石油化工中的很多催化反应,如加氢、异构化、烷基化、聚合、水合、脱水等,都在酸碱活性中心上进行。因此,固体表面酸碱活性中心的测定,具有重要的理论意义和实践意义。固体表面酸碱活性中心的测定方法很多,其中重要的有酸碱滴定法、气体吸附法、光谱法、热谱法、磁共振法和色谱法等。目前,最常用的方法是酸碱滴定法。酸碱滴定法又分 Many catalytic reactions in the petrochemical industry, such as hydrogenation, isomerization, alkylation, polymerization, hydration, dehydration, etc., are carried out in the acid-base active center. Therefore, the determination of acid-base active center of solid surface has important theoretical and practical significance. There are many methods for determination of acid-base active sites on solid surface, including acid-base titration, gas adsorption, spectroscopy, thermometry, magnetic resonance and chromatography. Currently, the most commonly used method is acid-base titration. Acid-base titration is divided