Two‐step formation of methane–propane mixed gas hydrates in a batch‐type reactor

Abstract

Vapor compositions of methane and propane mixed gas in a batch

Communication: Structural interconversions between principal clathrate hydrate structures

“…Although the determination of the relationship between the hydrate structures that are formed and the sizes of the guest molecules is difficult when gas mixture is employed, we note that there is experimental evidence for the formation of multiple clathrate hydrate phases from gas mixtures. For example, Schicks and Ripmeester 15 observed the coexistence of sI and sII hydrates formed from methane, ethane, and propane mixtures and Uchida et al 38 reported the coexistence of sI and sII hydrates formed from methane and propane mixtures. In recent work, Schicks and Luzi-Helbing 17 were also able to demonstrate the coexistences of sI and sH hydrates for a gas mixture of methane and FIG.…”

Kinetics and Stability of CH4–CO2 Mixed Gas Hydrates during Formation and Long‐Term Storage

“…For pure CH 4 hydrates, the two methods gave consistent results; however, the agreement was not as good for mixed gas hydrates. To address this discrepancy, Uchida et al [15,16] used gas chromatography, hereafter GC, on the decomposed gases from mixed gas hydrates. They found that the cage occupancy estimated from both Raman spectroscopy and GC agreed with the thermodynamic estimation.…”

Mutual solubilities of hydrocarbons and water with the CPA EoS

“…On the other hand gas hydrates can be used as an unconventional natural gas energy storage since the gas hydrates can contain more than 150 times as much natural gas than gaseous natural gas at standard temperature and pressure. Most light hydrocarbons are known to form stable gas hydrates only under high pressure and low temperature conditions [4].…”