率提高59%。通过Avrami模型分析发现,CO_(2)水合物以瞬时成核为主,同时也有少量零星成核存在,生长形态为一维生长。
CO_(2)hydrate has application value in the fields of air conditioning cold storage, seawater desalination and carbon capture and storage. In order to solve the problems of long induction period, slow growth and low conversion rate of hydrate formation, CO_(2)hydrate formation experiments were carried out in pure water system and sodium dodecyl sulfate(SDS) solution systems with mass fraction of 0.03%, 0.05% and 0.10% respectively under static conditions. The results show that SDS can promote the formation of CO_(2)hydrate, and the effect first increases and then decreases with the increase of SDS mass fraction. When SDS mass fraction is 0.05%, the effect is the best. Compared with the pure water system, the induction time is shortened by 51%, the average growth rate is increased by 95%, and the conversion rate is increased by 59%. Through the analysis of Avrami model, it is found that the CO_(2)hydrate is mainly instantaneous nucleation with a small amount of sporadic nucleation, and the growth form is one-dimensional growth.
作者
焦丽君
万润聪
赵鹏
王照亮
JIAO Lijun;WAN Runcong;ZHAO Peng;WANG Zhaoliang(New Energy College,China University of Petroleum,Qingdao 266580,Shandong,China)
出处
《天然气化工—C1化学与化工》
CAS
北大核心
2022年第3期88-93,共6页
Natural Gas Chemical Industry
基金
国家自然科学基金(51876223)
山东省自然科学基金(ZR201807060413)。
