本文研究了 Al_2O_3和经一些渡金属氧化物改性后的 Al_2O_3催化剂对2-丁烯异构化反应的活性和选择性。试验结果表明,经少量氧化锰改性的 Al_2O_3催化剂,不仅有较高的活性,且对双键异构具有优良的选择性。反应温度高达550℃,产物中仍检测不到异丁烯。应用 TPD 技术以 NH_3和 CO_2为吸附质研究了本催化剂表面酸、碱性的改变及其对活性和选择性的影响。 In this paper, the activity and selectivity of 2-butene isomerization of Al 2 O 3 and Al 2 O 3 catalysts modified with some transition metal oxides were studied. The experimental results show that, with a small amount of manganese oxide modified Al 2 O 3 catalyst, not only higher activity, and double bond isomerization has excellent selectivity. The reaction temperature was as high as 550 ° C, and isobutene was still undetectable in the product. The effects of acidity and alkalinity on the activity and selectivity of the catalysts were studied by using TPD technology with NH_3 and CO_2 as adsorbates.