Kinetic characteristics of methane hydrate in functionalized multi-walled carbon nanotubes and L-leucine compounding system

Objective Accelerated the generation of natural gas hydrate is crucial for advancing hydrate-based technologies such as gas storage, gas separation, and CO2 capture. Methods The kinetic characteristics of methane hydrate generated with the wB=0.05% functionalized (hydroxylated, carboxylated, and aminated) multi-walled carbon nanotubes(MWCNT) system, and in combination with the wB=1.0% L-leucine were investigated through constant temperature and constant volume methods. Results The combination of multiwalled carbon nanotubes and carboxylated and hydroxylated multiwalled carbon nanotubes with L-leucine, significantly reduced the induction time for natural gas hydrate nucleation to approximately 25, 22, and 13 minutes, respectively. This promotion effect is comparable to that of the typical promoter sodium dodecyl sulfate, and the promotion effect is better than that of a single additive system. The methane storage density of the compounded system reached 136-142 mg/g. Analysis of both the average and instantane