Experimental investigation of methane hydrate formation in the presence of metallic packing

Surface modification of mesostructured cellular foam to enhance hydrogen storage in binary THF/H2 clathrate hydrate

“…All experiments were performed in accordance with the previously reported standard procedure. 45,64,65 In summary, the reactor was thoroughly cleaned with H 2 O and dried to remove contaminants/impurities before commencing any experiment. To carry out the H 2 uptake experiments, 5.56 mol% THF solution was added to 0.5 g of the synthesized material (dried overnight at 343 K) based on 100% pore volume saturation.…”

“…All experiments were performed in accordance with the previously reported standard procedure. 45,64,65 In summary, the reactor was thoroughly cleaned with H 2 O and dried to remove contaminants/impurities before commencing any experiment.…”

Engineering of hollow periodic mesoporous organosilica nanorods for augmented hydrogen clathrate formation

“…All the tests were performed using a standard approach as presented in earlier publications, 71,72 here we provide a summary of the same. Prior to the starting of experiments, the reactor was thoroughly cleaned with H 2 O and dried to remove any impurities.…”

“…At any given real-time, the amount of H 2 gas consumed during hydrate formation was quantified using the compressibility factor equation of state as shown in eqn (1), the normalized gas uptake (NG t , hydrate growth) was quantified using eqn (2), the percentage of H 2 O to hydrate conversion is determined by eqn (3) and (4)where Δ n H 2 , t is the moles of H 2 gas consumed at any given time t ; V r is the reactor's gas-phase volume measured using the helium expansion method; 71,72 T and P are the temperature and pressure within the reactor; z is the compressibility of H 2 gas calculated using the Lemmon–Huber–Leachman correlation; 73 R is the ideal gas constant; n H 2 O is the moles of H 2 O introduced into the reactor; n THF is the moles of THF consumed for hydrate formation with the assumption that THF occupies only the large cages of classic sII hydrate, and Hn refers to hydration number, which is considered to be 5.67 in order to comply with other binary H 2 -THF hydrate experiments available in the literature. 74…”

“…where Dn H 2 ,t is the moles of H 2 gas consumed at any given time t; V r is the reactor's gas-phase volume measured using the helium expansion method; 71,72 T and P are the temperature and pressure within the reactor; z is the compressibility of H 2 gas calculated using the Lemmon-Huber-Leachman correlation; 73 R is the ideal gas constant; n H 2 O is the moles of H 2 O introduced into the reactor; n THF is the moles of THF consumed for hydrate formation with the assumption that THF occupies only the large cages of classic sII hydrate, and Hn refers to hydration number, which is considered to be 5.67 in order to comply with other binary H 2 -THF hydrate experiments available in the literature. 74 The H 2 storage capacity relative to the sample's H 2 O content (hydrate storage capacity: q H 2 w ), H 2 capacity relative to the dry mass of the solid (dry weight storage capacity: q H 2 A ), and H 2 capacity relative to the total mass of the system (total weight storage capacity: q H 2 T ), were also evaluated as shown in eqn ( 5)-( 7)…”