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如何理解路易斯酸碱理论? - 知乎
WebApr 30, 2015 · 较小的晶粒尺寸就意 味着更多的晶格缺陷, 必然会导致催化剂中 b 酸位 的显著下降, l 酸位的显著上升 [22][23][24]。 表 1 样品的物理结构性质 ... WebMar 30, 2024 · 五碳堂. 喜欢化学,大三,菜鸟化竞狗. 关注. 2 人 赞同了该回答. 路易斯酸性位点指能接受电子的原子等,例如氢离子,三氟化硼的硼,卤化磷的磷等。. 锰元素是过渡金属,有空轨道,可以接受电子对(不需要先打开双键),故为路易斯酸性位点。. 发布于 … how to join it\u0027s showtime zoom
Xiamen University, Xiamen (XMU) and other places - ResearchGate
WebB酸(质子酸):凡能给出质子的物质,如H+ B碱:凡能接受质子的物质,如BF3 3)电子理论 (Lewis)—— Lewis酸碱 L酸(非质子酸):凡能接受电子对的物质,如OH- L碱: … WebMay 1, 2009 · The isomerization of n-heptane over Ga 2 O 3-doped Pt/WO 3 /ZrO 2 (Pt/WGZ) in the presence of H 2 at 200 °C was studied. The incorporation of small amounts of Ga 2 O 3 into Pt/WO 3 /ZrO 2 increased the activity substantially and improved the isomerization selectivity to some extent. This was attributed to an enhancement of … WebApr 1, 2003 · The promotion effect of Al on tungstated zirconia (WZ) catalyst was studied in a butane isomerization reaction and compared with Fe-promoted catalyst (FWZ). XRD and EXAFS studies revealed an interaction between Al and WO x, whereas XANES analysis indicates that the octahedral symmetry around W sites remained unchanged.Two Al 3+ … how to join itsfunnehs server