New density data for multicomponent CO2-rich mixtures

New density data of multicomponent CO2-rich mixtures containing nitrogen, oxygen, argon, methane, and hydrogen as impurities in temperatures from 273 K to 313 K and pressures up to 22 MPa.本数据集包含以氮气、氧气、氩气、甲烷及氢气为杂质的多组分富二氧化碳（CO2）混合物的新型密度数据，测试温度范围为273 K至313 K，最高压力可达22 MPa。