图5.(a)10%CeO2-CoO纳米纤维在1000次CV循环前后的LSV极化曲线。(b)10%CeO2-CoO纳米纤维在1M KOH电解液中于1.55V下的计时电流测量。(c)OER稳定性测试后10%CeO2-CoO纳米纤维的SEM图像。(d)10%CeO2-CoO纳米纤维在OER稳定性测试前后的XRD图谱。OER稳定性测试后,10%CeO2-CoO纳米纤维的(e)Ce3d和(f)Co2p ...
The eutectic point was calculated to be at 82 ± 1.5 mol% CoO. The eutectic phases were the CeO2-rich phase (containing <5 mol% CoO) and the CoO-rich phase (containing ∼0.5 mol% CeO2). At 1580°C, the solubility of CoO in CeO2 was ∼3 mol%....
respectively. The promising catalytic behavior of mesoporous 5%CoO/CeO2as the peroxidase-like bioactive catalyst could be ascribed to its interconnected large mesopores, rich exposed surface defects and oxygen vacancies introduced by the heterojunction interface of ultrasmall CeO2and CoOnanocrystalswithin por...
CeO2-x/CoO1-x/Co双界面具有有效催化WGS反应的结构活性,其中CeO2-x小岛的存在是中间区域主要存在CoO1-x的诱因。形成的CoO1-x可以通过避免由于过强的CO-Co0结合而导致的CO中毒来优化CO活化步骤。 实验和理论结果证实了由双功能界面(包括CeO2-x/CoO1-x和CoO1-x/Co)独立贡献组成的协同氧化还原机制,其中CeO2...
碳酸二甲酯(CH3OCOOCH3)是一种低毒、环保、性能优异的化工产品。纳米CeO2催化下,CO2和CH3OH合成碳酸二甲酯的示意图如下:则下列有关叙述不正确的是(
Composite polymer electrolytes based on poly(ethylene glycol) (PEG), magnesium acetate [Mg(CH 3 COO) 2 ], and x wt% of cerium oxide (CeO 2 ) ceramic fillers (where x = 0, 5, 10, 15 and 20, respectively) have been prepared using solution casting technique. X-ray diffraction patterns...
The cross-dissolution of La, Sr, Co and Ce cations between the initial La0.6Sr0.4CoO3±δ (LSC) and CeO2 takes place and results in the modification of the initial phases. This is particularly important for the modified ceria. The lattice parameter of the modified ceria increases due to ...
H2-TPR and Raman. The catalysts were used in sulfur-resistant methanation. The effects of boron content on the structure and performances of the catalysts were investigated. The results showed that the addition of B2O3 to CoO-MoO3/CeO2-Al2O3 could improve the selectivity to CH4,but r...
3. 含B2O3的Al2O3-Fe2O3基无氟复合造渣剂的试验研究 4. ZrO2-Al2O3复合载体对镍基催化剂甲烷化性能的影响 5. CeO2对RuO2/γ-Al2O3催化剂湿式氧化降解苯酚性能的影响 6. 耐硫甲烷化中H2S浓度对MoO3/Al2O3和CoO-MoO3/Al2O3催化剂的影响 7. 新型合成气甲烷化催化剂La2O3-ZrO2-Ni/Al2O...
The results showed that the addition of B2O3 to CoO-MoO3/CeO2-Al2O3 could improve the selectivity to CH4,but reduce the selectivity to ethane and the conversion of CO. It was indicated that the addition of B2O3 was unfavorable to the dispersion of the active component molybdenum oxide ...