The influence of separately added 0.3 wt%, CdO, Bi2O3, BeO and SiO2 on the phase formation, microstructure, magnetic transport properties Y1Ba2Cu3O(7-$\delta$) (Y-123 or YBCO) fabricated by conventional solid state reaction method has been analyzed. results reveal a very low solubility limit for bismuth silicon in Y-123 phase, leading to precipitation phases located within intergranular regions...

This study presents the effects of different activation methods to produce activated carbon from hydrolysis lignin. Pretreatment feedstock with common mineral acids (HCL, HNO3, and H3PO4), steam rates for physical activation, chemical activating agents (ZnCl2, Na2CO3, KOH) were investigated. The pretreated biomass was carbonized in one-stage process surface characteristics, such as total pore v...