Clathrate Hydrate Equilibrium in Methane–Water Systems with the Addition of Monosaccharide and Sugar Alcohol
Clathrate Hydrate Equilibrium in Methane–Water Systems with the Addition of Monosaccharide and Sugar Alcohol
复制标题
添加单糖和糖醇的甲烷-水体系中的笼形水合物平衡
DOI：
10.1021/acs.jced.6b00756
复制
发表时间：
2017
影响因子：
--
通讯作者：
J. Nagao
中科院分区：
文献类型：
--
作者：
Yusuke Jin;Masato Kida;Y. Konno;J. Nagao
使用木糖（单糖）和木糖醇（糖醇）作为添加剂分子，通过等容法测量具有可混溶添加剂（单糖和糖醇）的甲烷笼形水合物（CH4水合物）体系中的相平衡压力-温度（pT）条件。平衡 pT 数据是在 3–7 MPa 的压力范围和水溶液中添加剂摩尔分数范围（xadditive）0.006–0.03 范围内收集的。两个系统中的平衡 pT 条件都存在于比无添加剂 CH4-水系统更高的压力区域。通过粉末 X 射线衍射和拉曼光谱测量，两个体系中形成的晶体被鉴定为结构 I CH4 水合物。考虑到相界和晶体学结果，木糖和木糖醇充当笼形水合物体系的热力学抑制剂。
Phase equilibrium pressure–temperature (pT) conditions in methane clathrate hydrate (CH4 hydrate) systems with miscible additives (monosaccharide and sugar alcohol) were measured by an isochoric method using xylose (monosaccharide) and xylitol (sugar alcohol) as additive molecules. The equilibrium pT data were collected in the pressure range of 3–7 MPa and an additive mole fraction range in aqueous solution, xadditive, of 0.006–0.03. The equilibrium pT conditions in both systems existed in higher-pressure regions than that for a additive-free CH4–water system. Crystals formed in both the systems were identified as structure I CH4 hydrates by powder X-ray diffraction and Raman spectroscopy measurements. Considering the phase boundary and crystallography results, xylose and xylitol acted as thermodynamic inhibitors for clathrate hydrate systems.
影响因子：
2.9
作者：
Ohno, Hiroshi;Kida, Masato;Nagao, Jiro
通讯作者：
Nagao, Jiro