中文摘要：

利用高压釜反应装置，在一定温度和压力下，对正十六烷与硫酸镁热化学还原反应含水体系进行了模拟，通过气相色谱仪、微库仑仪、毛细管气相色谱／脉冲火焰光度检测器、红外光谱仪及x射线衍射仪对气、油、固三相产物分别进行了分析，并进行了动力学研究。结果表明，该体系在温度为450～550℃时可以发生反应，主要生成氧化镁、硫、焦炭、硫化氢、二氧化碳以及硫醇类、硫醚类和噻吩类等一系列有机硫化物，反应活化能为5488kJ／mol。

英文摘要：

Thermal simulation experiments on the thermochemical sulfate reduction （TSR） system of n-hexadecane and magnesium sulfate were carried out using an autoclave operated at specified temperature and pressure in the presence of water. Properties of the gas-oil-solid 3-phase products were analyzed by some advanced analytical methods including gas chromatography, microcoulometry, capillary gas chromatography combined with a pulsed flame photometric detector （GC-PFPD）, FT-IR and X-ray diffraction. The results show that the reaction can proceed at 450-550 ℃ to produce Mg2, S, C, H2S, CO2, and a series of organic sulfur compounds such as mercaptans, sulfoethers and thiophenes as the main products. The reaction kinetics was studied. According to the reaction model, the calculated activation energy of the reaction is 54.88 kJ/moi.