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用IR和XRD法研究了Mo-Te氧化物催化剂结构与组成的关系。结果表明,该催化剂由MoO_3和Te_2MoO_7组成,后者随Te加入量的增加而增加。考察了异丁烯在该催化剂上的脉冲反应活性,发现异丁烯转化率和甲基丙烯醛的选择性与Te_2MoO_7组分有关,反应可能包含两种不同的氧物种。
The relationship between the structure and composition of Mo-Te oxide catalysts was investigated by IR and XRD. The results show that the catalyst consists of MoO_3 and Te_2MoO_7, the latter increases with the addition of Te. The impulse reaction activity of isobutylene on this catalyst was investigated. It was found that the conversion of isobutylene and the selectivity of methacrolein were related to the composition of Te 2 MoO 7, and the reaction may contain two different oxygen species.