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Effect of surface acidity/basicity on the selective hydrogenation of maleic anhydride to succinic anhydride over supported nickel catalysts
Catalysis Communications ( IF 3.7 ) Pub Date : 2018-02-21 , DOI: 10.1016/j.catcom.2018.02.016
Jingxuan Cai , Jianxin Zhu , Li Zuo , Yuchuan Fu , Jianyi Shen

The catalysts 60%Ni/Al2O3, 60%Ni/MgAlO and 60%Ni/MgO were prepared and used for the hydrogenation of maleic anhydride (MA) to succinic anhydride (SA). Characterization results showed that Ni particles were highly dispersed in the catalysts so that they possessed the high density of active Ni sites, and thus the high activities for the reaction. In particular, it was found that the surface acidity favored the conversion of MA on Ni, but was unfavorable for the selectivity to SA, while the surface basicity played the opposite role. The Ni/MgAlO exhibited the proper acidity and basicity and thus the excellent performance for the reaction.



中文翻译:

表面酸度/碱度对负载型镍催化剂上马来酸酐选择性氢化为琥珀酸酐的影响

该催化剂60%的Ni / Al的2 ö 3,60%的Ni / MgAlO和60%的Ni / MgO的制备和用于马来酸酐(MA),以琥珀酸酐(SA)的氢化。表征结果表明,Ni颗粒高度分散在催化剂中,因此它们具有高密度的活性Ni位点,因此具有高的反应活性。特别地,发现表面酸度有利于MA在Ni上的转化,但是不利于对SA的选择性,而表面碱度起相反的作用。Ni / MgAlO表现出适当的酸度和碱度,因此具有出色的反应性能。

更新日期:2018-02-21
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