Palladium-ceramic composite membranes were prepard on porous α-Al2O3 supports by electroles plating. A Novesl hydrothermal method was used to control the sytemic pressure for the fabrication of palladium membrane. The deposited palladium membranes wree investigated using X-ray diffraction, scanning electronmicroscopy and a gas permeatin test. The pore sizeddecreases of palladium deposited hydrothermally and convetionally, is 0.44 and 0.25μm, respectively.

On the basis of hydrothermal synthesis of perovskite-type BaZro3, BaZr1-xMxO3-α (M=Al, Ga, In, x≤0.20) series, solidelectrolytes were prepared. The phase, particle size and dopant content of thew product wrer characterized by the techniques such as XRD, SEM, IR, 27 Al-MASNMR and chemical analyses. The results indicated that the phase corresponds to cubic perovskite-type BaZrO3, the product has a particle size in the range 2 to 7μm with some degree of crystal twin. Moreover, M3+ (M=Al, Ga, in x≤0.20) as the dopant can nearly enter the product quantitatively. When Al is the dopant, it is observed that prat of the Al3+ ions hsow four-coordination in the range x≥010.

Gelcasting has been developed as a novel ceramic forming method for complex-shaped advaned materials of mear-net-shape. In this work, the gelcastingprocess has been further developed to fabricsate porous single-and multi-component ceramics. Porous multi-component ceramics were obtained from gelcast bodyof prectusorsby a reaction-sintering process. Large α-Al2O3 powders with a d50 value of 21.12 μm and mixedprecusors were used to prepare porous α-Al2O3 and La0.6 Sr0.4 Co0.8 Fe0.2O3-δ ceramics, respectively. The experimental results presented here demonstrate the utility of the gelcasting process for fabricating practically useful porous ceramics.

Two novel complexes, Cd(HTMA)(NC5H5)2·0.5CH3OH·0.5DMF (1) AND Cd (HTMA)·2H2o(2), of cadmium (II)-trimesates are obtained from slow vapor diffusion and urea hydrolysis, respectively. The Cd (II) centers in the two complexesare bridged by three separete HTMA3-ligands using a same coordination fashion, which contains one monodentate andtwo chelting bidentate carboxyl grousps to form the berringbone-like motif. The berringbone-likemotif is further interlinked to construct the two-dimensional Cd(II)-HTMA layer, which is stacked by mutual π-stacking of pyridines for 1 and by hydrogen bond of waters for 2. Thermal stabilltiews of the two complexes wree invstigated andthe results indicated that Cd(II)-TMA layers in the two complexes are stablestill upon 190℃.

Measurement of the Mossbauer effect of the 37.2 ke Vγ transition of 121 Sb as well as magneticmeasurements have been performed to study the structure change near the magnetic-transition temerature in the perovskite compound Ba(In0.5Sb0.5)O3, which was synthesized by the hydrothermal method for the first time. The Mossbauer isomershift falls in the region of the Sb(V) and reflects some hybrdized-orbital behavior. The major component of the quadrupole coupling tensor (eQVzz) changes with temperature, while the asymmetryparameter (η) is equal to zero. This implies that the structuree change occurs and that the central antiomony cations move relative to the surrounding oxygen ions along the Z-axis of the crystal.