High-pressure adsorption of methane on montmorillonite, kaolinite and illite
High-pressure adsorption of methane on montmorillonite, kaolinite and illite
复制标题
蒙脱石、高岭石、伊利石高压吸附甲烷
DOI：
10.1016/j.clay.2013.09.009
复制
发表时间：
2013-11-01
影响因子：
5.6
通讯作者：
He, Hongping
中科院分区：
文献类型：
--
作者：
Liu, Dong;Yuan, Peng;He, Hongping
在温度为60℃、压力高达18.0 Mpa的条件下，研究了钙蒙脱石(Mt)、高岭石(Kaol)和伊利石(II)对甲烷(CH4)的吸附，并用Langmuir吸附模型评价了吸附容量。以不同层间距的热解产物为吸附剂，考察了吸附水分和粘土矿物层间距对CH4吸附的影响。MT、Kaol和II具有较高的CH4吸附容量，其最大Langmuir吸附容量分别为Mt 6.01 cm(3)/g、Kaol 3.88 cm(3)/g和Il 2.22 cm(3)/g。CH4只吸附在Kaol和II的外表面上，但在Mt的层间距大于CH4分子尺寸(0.38 nm)的层间距也发生了吸附。甲烷在Mt层间的吸附是由加热的Mt产物较低的CH4吸附容量(随层间距离而定)所支持的
Methane (CH4) adsorption of Ca2+-montmorillonite (Mt), kaolinite (Kaol) and illite (II) at 60 degrees C and pressures up to 18.0 MPa was investigated, during which the adsorption capacity was evaluated by the Langmuir adsorption model. The influences of adsorbed water and the interlayer distance of the clay minerals on CH4 adsorption were explored by using heated Mt products with different interlayer distances as the adsorbent. Mt, Kaol and II showed high CH4 adsorption capacities, and their maximum Langmuir adsorption capacities were Mt 6.01 cm(3)/g; Kaol, 3.88 cm(3)/g; and Il, 2.22 cm(3)/g, respectively. CH4 was adsorbed only on the external surface of Kaol and II; however, adsorption also occurred in the interlayer space of Mt which had a larger interlayer distance than the size of a CH4 molecule (0.38 nm). CH4 adsorption in the interlayer space of Mt was supported by the lower CH4 adsorption capacity of heated Mt products (with the interlayer distance