Solid state and sub-cooled liquid vapour pressures of cyclic aliphatic dicarboxylic acids
Solid state and sub-cooled liquid vapour pressures of cyclic aliphatic dicarboxylic acids
复制标题
DOI：
10.5194/acp-11-655-2011
复制
发表时间：
2010-10
影响因子：
6.3
通讯作者：
A. M. Booth;W. Montague;M. Barley;D. Topping;G. Mcfiggans;A. Garforth;C. Percival
中科院分区：
文献类型：
--
作者：
A. M. Booth;W. Montague;M. Barley;D. Topping;G. Mcfiggans;A. Garforth;C. Percival
抽象的。首次用KEMS测定了一系列脂肪族环状二元酸的固体蒸汽压随环尺寸的增大。此外，还测定了对大气有重要影响的化合物：顺-松烯酸和左旋葡聚糖。用差示扫描量热法(DSC)测定了化合物的熔点、熔融热焓和熔融熵，并用它们确定了化合物的过冷液体蒸汽压。比较了直链、支链和环状二元酸的过冷液体蒸汽压与几种估算方法的差异。
Abstract. Knudsen Effusion Mass Spectrometry (KEMS) has been used to measure for the first time the solid state vapour pressures of a series of aliphatic cyclic dicarboxylic acids with increasing ring size. Additionally the atmospherically important compounds; cis -pinonic acid and levoglucosan were also measured. Differential Scanning Calorimetry (DSC) was used to measure melting points, enthalpies and entropies of fusion, which were used to determine sub-cooled liquid vapour pressures for the compounds. The sub-cooled liquid vapour pressure of straight chain, branched and cyclic dicarboxylic acids was compared to a selection of estimation methods.