The characteristics of CO2 hydrate formation in nanofluids were investigated experimentally in a small scale reaction system. The effects of type

particle size and mass fraction of nanoparticles on CO2 hydrate formation characteristics were stuided . Compared with pure water

CuO and SiO2 nanoparticles increase gas consumption

but extend induction time of gas hydrate formation. Results show that metal nanoparticle Cu and metal oxide nanoparticle Al2O3 both have a significant impact on the induction time and gas consumption of CO2 hydrate formation. Al2O3 shows a remarkable effcet on characteristics of gas hydrate formation with a particle size of 30 nm. Compared with pure water

the induction time during hydrate formation in 0.1 %-30 nm- Al2O3 nanofluid is reduced by 76.9 %

and gas consumption is increased by 23.2 %. With the increase of Cu nanoparticle mass fraction

CO2 gas consumption is first increased and then decreased. The mechanism of the effect of nanoparticles on characteristics of CO2 hydrate formation was discussed.