摘要
本文用热重分析方法研究了煤液化油的催化加氢，系统地考察了热重分析的各种操作条件对煤液化油以及它与固体催化剂的混合样品的热重分析结果的影响，并建立了一套条件实验步骤。实验结果表明，当催化剂存在于样品中时，与不含催化剂时相比，煤液化油的失重在低于３００℃时增大，而在大于３００℃时减小；用Ｈ２作为载气时煤液化油的失重比用Ｎ２作为载气时大；催化剂的催化加氢性能与煤液化油的失重之间存在着定性的关联；催化加氢活性最高的催化剂表现出最大煤液化油失重。
Catalytic hydroprocessing of a coal-derived liquid(CDL) was studied using thermogravimetric analysis(TGA).Because of high sensitivity of the TGA instrument and complexity of the system studied.The strictly controlled operating conditions are essential to obtain reliable and comparable data,The effects of several operating parameters on TGA data of a CDL and of CDL-catalyst mixture samples were systematically investigated,and standardized experimental conditions were established.We found that when a catalyst was present,the weight loss of the CDL as a function of increasing temperature was increased at lower temperatures(<300℃) and decreased at higher temperature(>300℃) irrespective of whether the atmosphere was H2 or N2.On the other hand,a higher CDL weight loss and a lower temperature for the maximum CDL weight loss rate were observed when H2 was used as the carrier gas irrespective of whether a catalyst was present or not.Our preliminary results suggest that the catalyst most active for hydroprocessing of the CDL is the one exhibiting the greatest CDL weight loss.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1996年第3期245-250,共6页
Journal of Fuel Chemistry and Technology
关键词
加氢
热重分析法
催化
煤液化油
coal-derived liquid,hydrogenation, thermogravimetric analysis, catalysis
