نتایج جستجو برای: low temperature synthesis

تعداد نتایج: 1923025  

Journal: :Ceramics International 2021

Bismuth titanate is a lead-free piezoelectric ceramic with outstanding properties that strictly depend on the composition and microstructure. However, bismuth-based materials are difficult to synthesize due bismuth volatilisation causes secondary phases stoichiometry deviations. In this work, we propose low-temperature chemical route, i.e. modified amorphous citrate method, allows reduction of ...

Abbas Ali Khodadadi Ahmad Tavasoli, Ali Karimi Mohammad Ali Mousavian Yadollah Mortazavi

Accelerated deactivation of Co/Al2O3 catalysts in Fischer-Tropsch synthesis and the effect of Re and Ru as the catalytic promoters are reported. 15wt% Co/Al2O3 catalyst and 1wt% Ru and 1.4wt% Re  promoted cobalt catalysts have been formulated and extensively characterized. The deactivation of the unpromoted cobalt catalyst and those promoted with ...

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