镍镧钾催化剂用于煤油蒸汽转化制氢  

Hydrogen Production by Steam Reforming of Kerosene over Ni-La-K Catalyst

作　　者：接家振[1] 张守臣[1] 于兴河[1] 陶智[2] 

机构地区：[1]大连理工大学化工学院,辽宁大连116012 [2]北京航空航天大学能源与动力工程学院,北京100083

出　　处：《石油化工》2008年第9期873-877,共5页Petrochemical Technology

基　　金：武器装备预研基金项目(51459030102JW0901)

摘　　要：以堇青石为载体、La_2O_3和 K_2O 为助剂,制备了负载型 Ni 催化剂;采用热重-微商热重、X 射线衍射和扫描电子显微镜等方法对催化剂进行了表征,在固定床反应器内对催化剂催化煤油蒸汽转化制氰的性能进行了评价,研究了添加 K_2O 助剂、催化剂的焙烧温度和反应温度对催化剂活性和稳定性的影响。实验结果表明,添加 K_2O 助剂后,催化剂的活性、产物选择性和抗积碳性能都有所提高;焙烧温度影响催化剂的性能,在773 K 下焙烧的催化剂活性最佳,该催化剂在873 K、气态空速2300 h^(-1)、常压、煤油流量1 mL/h、n(H_2O):n(C)约为3.5的反应条件下,具有最佳的反应性能,并且催化剂的抗积碳性能良好。Ni catalysts supported on cordierite with La2O3 and K2O as promoters were prepared. Activities of the catalysts in steam reforming of kerosene for hydrogen production were evaluated in a fixed-bed reactor. The catalysts were characterized by means of TG-DTG, XRD and SEM. Influences of addition of K2O promoter, calcination temperature and reaction temperature on activity and stability of catalysts were investigated. Activity of catalyst, selectivities to products and capability of carbon antideposition were improved after addition of promoter K2O. Calcination temperature influences greatly catalyst activity. Under optimal conditions：calcination temperature 773 K, GHSV 2 300 h^-1, kerosene flow rate 1 mL/h,n（ H2O） ： n（C） about 3.5 ,atmospheric pressure and reaction temperature 873 K, activity, stability and resistance to coke deposition of the catalyst is promising.

关 键 词：煤油蒸汽转化 制氢 堇青石 镍 镧 钾 催化剂 

分 类 号：TQ426.82[化学工程]