共搜索到3353条信息,每页显示10条信息,共336页。用时:0小时0分0秒232毫秒
in the bath (0 to 4 wt.%),as CeO2 was reduced through metallothermic reactions in the molten alloys.Based on the characterization of reaction products,the sequence of the reaction was proposed.关键......
with the trivalent rare earth Ln 3+ (Ln=Eu, Sm, Dy, Pr, Tb) ions were synthesized by solid state reactions at high temperature in air atmosphere, and their phase impurities and luminescent properties......
at environmental temperature. The composite milled for 10 h absorbed 3.16 wt.% hydrogen within 100 s at 290 K. The kinetic mechanisms of hydriding/dehydriding reactions were analyzed by using a new model......
hydroxide was studied in the work.The results showed that the presence of Ca2+ could lead to side reactions so as to reduce the conversion rate of magnesium hydroxide,and a small number of rare earth ions......
and the respective energy transfer processes were also discussed. The experimental results demonstrated that reactions at 200 oC, 24 h, and pH=6 could generate perfect ScVO4 microcrystals, which were......
transform infrared spectroscopy(FT-IR). The catalytic performance of NiFe2–xEuxO4 was evaluated for the synthesis of benzimidazoles, benzoxazoles and benzothiazoles under ultrasonic irradiation. All reactions......
-NOxefficiency of the catalyst, which has precipitated CeO2, improves by 50% owing to the simultaneous reactions of the nano CeO2 and the amorphous CeTiOx.关键词:......
activity towards the oxidative degradation of dye molecules.An excellent increase in the rate constant values of pure perovskite(LaFeO3) photocatalytic reactions is observed with the substitution of rare......
,nanoparticles,clusters or single atoms,often exhibit excellent activity and unique selectivity in many catalytic reactions benefiting from their small size,abundant unsaturated active sites,and unique......
on carbon cloth(G-NH//CC) are prepared through simple hydrothermal reactions. The resulting G-NH//CC is employed as a binder-free electrode of supercapacitors. Due to the enhanced electrical......