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采用浸渍法制备了催化剂Ni/Ce0.5La0.5O2/Al2O3和Ni/Al2O3,运用BET和XRD对催化剂进行了表征,在石英管反应器上考察了催化剂对模拟生物质气化气(CO,H2,CH4和NH3的体积分数为3%,2%,1%和0.05%,N2为平衡气)的催化燃烧活性.结果表明,Ni和Ce以氧化物形式存在,没有检测到La的氧化物的衍射峰.虽然Ni/Ce0.5La0.5O2/Al2O3比表面积小于Ni/Al2O3,但10 Ni/Ce0.5La0.5O2/Al2O3催化剂活性优于10 Ni/Al2O3,且Ni/Ce0.5La0.5O2/Al2O3作用时燃烧产物中燃料型NOx体积分数大于Ni/Al2O3.
The catalysts Ni / Ce0.5La0.5O2 / Al2O3 and Ni / Al2O3 were prepared by impregnation method. The catalysts were characterized by BET and XRD. The effect of catalyst on the gasification of simulated biomass gas (CO, H2 , CH4 and NH3 volume fraction of 3%, 2%, 1% and 0.05%, N2 equilibrium gas) catalytic combustion activity results show that Ni and Ce exist as oxides, did not detect the oxide of La Although the specific surface area of Ni / Ce0.5La0.5O2 / Al2O3 is smaller than that of Ni / Al2O3, the catalytic activity of 10 Ni / Ce0.5La0.5O2 / Al2O3 is better than that of 10 Ni / Al2O3, and the Ni / Ce0.5La0.5O2 / Al2O3 When the role of combustion products in the NOx-based fuel volume fraction greater than Ni / Al2O3.