A convenient, efficient and practical procedure for the synthesis of 1-amidoalkyl 2-naphthols is described by condensation of aromatic aldehydes with amides and 2-naphthol in the presence of P2O5/SiO2 as an efficient catalyst. Moreover, in the present of this catalyst, the synthesis of 14-aryl or alkyl-14H-dibenzo[a,j]xanthenes is studied by co...

The application of analytical transmission electron microscopy in characterisations of catalytic materials is presented by studying the mechanically activated vanadium pentoxide V2O5. Local morphology and lattice distortion are studied by TEM while the oxidation states are determined by EELS. The mechanical activation can be described as a two -stage process: crushing of large crystals into sma...

This paper reports a development of microfluidic devices integrating an ion selective-field effect transistor (ISFET) sensor with a tantalum pentoxide as a sensing surface to detect protons. To attain high sensitivity in flow injection analysis, a novel on-line preconcentration of ionic analytes was demonstrated by integrating a pair of metal electrodes on a microchannel. In our proposed method...