کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8089707 | 1521950 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of formaldehyde on N-nitrosopiperazine formation from nitrite and piperazine in CO2 capture
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Piperazine (PZ) based amine blends are promising solvents for post-combustion CO2 capture, but PZ can form potential carcinogenic nitrosamines from nitrite. In this work, the kinetics of the reaction between nitrite and PZ to form N-nitrosopiperazine (MNPZ) was determined in 0.1-0.5â¯molâ¯Lâ1 PZ in the presence of 17-170â¯mmolâ¯Lâ1 formaldehyde at 60-135â¯Â°C. The nitrosation of PZ can be catalyzed by formaldehyde, a primary degradation product of PZ. And the reaction involving nitrite and PZ is first order in nitrite, formaldehyde, and hydronium ion. A kinetic model was established, and the activation energy is 33.6â¯Â±â¯1.8 kJâ¯molâ1 with a rate constant of 2.3â¯Ãâ¯103â¯Â±â¯0.4â¯Ãâ¯103 L2â¯molâ2â¯sâ1 at 100â¯Â°C. The kinetics will be helpful to develop strategies to reduce nitrosamine formation and accumulation in PZ based CO2 capture systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Greenhouse Gas Control - Volume 69, February 2018, Pages 36-40
Journal: International Journal of Greenhouse Gas Control - Volume 69, February 2018, Pages 36-40
نویسندگان
Yan Zhou, Yiheng Rao, Tielin Wang, Klaus-J. Jens,