WebMay 1, 2013 · The role of TiO 2 as an additive in the Pt/WO 3-ZrO 2 catalyst system over the catalytic activity in the hydroisomerization of n-hexane was investigated. The Pt/WO 3-ZrO 2-TiO 2 catalysts were synthesized by two steps: the first step consisted in the WO x-ZrO 2-TiO 2 mixed oxides synthesis by the coprecipitation technique, and in a second step the … WebNov 1, 1994 · Properties of the ZSM-5 zeolite modified with VO 2+ ions in a one-step exchange reaction in water medium have been investigated. Physicochemical characterization (chemical analysis, XRD, MAS n.m.r., e.s.r.) shows that during the preparation the ZSM-5 zeolite structure remains preserved and the vanadyl ions enter …
B酸和L酸区别 - 百度文库
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: … ms work comp verification
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Web百度百科是一部内容开放、自由的网络百科全书,旨在创造一个涵盖所有领域知识,服务所有互联网用户的中文知识性百科全书。在这里你可以参与词条编辑,分享贡献你的知识。 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 ... 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 make my own icons