用硼酸三甲酯对Al2O3路易斯碱性进行红外光谱定量研究
JOURNAL OF NANHUA UNIVERSITY(SCIENCE AND TECHNOLOGY)(2005)
Abstract
采用硼酸三甲酯作为探针分子对Al2O3的路易斯碱性进行了红外光谱定量研究.Al2O3对硼酸三甲酯的吸附使硼酸三甲酯在1 360 cm-1的谱峰分裂成1 409 cm-1和1 287 cm-1两个峰,1 036 cm-1的谱峰紫移到1 067 cm-1.低压下吸收峰高与硼酸三甲酯压力成正比,与Al2O3含量成正比.结果表明Al2O3有一定的路易斯碱强度,与硼酸三甲酯之间的吸附是单分子层化学吸附.
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Key words
al_2o_3,lewis base property,infrared spectroscopic quantitative study
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