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分子筛表面不仅具有酸性中心,而且还存在着碱性中心。本文用CO_2作为吸附质,以程序升温热脱附的技术测量了一系列各种交换度的X型分子筛的碱度,并讨论了碱性中心的成因。
Molecular sieve surface not only has the acidic center, but also exists the basic center. In this paper, the alkalinity of a series of X-type molecular sieves with various degrees of exchange was measured by CO 2 as adsorbate and programmed desorption by thermal desorption. The genesis of the basic center was also discussed.