QCM-D在可燃冰等水合物液化成核抑制剂研究中的应用

Clathrate hydrates constitute a class of ice-like inclusion compounds formed from guest molecules (usually light hydrocarbon gases) and water.The blockage of pipelines by the formation of natural gas hydrates is a serious problem for the energy industry. Traditionally, large volumes of chemicals such as methanol are employed as thermodynamic hydrate inhibitors. Recently, low-dosage hydrate inhibitors (LDHIs) have also been investigated.We have previously shown that antifreeze proteins (AFPs) have higher inhibition activities than the commercial LDHI poly(N-vinylpyrrolidone)(PVP).Remarkably, active AFPs also demonstrated the novel ability to eliminate the “memory effect” (that is, faster reformation of hydrate after melting), while PVP did not. The results suggest that a better understanding of the inhibition mechanism of natural AFPs can help in the design of more efficient synthetic LDHIs. The adsorption of LDHIs onto silica was determined using a quartz crystal microbalance (QCM) equipped to determine the energy loss or dissipation factor (D)(QCM-D).