Evolved gases from AdBlue decomposition with different catalysts (Ti, Zr, Pt, SiO₂, and γ-Al₂O₃) were analyzed with a thermogravimetric analyzer coupled to a mass spectrometer (TG-MS). Kinetic parameters of AdBlue decomposition process were calculated by Kissinger–Akahira–Sunoe (KAS) and Flynn–Wall–Ozawa (FWO) methods. The results show that γ-Al₂O₃ is the best pyrolysis catalyst, and it promotes the decomposition of urea. The gaseous products (H₂O, NH₃, CHNO, CO₂) were detected by MS at different reaction stages, resulting from the decomposition of urea and the formation of intermediate products. With the KAS method, the calculated activation energies with the same fractional conversion for three stages are 133.20 ± 3.71–151.14 ± 7.78 kJ/mol, 128.93 ± 3.13–186.09 ± 3.92 kJ/mol, and 326.00 ± 17.58–465.09 ± 17.62 kJ/mol, respectively.

来自具有不同催化剂（钛，锆，铂，二氧化硅的AdBlue分解释放出的气体₂，并且在γ-Al ₂ ö ₃）具有耦合到质谱仪（TG-MS）热重分析仪进行分析。AdBlue分解过程的动力学参数通过Kissinger-Akahira-Sunoe（KAS）和Flynn-Wall-Ozawa（FWO）方法计算。结果表明，γ-Al系₂ ö ₃是最好的热解催化剂，并且它促进尿素的分解。气态产物（H ₂ O，NH ₃，CHNO，CO ₂MS是在不同反应阶段通过尿素分解和中间产物形成而检测到的。使用KAS方法，计算出的三个阶段具有相同分数转换的活化能为133.20±3.71–151.14±7.78 kJ / mol，128.93±3.13–186.09±3.92 kJ / mol和326.00±17.58–465.09±17.62 kJ /摩尔。