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Experimental Investigation of CO2 Hydrate Formation in the Water Containing Graphite Nanoparticles and Tetra-n-butyl Ammonium Bromide
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-01-12 00:00:00 , DOI: 10.1021/acs.jced.7b00785 Shidong Zhou 1, 2, 3 , Kun Jiang 1 , Yongli Zhao 1 , Yuandao Chi 2 , Shuli Wang 1 , Guozhong Zhang 3
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-01-12 00:00:00 , DOI: 10.1021/acs.jced.7b00785 Shidong Zhou 1, 2, 3 , Kun Jiang 1 , Yongli Zhao 1 , Yuandao Chi 2 , Shuli Wang 1 , Guozhong Zhang 3
Affiliation
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The effects of tetra-n-butyl ammonium bromide (TBAB) and graphite nanoparticles (GN) on phase equilibrium curves, gas consumption, induction time, and ratio of water to hydrate conversion were investigated in this work. Aqueous solutions of the mixture of TBAB and GN with three concentrations of 0.04%, 0.06%, 0.08%, and 0.1% were tested in a stirred reactor. The graphite nanoparticles with a concentration of 0.08% showed the highest hydrate formation rate, revealing that 0.08% is the optimal concentration for the hydrate formation in this study. Comparing the induction time of the pure TBAB system with that of various concentrations of GN, a decrease by 16.6% of induction time at 0.08% GN concentration was observed, while the value decreased by 31.62% at a GN concentration of 0.1%. The final water to hydrate conversion reached the maximum value of 50.75% at a GN concentration of 0.08%. The concentration effect of graphite nanoparticles on the phase equilibrium curve in the presence of TBAB was also studied in this work. As reported, the concentration of graphite nanoparticles had little effect on the phase equilibrium of CO2 hydrate formation, while adding TBAB to nanofluids could greatly reduce the hydrate formation pressures.
中文翻译：
含水石墨纳米粒子和四正丁基溴化铵中CO 2水合物形成的实验研究
四的效果ñ研究了丁基丁基溴化铵（TBAB）和石墨纳米颗粒（GN）的相平衡曲线，气体消耗量，诱导时间以及水与水合物转化率。在搅拌反应器中测试三种浓度为0.04％，0.06％，0.08％和0.1％的TBAB和GN混合物的水溶液。浓度为0.08％的石墨纳米颗粒显示出最高的水合物生成速率，表明0.08％是本研究中形成水合物的最佳浓度。将纯TBAB系统的诱导时间与各种浓度的GN的诱导时间进行比较，观察到在0.08％GN浓度下诱导时间减少了16.6％，而在0.1％GN浓度下诱导时间减少了31.62％。最终水到水合物的转化率达到最大值50。GN浓度为0.08％时为75％。这项工作中还研究了在TBAB存在下石墨纳米粒子对相平衡曲线的浓度影响。如所报道的，石墨纳米粒子的浓度对CO的相平衡影响很小2水合物的形成，同时在纳米流体中添加TBAB可以大大降低水合物的形成压力。
更新日期：2018-01-13
中文翻译：
含水石墨纳米粒子和四正丁基溴化铵中CO 2水合物形成的实验研究
四的效果ñ研究了丁基丁基溴化铵（TBAB）和石墨纳米颗粒（GN）的相平衡曲线，气体消耗量，诱导时间以及水与水合物转化率。在搅拌反应器中测试三种浓度为0.04％，0.06％，0.08％和0.1％的TBAB和GN混合物的水溶液。浓度为0.08％的石墨纳米颗粒显示出最高的水合物生成速率，表明0.08％是本研究中形成水合物的最佳浓度。将纯TBAB系统的诱导时间与各种浓度的GN的诱导时间进行比较，观察到在0.08％GN浓度下诱导时间减少了16.6％，而在0.1％GN浓度下诱导时间减少了31.62％。最终水到水合物的转化率达到最大值50。GN浓度为0.08％时为75％。这项工作中还研究了在TBAB存在下石墨纳米粒子对相平衡曲线的浓度影响。如所报道的，石墨纳米粒子的浓度对CO的相平衡影响很小2水合物的形成，同时在纳米流体中添加TBAB可以大大降低水合物的形成压力。
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