【作者】 张蕾；

【导师】 舒新前；

【作者基本信息】 中国矿业大学（北京） ， 环境工程， 2009， 博士

【摘要】 本文主要研究了金属氧化物负载型催化剂对煤催化热解制备氢气的影响。利用γ-Al203为载体,选用不同的金属硝酸盐作为浸渍液,采用等体积浸渍法制备了金属和双金属氧化物负载型催化剂。分别选取了催化效果较好的NiO/γ-Al2O3单金属氧化物催化剂和Ag2O-Co3O4/γ-Al203双金属氧化物催化剂为例,通过条件实验确定了NiO/γ-Al2O3和Ag2O-Co3O4/γ-Al203制备的最佳工艺条件,应用XRD、XPS、BET、SEM、TPR等现代测试手段对催化剂的结构和性能进行了表征。结果表明：NiO／Y-Al2O3催化剂最佳的制备条件为Ni的负载量为10%、焙烧温度为450℃,焙烧时间为5小时；Ag2O-Co3O/γ-Al2O3最佳的制备条件为Ag的负载量为8%、焙烧温度为450℃、焙烧时间为4小时,Co的负载量为8%、焙烧温度为450℃、焙烧时间为4小时。实验研究表明,NiO／Y-Al203单金属氧化物催化剂和Ag2O-Co3O4/γ-Al2O3双金属氧化物催化剂对煤热解催化制备氢气有很高的催化活性,是一种优良的煤制氢催化剂。更多还原

【Abstract】 The paper mainly focuses on the study of the effect of metal oxide supported catalysts on hydrogen production from coal pyrolysis. Using y-Al2O3 as carrier and diverse metal nitrates as impregnation solutions, metal oxide supported catalysts and bimetal oxide supported catalysts were prepared by the method of equivalent volume impregnation. NiO/γ-Al2O3 and Ag2O-Co3O4/γ-Al2O3 catalyst was selected as an example and via diverse conditional tests. Furthermore, the optimal conditions of the NiO/γ-Al2O3 and Ag2O-Co3O4/γ-Al2O3 were confirmed. Several kinds of modern advanced testing measures were conducted to identify the structure and performance of the catalysts such as XRD、XPS、BET、SEM、TPR. The results showed that the optimal condition of preparation about NiO/γ-Al2O3 and Ag2O-Co3O4/γ-Al2O3 are as follows:The load of Ni is 10%, calcination temperature is 450℃, calcination time is 5h; the load of Ag is 8%, calcination temperature is 450℃, calcination time is 4h; the load of cobalt is 8%, calcination temperature is 450℃, calcination time is 4h. The study of the experiment showed that, NiO/γ-Al2O3 and Ag2O-Co3O4/γ-Al2O3 supported catalysts have pretty high catalytic activities for making hydrogen from coal prolysis. Thus, NiO/γ-Al2O3 and Ag2O-Co3O4/γ-Al2O3 are confirmed as the excellent catalysts for making hydrogen production.更多还原