Non-exponential 1H and 2H NMR relaxation and self-diffusion in asphaltene-maltene solutions

This dataset contains data to obtain the NMR relaxation parameters T₁ and T₂, as well as the self-diffusion coefficients of different small molecules (maltenes) in a solvent in the absence and presence of a high asphaltene concentration. <br>Therefore, different maltenes were chosen (see README file) and solutions consisting of 95vol% solvent and 5vol% maltene were prepared (Pure). The solvents were benzene-d6 and benzene for proton-bearing maltenes and completely <br>deuterated maltenes, respectively. The relaxation parameters of the maltenes protons/deuterons were measured using the inversion recovery (T₁) and the Carr-Purcell-Meiboom-Gill (T₂) pulse sequence, while the stimulated echo pulse sequence was used to determine the self-diffusion coefficient. To determine further the parameters in presence of an asphaltene, the same solutions containing a high concentration of asphaltene (150g/l) were prepared (Slb). The experiments were conducted at room temperature (20 °C) at a magnetic field strength of 7.05T. <br>This dataset contains the raw and processed data of these experiments.<br>本数据集收录了用于获取核磁共振（NMR）弛豫参数T₁、T₂，以及不同小分子沥青质可溶组分（maltenes）在含、不含高浓度沥青质（asphaltene）的溶剂体系中自扩散系数的相关实验数据。 为此，研究选取了多种沥青质可溶组分（详见README文件），并配制了体积占比为95%溶剂与5%沥青质可溶组分的溶液（下称纯样组）。 针对含质子的沥青质可溶组分，实验采用的溶剂为氘代苯-d6（benzene-d6）；针对全氘代沥青质可溶组分，则采用普通苯作为溶剂。 研究采用反转恢复脉冲序列（用于测定T₁）与Carr-Purcell-Meiboom-Gill脉冲序列（用于测定T₂），对沥青质可溶组分的质子与氘核弛豫参数进行了测定；同时采用受激回波脉冲序列测定自扩散系数。 为测定沥青质存在条件下的相关参数，研究人员还配制了添加了150g/L高浓度沥青质的同款溶液（下称Slb组）。 所有实验均在室温（20℃）、磁场强度7.05T的条件下开展。 本数据集收录了上述实验的原始数据与处理后数据。