不同硫源水热合成的MoS_2催化剂的形貌和加氢脱氧活性比较研究（英文）

A comparison of MoS_2 catalysts hydrothermally synthesized from different sulfur precursors in their morphology and hydrodeoxygenation activity

分别采用硫脲、L-胱氨酸和硫磺为硫源水热合成了三种MoS_2催化剂,对其结构和形貌特征进行了表征,并以对甲酚为探针化合物,比较研究了三种MoS_2的加氢脱氧(HDO)催化活性。结果表明,硫源对MoS_2晶体结构的影响不大,但对其形貌和比表面积影响较大。与商业MoS_2相比,所制备的MoS_2催化剂都表现出更高的HDO活性;其中,以硫脲为原料合成的MoS_2具有较高的比表面积和花状结构,其催化活性最高,在300℃下进行对甲酚的HDO反应,脱氧度可达99.3%。

Three MoS2 catalysts were synthesized by a hydrothermal method using different sulfur precursors such as thiourea,Lcystine and sulfur powder; their differences in the structure,morphology,and catalytic activity in the hydrodeoxygenation（ HDO）of p-cresol were comparatively investigated. The results illustrated that the sulfur source has a significant influence on the morphology and surface area of the as-synthesized MoS2 catalysts. All the hydrothermally synthesized MoS2 catalysts show much higher activity in HDO than the commercial MoS2 sample. Among three MoS2 catalysts,the one prepared from thiourea,with a high surface area and flower-like morphology,exhibits the highest activity in HDO; over it,a deoxygenation degree of 99.3% is achieved at 300 ℃.