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研究了担载型催化剂NiO／γ－Al2O3的乙烷氧化脱氧（ODHE）性能，发现在400－500℃的考察温区内，担载型NiO较纯NiO的乙烯选择性有较大提高，保持在80％～90％之间，其中含17％Ni的样品500℃时乙烷的转化率为31％，乙烯选择性达82％．XRD、H2-TPR及原位磁测量结果表明：催化剂的活性相是与载体相互作用较小的、处于表层的微晶态NiO，NiO中非化学计量氧仍为活性氧物种．催化剂焙烧温度的提高，一方面降低了活性相中非化学计量氧量，同时加剧了NiO与载体γ－Al2O3的相互作用，二者均使活性降低．O2－TPD研究表明：与纯NiO相比，在Nio／γ－Al2O3中，其非化学计量氧的脱附温度发生变化，其中，α氧脱附温度向低温移动约50℃，而对乙烯选择性有关的β氧的脱出则向高温区移动了约200℃，正好与反应温区对应，进一步证实非化学计量氧与ODHE反应之间存在对应关系，上述结果表明那些对氧化镍还原有一定的阻碍作用，尤其阻碍镍深度还原（Ni2+→Nio）的载体对促进反应的乙烯选择性是有利的．
The oxidative deoxygenation (ODHE) performance of NiO / γ-Al2O3 supported catalysts was investigated. It was found that the selectivity of ethylene to the supported NiO was higher than that of pure NiO in the temperature range of 400-500 ℃, Between 80% and 90%, the sample containing 17% Ni had an ethane conversion of 31% and an ethylene selectivity of 82% at 500 ° C. The results of XRD, H2-TPR and in-situ magnetic measurements show that the active phase of the catalyst is in the surface layer of NiO, the non-stoichiometric oxygen of NiO is still reactive oxygen species. The increase of catalyst calcination temperature can not only reduce the non-stoichiometric amount of oxygen in the active phase but also exacerbate the interaction between NiO and the carrier γ-Al2O3, both of which decrease the activity. The results of O2-TPD show that the non-stoichiometric oxygen desorption temperature changes in Nio / γ-Al2O3 compared to pure NiO, in which the α-oxygen desorption temperature shifts to about 50 ° C at low temperature and the selectivity to ethylene Sex-related β-O release was shifted to about 200 ° C in the high temperature region, corresponding to the reaction temperature, further confirming the correspondence between non-stoichiometric Oxygen and ODHE reactions. These results indicate that those with some reductions in nickel oxide The impeding effect, in particular, the support for the nickel deep reduction (Ni2 + → Nio) is advantageous for promoting the ethylene selectivity of the reaction.