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渍的煤样品,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。
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℃.
出处
《化学试剂》
CAS
CSCD
北大核心
2006年第2期86-88,103,共4页
Chemical Reagents
基金
国家自然科学基金(40472076)资助项目
北京市教委共建项目(XK:114140479)资助
关键词
催化剂前躯物
四硫代钼酸铵
催化加氯热解
浸渍
表征
catalyst preparation
ammonium tetrathiomolybdate
catalytic hydropyrolysis
impregnation
characterization
