本研究分兩部分，第一部分探討奈米鈀金屬之製備，製備方法可分為兩種: 一為由相同金屬前驅物氯化鈀 (PdCl2) 藉由調整其酸鹼值和氯離子濃度，配製出不同之鈀離子，於相同還原條件下，其還原情況可分為兩類。一類是鈀離子還原後才被十二烷基硫酸酯鈉 (SDS, sodium dodecyl sulfate) 形成之微胞所包圍，此類鈀金屬粒徑大小皆 10 nm。另一類是鈀離子先被 SDS 微胞所保護，再被還原劑所還原後，可得到粒徑為4 nm之鈀粒子。
二為利用不同電荷之界面活性劑，於相同之金屬前驅物 (PdCl42-)加入聯氨水溶液還原成鈀粒子後(8~13 nm)，電荷不同之界面活性劑並未造成粒徑大小差異。

第二部分為無電鍍法製備緻密性鈀膜時，以奈米鈀粒子來做活化。傳統上是以錫/鈀水溶液活化，得到的鈀膜容易破裂且有雜質殘留於鈀膜中，而將奈米鈀顆粒取代傳統錫/鈀活化，經無電鍍後，披覆於多孔性不鏽鋼管及陶瓷管表面的鈀膜不易剝落且相當緻密。
本研究製備之鈀複合膜(多孔性不鏽鋼管基材)厚度小於10 μm，於兩端壓差為20 psi下，具有高氫氣流量 (~ 0.1 mol/m2•s)，且重複操作10次氫氣/氮氣選擇率循環後，其選擇率仍維持高達7500以上。

In the first part of this thesis, the preparation of Pd nanoparticles is discussed. Various Pd complexes were obtained by adjusting pH value and Cl- concentration of reactants mixtures, and using PdCl2 as Pd metal precursor. The Pd species were either capped by the micelles of surfactant, then reduced to Pd metal of small particle size, or reduced before capped by micelles of surfactants to produce Pd metal nanoparticles of large size. The solutions of PdCl42- complex in various surfactants was mixed with N2H4(aq) to produce Pd nanoparticles of size 8-13 nm.

In the second part, Pd nanoparticles were applied on the activation of electroless plating to produce Pd membrane instead of SnCl2/PdCl2 solution. The resulting Pd/PSS composite filters (<10 µm in thickness) has a high hydrogen flux (0.1 mol/m2□s) at the pressure difference of 20 psi, and the H2/N2 selectivity of above 7500 at 350ºC. This Pd membrane would have high potential for the application on the purification of hydrogen.

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