To calculate the oxidation numbers for C3H6C3H8, count the number of atoms, draw the lewis structure by adding bonds, assign electrons from each bond, and count the number of electrons assigned to each atom. Count Atoms Use the chemical formula, C3H6C3H8, to count the number of atoms of ea...
UV鄄vis 结果表明,催化剂的脱硝活性与铁氧低聚物种 Fex Oy 的含量有关,Py鄄FTIR 结果表明,催化剂表面同时存在 Lewis 酸和 Br覬nsted 酸,Fe3+ 负载到柱撑黏土中能够显著增加 Lewis 酸 的含量,Lewis 酸是影响催化剂脱硝活性的影响因素之一. H2 鄄TPR 表征表明,催化剂在 400 益 左右有较强的还原能力,催化 ...
The Lewis acid sites could be changed with the transformation of the crystalline structure from the mixed oxides of MgO and Al2O3 to spinel phase. It is demonstrated that Lewis acid sites play an important role in determining the catalytic performance of SCR by C3H6 over calcined hydrotalcite ...
Texture/structureNO + O 2 + C 3H 6-FTIRAdsorption of NO, O 2 and C 3H 6 on the MCM-41 matrices with Nb and Zr loaded with Pt has been studied by the FTIR spectroscopy to characterize these materials as catalysts in the selective reduction of NO with propene. Two types of the ...
The Lewis acid sites could be changed with the transformation of the crystalline structure from the mixed oxides of MgO and Al2O3 to spinel phase. It is demonstrated that Lewis acid sites play an important role in determining the catalytic performance of \\{SCR\\} by \\{C3H6\\} over ...
The surface acidity analysis by Py-FTIR indicated that Lewis acid and Brnsted acid existed simultaneously and Ag enhanced the stability of Brnsted acid.doi:10.1016/S1872-5813(19)30055-6Xian-wei ZHANGYa-xin SUJiang-hao CHENGRui LINHao ZHOU...
Lewis acid is one of the influencing factors on the denitrification activity of the catalyst. H2-TPR indicates that the catalyst has a strong reduction ability at about 400掳C, and reduction ability of the catalyst is mainly represented by the reduction of Fe3+鈫扚e2+....
The Ti/clay ratio and calcination temperature led to an effect on the TiO2 crystallites, further influencing the structure of TiO2 pillared clay. Metal oxides (TiO2, Fe2O3) were well-dispersed on these catalysts. An appropriate Ti/clay ratio obviously promoted the amount of Lewis acid, which...