Abstract
Nanoporous materials can significantly promote the formation process of gas hydrate by reducing the barrier of physical chemistry. In this work, the CO2/H2/H2O hydrates formation with tetra-n-butyl ammonium bromide (TBAB) and nano Al2O3 or carbon nano tube (CNT) were studied and compared in term of kinetic curves. It was found that both TBAB-Al2O3 and TBAB-CNT could promote the CO2/H2/H2O hydrate formation process. Furthermore, compared with TBAB-Al2O3, TBAB-CNT has the better promotion effect on the CO2/H2/H2O hydrate formation process. It is interesting that the CO2/H2/H2O hydrate formation process with TBAB-Al2O3 represents reformation phenomenon. It possibly forms sI CO2/H2/H2O hydrate firstly and finally forms semiclathrate CO2/H2/H2O hydrate.
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