中文摘要：

采用热重、差热分析、FT-IR和X-射线衍射分析手段，对催化加氢催化剂MoS2的前躯物（NH4）2MoS4分段热分解和晶体结构等进行了热分解机理研究，还试验了催化热解性能。四硫代钼酸铵的热分解与热处理温度密切相关，350℃以上开始分解为具有催化活性的硫化钼。利用催化剂前躯物浸溃的煤样品，在氢气氛中550℃进行催化加氢热裂解实验。显示出其催化性能。

英文摘要：

The mechanism of the stepwise thermal decomposition and the crystal structure of ammonium tetrathiomolybdate （ATTM） ,the precursor of a catalyst in hydropyrolysis,was stud-ied with thermo-gravimetric analysis （TG）, FT-IR, differential thermal analysis（DTA） and X-ray diffraction（XRD） techniques, A series of intermediates of ammonium tetrathiomolybdate were identified during the course of heating. The results indicate that there is a close correlation between thermal decomposition and temperature, and ammonium tetrathiomolybdate is decomposed to form the catalyst of MoS2 at 350℃ in the hydrogen atmosphere. The catalyst performance is displayed with catalytic hydroprelysis of impregnated coal at 550℃.