Fox Electronics Asia Ltd．推出F100 HCMOS系列小占位面积、低耗电量振荡器产品，适用于小型便携设备。该系列振荡器备有1．8V（F110系列）、2．5V（F140系列）和3．3V（F130系列）三种选择，频率范围在1．0MHz-80．0MHz之间，全部均...Fox Electronics Asia Ltd．推出F100 HCMOS系列小占位面积、低耗电量振荡器产品，适用于小型便携设备。该系列振荡器备有1．8V（F110系列）、2．5V（F140系列）和3．3V（F130系列）三种选择，频率范围在1．0MHz-80．0MHz之间，全部均采用侧高低至0．8mm、占位面积为2．0mm×1．6mm的紧凑型封装。展开更多
The effect of transition metals (Cr, Mn, Fe, Co and Ni) on the hydrogenation ofcinnamaldehyde over Pt/ZrO_2 catalysts was studied in ethanol at 343K under 2.0MPa H_2 pressure.PtCo/ZrO_2 and PtFe/ZrO_2 catalysts exhibi...The effect of transition metals (Cr, Mn, Fe, Co and Ni) on the hydrogenation ofcinnamaldehyde over Pt/ZrO_2 catalysts was studied in ethanol at 343K under 2.0MPa H_2 pressure.PtCo/ZrO_2 and PtFe/ZrO_2 catalysts exhibit high selectivity and activity of hydrogenation for C=O(93.8% at 87.3% conversion and 83.6% at 88.6% conversion, respectively), and PtNi/ZrO_2 exhibitshigh selectivity of hydrogenation for C=C (64.3% at 70.6% conversion). In the presence of traceH_2O and NaOH, over the PtNi/ZrO_2 (0.4wt%Ni) catalyst the selectivity to hydrocinnamaldehydereaches 90.6% and the conversion of cinnamaldehyde is 90.5%.展开更多
文摘Fox Electronics Asia Ltd．推出F100 HCMOS系列小占位面积、低耗电量振荡器产品，适用于小型便携设备。该系列振荡器备有1．8V（F110系列）、2．5V（F140系列）和3．3V（F130系列）三种选择，频率范围在1．0MHz-80．0MHz之间，全部均采用侧高低至0．8mm、占位面积为2．0mm×1．6mm的紧凑型封装。
文摘The effect of transition metals (Cr, Mn, Fe, Co and Ni) on the hydrogenation ofcinnamaldehyde over Pt/ZrO_2 catalysts was studied in ethanol at 343K under 2.0MPa H_2 pressure.PtCo/ZrO_2 and PtFe/ZrO_2 catalysts exhibit high selectivity and activity of hydrogenation for C=O(93.8% at 87.3% conversion and 83.6% at 88.6% conversion, respectively), and PtNi/ZrO_2 exhibitshigh selectivity of hydrogenation for C=C (64.3% at 70.6% conversion). In the presence of traceH_2O and NaOH, over the PtNi/ZrO_2 (0.4wt%Ni) catalyst the selectivity to hydrocinnamaldehydereaches 90.6% and the conversion of cinnamaldehyde is 90.5%.
