期刊论文

中文

光谱实验室

1004-8138

2005

22

6

1168-1171

10.3969/j.issn.1004-8138.2005.06.012

本校为第一机构

采用硼酸三甲酯(BATE)作为探针分子对MgO的路易斯碱性进行了红外光谱定量研究.MgO对硼酸三甲酯的吸附使硼酸三甲酯在1360cm-1的谱峰分裂成1410cm-1和1300cm-1两个峰,1036cm-1的谱峰紫移到1060cm-1.低压下吸收峰高与硼酸三甲酯压力成正比,与MgO含量成正比.结果表明MgO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.

The Lewis base property of MgO was studied quantitatively by infrared spectroscopy with boric acid trimethyl ester （BATE） as the molecular probe. MgO adsorbs BATE and makes the peak at 1360cm^-1 split into two peaks at 1410cm^-1 and 1300cm^-1 and shift the peak at 1036cm^-1 to 1060cm^-1. Under low pressure,the intensities of the peaks are proportional to the and to the amount of MgO. The results showed that MgO has a certain strength the adsorption of BATE on MgO is monomotecula...