通过在化学镀镀液中添加长链巯基有机物(2-巯基苯并噻唑),利用巯基与金属钯强烈吸附的性质,使其吸附在钯膜表面,这样钯的自催化沉积仅仅发生在缺陷内部而不发生在钯膜表面,从而对含有缺陷的钯膜进行修补.对于选择性分别为720和4的M1和M2两根复合钯膜管,经过多次修补后,选择性S分别提高到2 556和3 990.经过SEM(EDS)和ZRD的分析,修补过后的钯膜表面未见硫化物、碳化物等杂质的存在和表面缺陷的存在.结果表明这种自下而上修补法是可行的.
参考文献
| [1] | Roland Dittmeyer;Volker Hollein;Kristian Daub .Membrane reactors for hydrogenation and dehydrogenation processes based ons upported palladium[J].Journal of molecular catalysis, A. Chemical,2001(1/2):135-184. |
| [2] | Ma Y H;Guazzone F .Metallic membranes for the separation of hydrogen at high temperatures[J].Ann Claim -Sci Mat,2007,32:179-195. |
| [3] | Uemiya S;Sato N;Ando H .Separation of hydrogen through palladium thin film supported on a porous glass tube[J].Journal of Membrane Science,1991,56:303-313. |
| [4] | Mardilovich I P;Engwall E;MaYH .Dependence of hydrogen flux on the pore size and plating surface topology of asyrrgnetric Pd-porous stainless steel membranes[J].De-salination,2002,144:85-89. |
| [5] | 徐恒泳;侯守福;李文钊 等.一种复合金属钯膜或合金钯膜及其制备方法[P].CN Pat:200410021025.6,2005-07-20. |
| [6] | Li A;Liang W;Hughes R .Repot of a Pd/α-AI2O3 composite membrane containing defects[J].Separation and Purification Technology,1999,15:113-119. |
| [7] | Goh WL;Tan KT .The use of electroless copper seed in electrochemical deposited copper interconnect[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2004(0):275-278. |
| [8] | Li H;Goldbach A;Li W;Xu H .PdC formation in ultra -thin Pd membranes during separation of H2/CO mixtttres[J].Journal of Membrane Science,2007,299:130-137. |
| [9] | JCPDS 46-1043.Palladium[S]. |
| [10] | Shu J;Grandjean B;Neste V .Catalytic palladiumbased membrane reactors:a review[J].Canadian Journal of Chemical Engineering,1991,69:1036-1060. |
| [11] | Kulprathipanja A;Alptekin GO;Falconer JL;Way JD .Pd and Pd-Cu membranes: inhibition of H-2 permeation by H2S[J].Journal of Membrane Science,2005(1/2):49-62. |
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