测定 Cu－Al－O复合物催化剂表面酸碱性的微量热法OA北大核心CSCD
Quantitative Determination of Acidity and Basicity on Surface of Cu－ Al－ O Composite Catalyzer by Microcalorimetric Method
以NH3－CO2作探针分子,采用微量热法测定Cu－Al－O复合物催化剂的表面酸碱性。实验结果表明,样品的酸中心强度顺序是:0.5CAO>CAO>2CAO（0.5CAO、CAO、2CAO分别表示复合物中n（Cu）/n（Al）为0.5、1和2）,而碱中心强度顺序是:0.5CAO。该法测定Cu－Al－O复合物表面酸碱中心的强度和密度,不受样品颜色限制、操作方便、准确度高,是用于测定固体催化剂表面酸碱性的一种较理想的定量方法。
Acid and base sites on the surface of Cu-Al-O composite oxides catalyzer were measured by microcalorimetry with ammonia and carbon dioxide as absorbed probe molecules. The results indicated that the acidity strength sequence was 0.5 CAO>CAO>2 CAO(0.5 CAO, CAO, 2 CAO repressed n(Cu)/n(Al) of 0.5, 1, 2 in the catalyzer, respectively), whereas basicity strength order was 0.5 CAO
李大塘;龙云飞;刘胜利;郭军
湘潭师范学院化学系,湘潭师范学院化学系,湘潭师范学院化学系,湘潭师范学院化学系,
化学化工
Cu－Al－O复合物表面性质酸度碱度微量热法
《分析测试学报》 2001 (3)
12-14,3
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