Scholars have been unable to arrive at a consistent verdict on the effect of wax on hydrate nucleation, as the influence of emulsifiers on the dispersion of wax in oil has been neglected. Accordingly, we discuss the effects of wax, span 80, and their coupling on hydrate nucleation utilizing CO as the hydrate guest molecule to clarify the precise role of wax on hydrate nucleation. It was discovered that the incorporation of either 10 wt% wax or 2 vol% span 80 prolonged the induction period, and their combined addition led to a longer induction period. This phenomenon indicates that wax and span 80 negatively impact on hydrate nucleation, and their combination strengthens this process. A combination of macroscopic and microscopic techniques was employed to illustrate the mechanism underlying the effect of wax on hydrate nucleation. The study found that both wax and span 80, as well as their coupling, facilitated the dispersion of water droplets in the oil. However, the waxes alone had a needle-like shape and could not entirely encase the water droplets, resulting in the aggregation of hydrate particles. While span 80 changes the shape of the wax, the coupling effect completely encapsulates the water droplets, preventing gas mass transfer and inhibiting hydrate nucleation. Furthermore, the wax stabilizes the structure of the span 80-containing emulsion, thus enhancing the anti-aggregation of span 80.

中文翻译：

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研究存在/不存在跨度80时蜡对水合物形成的影响


由于忽略了乳化剂对蜡在油中分散的影响，学者们一直无法就蜡对水合物成核的影响得出一致的结论。因此，我们讨论了蜡、span 80 及其偶联对利用 CO 作为水合物客体分子的水合物成核的影响，以阐明蜡对水合物成核的精确作用。结果发现，加入 10 wt% 蜡或 2 vol% span 80 可以延长诱导期，并且它们的组合添加会导致更长的诱导期。这一现象表明蜡和span 80 对水合物成核产生负面影响，并且它们的组合强化了该过程。采用宏观和微观技术相结合来说明蜡对水合物成核作用的潜在机制。研究发现蜡和span 80 以及它们的耦合都有利于水滴在油中的分散。然而，单独的蜡具有针状形状，不能完全包裹水滴，导致水合物颗粒聚集。虽然跨度 80 改变了蜡的形状，但耦合效应完全封装了水滴，防止气体传质并抑制水合物成核。此外，蜡稳定了含有span 80的乳液的结构，从而增强了span 80的抗聚集性。