采用H₂-TPD表征加氢改质催化剂上氢溢流效应,并考察氢溢流效应与柴油加氢改质催化剂性能的关联性,研究分子筛含量对加氢改质催化剂性能的影响和加氢改质催化剂的吸附-脱附氢性能,结果表明,分子筛不仅是催化剂的酸中心,而且对催化剂的加氢-脱氢性能有影响,催化剂的吸附氢量与柴油十六烷值提高值有良好的对应关系,说明催化剂的吸附氢量越高,其加氢性能越好,表明加氢功能与酸功能的良好匹配能够有效改善催化剂的加氢性能,金属组分能够决定加氢性能,加氢性能也会受分子筛的影响。

The hydrogen spillover effects of hydroupgrading catalysts were characterized by H₂-TPD technique. The relationship between the hydrogen spillover and the performance of hydroupgrading catalysts, the influence of molecular sieve contents, and adsorption-desorption performance of the hydroupgrading catalysts were investigated. The results showed that molecular sieve was not only the acidic sites of the catalyst, but had the influence on the hydrogenation-dehydrogenation performance of the catalyst; the greater the amount of hydrogen adsorption of the catalyst,the higher the incremental value of the cetane number of the diesel product,which indicated that the hydrogenation performance of the catalyst was better. The results confirmed that mutual synergy of acid function and hydrogenation function would effectively improve the performance of hydroupgrading catalyst. The hydrogenation performance of hydroupgrading catalyst was determined not only by active metals, but also by molecular sieves.