SnCl2 was replaced with TiCl3 as the sensitization agent, and the effects of the TiCl3/PdCl2 activation on the membrane fabrication and performance were investigated. The membrane surface and cross-section morphologies were characterized by SEM and metallographic microscope. The membrane permeability, selectivity and high-temperature stability were tested, and the influences of the TiCl3/PdCl2 and SnCl2/PdCl2 treatments on the palladium deposition were also studied. It could be concluded that the TiCl3/PdCl2 treatment successfully activated the porous ceramic surface as well and improved the membrane performances. Compared with the SnCl2/PdCl2 method, the TiCl3/PdCl2 treatment facilitated the membrane formation and the tin contamination to the membrane was avoided. The TiCl3/PdCl2 technique was an ideal alternative method to the SnCl2/PdCl2 method.%以TiCl3取代SnCl2作为敏化剂,考察TiCl3/PdCl2活化法对Pd膜制备及性能的影响.所制备Pd膜的表面与断面形貌采用SEM与金相显微镜表征,测试膜的透氢性、选择性以及高温稳定性,比较了TiCl3/PdCl2与SnCl2/PdCl2 2种活化方法对Pd沉积速率的影响.结果表明:TiCl3/PdCl2活化法同样能够在多孔陶瓷基体表面形成活性催化层,并最终成功获得高性能的Pd膜.相对而言,TiCl3/PdCl2活化法更有利于Pd膜的快速形成,而且彻底避免了Sn对Pd膜的污染,有望成为SnCl2/PdCl2活化法的一种理想替代方法.
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