氧化石墨烯/纳米石墨颗粒与SDS复配对CO_(2)水合物生成特性的影响

Effect of GO/GN and SDS compound system on formation characteristics of CO_(2) hydrate

利用水合物技术,促进CO_(2)水合物的生成有利于提高其水合物捕集封存的效率。分别采用五种不同质量分数的氧化石墨烯(GO)(0.005%、0.010%、0.015%、0.020%、0.025%)和纳米石墨颗粒(GN)(0.020%、0.040%、0.060%、0.080%、0.100%)与质量分数为0.05%的十二烷基硫酸钠(SDS)复配,探究了复配添加剂体系对CO_(2)水合物气体消耗、诱导时间和水合物生成速率的影响。结果表明,与纯SDS相对比,两种纳米石墨材料与SDS的复配体系对CO_(2)水合物生成都具有动力学促进效果,能够缩短诱导时间、增加耗气量、提高平均耗气速率。在同等工况条件下,与SDS复配时,GO的添加量更低,与GN相比促进效果更优。

Using hydrate technology,promoting the formation of CO_(2)hydrate is beneficial to improving the efficiency of CO_(2)capture and storage.Five different mass fractions of graphene oxide(GO)(0.005%,0.010%,0.015%,0.020%,0.025%)and nano-graphite particles(GN)(0.020%,0.040%,0.060%,0.080%,0.100%)were mixed with 0.05%sodium dodecyl sulfate(SDS)respectively to explore the effects of the compound additive systems on CO_(2)hydrate gas consumption,induction time and hydrate formation rate.The results show that,compared with pure SDS,the compound systems of two nano-graphite materials and SDS have kinetic promotion effects on the formation of CO_(2)hydrate,which can shorten induction time,increase gas consumption and increase average gas consumption rate.Under the same experimental conditions,when mixed with SDS,the addition amount of GO is lower,and the promotion effect is better than that of GN.