用常规 Ｔ Ｇ Ａ（程序升温热重分析）法间接表征了催化剂 Ｃａ Ｔｉ０．９ Ｌｉ０．１ Ｏ３δ晶格中的氧空位，关联了氧空位、可活动氧量与催化剂的乙烷氧化脱氢（ Ｏ Ｄ Ｈ Ｅ）反应的催化性能，提出了乙烷在该类催化剂上氧化脱氢的选择性氧物种为 ８７３～１０２３ Ｋ 的温度范围内脱附的所谓可活动氧（ Ｏ－ ， Ｏ２－ ， Ｏ２－２ 简写为 Ｏδ）．利用 Ｏ２ Ｔ Ｐ Ｄ Ｍ Ｓ鉴定了 Ｔ Ｇ Ａ 结果，证明该法简便、实用、可靠． Oxygen vacancies in Ca Ti0.9 Li0.1 O3δ catalyst lattice were indirectly characterized by conventional T G A (programmed thermal gravimetric analysis) method, and related to oxygen vacancies, the available oxygen content and the ethane oxidation of the catalyst Hydrogen (O D H E) reaction of the catalytic performance of ethane proposed on this type of catalyst for the oxidative dehydrogenation of selective oxygen species in the range of 873 ~ 1023 K desorption of so-called movable oxygen (O, O2 -, O2-2 abbreviated as Oδ ). The results of T G A were identified by using O2T P DM S, which proved that the method is simple, practical and reliable.