Zhang Qing, He Zhen-Liang, Li Jin-Wei, Zhan Ying-Ying, Lin Xing-Yi, Zheng Qi
National Engineering Research Center of Chemical Fertilizer Catalyst at Fuzhou University, Fuzhou 350002, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2008 Apr;28(4):926-9.
For Au-ceria catalysts prepared by deposition-precipitation method, the catalytic performance of water gas shift reaction was studied with different La loadings. In the complete doping range, ceria retains with its cubic fluorite structures. XRD, HRTEM and UV-Vis-DRS, studies showed that La doping can improve the activity of Au-ceria catalyst by stabilizing ceria and modifying its morphology. In addition, the test of catalyst stability evaluation also proved, that a better stability performance of Au-ceria catalyst can be realized by appropriate La doping. The Au/CL5.0 sample with 5 at % La doping showed the best performance in WGS reaction.
对于采用沉积沉淀法制备的金-二氧化铈催化剂，研究了不同镧负载量下其水煤气变换反应的催化性能。在整个掺杂范围内，二氧化铈保持其立方萤石结构。XRD、HRTEM和UV-Vis-DRS研究表明，镧掺杂可通过稳定二氧化铈并改变其形态来提高金-二氧化铈催化剂的活性。此外，催化剂稳定性评估测试也证明，通过适当的镧掺杂可实现金-二氧化铈催化剂更好的稳定性性能。镧掺杂量为5 at%的Au/CL5.0样品在水煤气变换反应中表现出最佳性能。
