Influence of clay-rich sediments on methane hydrate formation: impacts on kinetic behaviour and gas storage capacity - Database

This database contains data relating to work carried out on "Influence of clay-rich sediments on methane hydrate formation: impacts on kinetic behaviour and gas storage capacity." It includes three main files: (1) the characterization (mineralogy and grain size distribution) and natural clay sediments associated with gas hydrates from the Romanian sector of the Black Sea; synthetic sediments that are sand, illite (ILL) and montmorillonite (MMT) rich clays used for methane hydrate formation in the laboratory . (2) Pressure and temperature data acquired during high pressure experiments of methane hydrates formation in the above-mentioned sedimentary matrices, which allowed the study of hydrate formation kinetics. (3) Data from Raman spectroscopy analyses performed on both synthetic and natural hydrates collected from the Black Sea. The data were obtained from the processing of the spectral signatures of methane in large (LC) and small cages (SC) of hydrate. For each sample analyzed, The dataset include the (1) the integrated intensities of the Raman spectral bands of methane hydrate (ALC and ASC), the relative cage occupancy of large to small cages (θLC/θSC), the derived absolute cage occupancies in large (θLC) and small cages (θLC) , the hydration number as well as the hydrate storage capacity.本数据库收录了围绕"富黏土沉积物对甲烷水合物（methane hydrate）形成的影响：对动力学行为与储气能力的作用"相关研究工作的实验数据。数据集包含三类核心文件：(1) 黑海罗马尼亚海域天然气水合物伴生天然黏土沉积物的表征数据（矿物学组成与粒度分布），以及实验室合成甲烷水合物所用的富砂、富伊利石（ILL）和富蒙脱土（MMT）人工沉积物；(2) 在上述沉积基质中开展甲烷水合物高压合成实验时采集的温压数据，该数据可用于探究水合物形成的动力学行为；(3) 针对黑海天然水合物与实验室合成水合物开展的拉曼光谱（Raman spectroscopy）分析数据，此类数据通过解析甲烷在水合物大笼（LC）与小笼（SC）中的光谱特征得到。对于每一个分析样本，本数据集包含：甲烷水合物拉曼光谱峰的积分强度（ALC与ASC）、大笼相对小笼的笼占有率比值（θLC/θSC）、推导得到的大笼（θLC）与小笼（θSC）绝对笼占有率、水合数以及水合物储气能力。