研究了具有不同酸碱中心的催化剂对异丙醇脱水反应活性及选择性的影响,结果表明:催化剂表面有合适的酸碱强度和H_(o,max)值,能引起高的脱水活性和选择性。红外吸附态证实:在接近反应状态下,催化剂表面出现了—CH_2结构吸附,这表明反应物的碱基(OH基)与催化剂表面酸中心作用的同时,酸基(反应物的β-H)与催化剂表面碱作用,催化剂上这种酸碱活性中心协同作用结果使异丙醇脱水生成丙烯的过程很可能以协同机理方式进行。 The effects of catalysts with different acid-base centers on the dehydration reactivity and selectivity of isopropanol were studied. The results show that the catalyst has suitable acid-base strength and H_ (o, max) value, which can cause high dehydration activity and selectivity Sex. Infrared adsorption state confirmed: near the reaction state, -CH2 structure appears on the surface of the catalyst adsorption, indicating that the reaction of the base (OH group) and the catalyst surface acid center at the same time, the acid (β-H reactants) Alkali effect with the catalyst surface, the catalyst on the synergistic effect of this acid-base activity isopropanol dehydration of propylene to the process is likely to proceed in a synergistic manner.