兰州大学学报(自然科学版)
蘭州大學學報(自然科學版)
란주대학학보(자연과학판)
JOURNAL OF LANZHOU UNIVERSITY
2001年
1期
51-58
,共8页
王秋莹%翟宇恺%李轶%晁自胜%杨保平%罗继中%阎子峰%菅盘铭%王水菊%曾金龙
王鞦瑩%翟宇愷%李軼%晁自勝%楊保平%囉繼中%閻子峰%菅盤銘%王水菊%曾金龍
왕추형%적우개%리질%조자성%양보평%라계중%염자봉%관반명%왕수국%증금룡
Ni/γ- Al2O3 催化 剂%Ni-丙烯过渡态配位化合物%结合能(Eb)%Ni-O(四面体) [Ni-O(T )]%Ni-O(八面体)[Ni-O(O)]
Ni/γ- Al2O3 催化 劑%Ni-丙烯過渡態配位化閤物%結閤能(Eb)%Ni-O(四麵體) [Ni-O(T )]%Ni-O(八麵體)[Ni-O(O)]
Ni/γ- Al2O3 최화 제%Ni-병희과도태배위화합물%결합능(Eb)%Ni-O(사면체) [Ni-O(T )]%Ni-O(팔면체)[Ni-O(O)]
用XPS研究了Ni负载量对催化剂表面结构的影响.选择负载量为8%的Ni/γ-Al2O3催化剂，解迭出Ni2p3/2XPS，Eb(NiO)=855.2eV,Eb[Ni-O(T)]=856.5eV,Eb[Ni-O(O)]=857.9eV；测定了不同温度通H2还原后吸附丙烯及不同温度吸附丙烯后Ni2p3/2及C1sXPS的变化.对照EPR及UV-DRS结果，推断丙烯在反应过程中形成[Ni(C3H6)n](1-δ)+及[Ni(C3H6)n](2-δ)+(n=1,2)过渡态配位化合物.
用XPS研究瞭Ni負載量對催化劑錶麵結構的影響.選擇負載量為8%的Ni/γ-Al2O3催化劑，解迭齣Ni2p3/2XPS，Eb(NiO)=855.2eV,Eb[Ni-O(T)]=856.5eV,Eb[Ni-O(O)]=857.9eV；測定瞭不同溫度通H2還原後吸附丙烯及不同溫度吸附丙烯後Ni2p3/2及C1sXPS的變化.對照EPR及UV-DRS結果，推斷丙烯在反應過程中形成[Ni(C3H6)n](1-δ)+及[Ni(C3H6)n](2-δ)+(n=1,2)過渡態配位化閤物.
용XPS연구료Ni부재량대최화제표면결구적영향.선택부재량위8%적Ni/γ-Al2O3최화제，해질출Ni2p3/2XPS，Eb(NiO)=855.2eV,Eb[Ni-O(T)]=856.5eV,Eb[Ni-O(O)]=857.9eV；측정료불동온도통H2환원후흡부병희급불동온도흡부병희후Ni2p3/2급C1sXPS적변화.대조EPR급UV-DRS결과，추단병희재반응과정중형성[Ni(C3H6)n](1-δ)+급[Ni(C3H6)n](2-δ)+(n=1,2)과도태배위화합물.
By using the XPS method, the effects of nickel weight loading assurface structure of NiSO4/γ-Al2O3 catalysts have been examined. For 8% Ni/γ- Al2O3 cata lysts,the XPS peak is deconvoluted to three nickel species: The Eb(NiO )=855.2 eV, Eb[Ni-O(T)]=856.5 eV, Eb[Ni-O(O)]=857.9 eV. The XPS changes have been determined for catalysts having adsorbed H2 or propylene at different temperature.. The X PS results in conjunction with the EPR and UV-DRS resulted. Shown that the prop y lene adsorbed on Ni/γ-Al2O3 catalysts results showed in the formation of n icke l-propylene complex such as [Ni(C3H6)n ](1-δ)+ and [ Ni(C3H6)n](2-δ)+.
