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通过对一系列添加不同助剂的VPO催化剂的研究,揭示了助剂对正丁烷选择性氧化制顺酐的促进作用.各种助剂的加入可明显提高催化剂的活性和选择性,将反应活性和选择性与催化表面结构相关联发现,比表面积和表面氧化还原中心的增加导致活性的提高,可是,高选择性却与催化剂具有适宜的表面酸中心有关.
A series of VPO catalysts with different additives were added to reveal the promoting effect of additives on the selective oxidation of n-butane to maleic anhydride.The addition of various additives can obviously improve the activity and selectivity of the catalyst, Activity and selectivity associated with the catalytic surface structure. It was found that the increase of specific surface area and surface redox center resulted in the increase of activity. However, the high selectivity was related to the catalyst with suitable surface acid sites.