Influence of 3A molecular sieve on tetrahydrofuran (THF) hydrate formation

• 来源期刊: 中国科学B辑(英文版)
• 年，卷（期）: 2008,（9）
• 页码范围: 893-900
• 页数: 8页
• 语种: 英文
• DOI: 10.1007/s11426-008-0035-2

摘要

Visual observation of the THF hydrate formation process in the presence of a 3A molecular sieve has been made at normal atmosphere and below a temperature of zero by microscopy. The results indicate that a 3A molecular sieve can induce the nucleation of the THF hydrate and promote the THF hydrate growth. With the existence of a 3A molecular sieve, the growth rate of THF hydrate is between 0.01 and 0.05 μm/s. In comparison with the system without any 3A molecular sieve, the growth rate increases about 4 nm/s. After the THF hydrate grows into megacryst, the crystals will recombine and partially change under the same condition.