The separation capacities of a graphene-carbon nanotube hybrid structure(GNHS) to a CO2/H2S/CH4ternary mixture under conditions of different pressures and different temperatures were investigated by the grand canonical Monte Carlo simulation. The experimental results showed that components CO2and H2S could be simultaneously and efficiently separated by the GNHS and the selectivities of the two components relative to CH4reached up to about 100. Increasing temperature was adverse to the sepa ration of the mixture. Compared with a binary mixture having the same molar ratio,the presence of H2S in the ternary mixture could significantly improve the CO2separation capacity of the GNHS,while the presence of CO2had little effect on H2S separation.%采用蒙特卡洛模拟研究了不同压力和温度下石墨烯-碳纳米管三维结构(GNHS)对CO2/H2S/CH4三元混合物的分离能力.实验结果表明,GNHS可同时高效地分离CO2与H2S组分,两组分相对于CH4的选择性均高达100左右.升高温度不利于混合物的分离.与具有相同摩尔比的二元混合物相比,三元混合物中H2S的存在可显著提高GNHS对CO2的分离能力,而CO2的存在对H2S的分离没有太大影响.
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