The Effect of Graphene Morphology on Natural Gas Hydrate Enrichment

In this research, a new method of parallel natural gas enrichment process has been introduced with the process of formation of gas hydrates, and the effect of graphene nanostructures has been investigated including graphene nanosheets, nanoporous graphene and graphene hammers on the process. For this purpose, first graphene nanosheets were synthesized by two method of chemical vapor deposition (CVD) and modified Hammers, then synthesized grapheme sheets and nanoporous graphene were functioned to measure their effect on the process. The crystalline and nano structure of all nanostructures was investigated by analyzing XRD, FTIR, SEM and BET. There nano fluids were prepared containing 1% by weight of nanostructures and was used in the process of natural gas hydrates formation containing 92.7% of methane under conditions of 6.9 kPa & 4oC. The results were compared by, a control sample containing 100 g of deionised water. After hydrate formation, by gradually increasing the reactor temperature and decomposition of 95% of the hydrate, released natural gas was sampled and compared with the GC analysis of its compounds. The results were showen an increasing of 3.48% and 4.6% of methane in the presence of nanoporous graphene and functionalized nanoparticle graphene, respectively and the removal of corrosive compounds such as carbon dioxide.