期刊
CHEMICAL ENGINEERING JOURNAL
卷 383, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.123195
关键词
Oxidative dehydrogenation of ethane; MoVTeNbOx; Intrinsic kinetic model; Sensitivity analysis
资金
- Bavarian Ministry of Economic Affairs, Energy and Technology [47-3665 g/1075/1-NW-1501-0003]
- U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES), Division of Chemical Sciences, Geosciences and Biosciences (Transdisciplinary Approaches To Realize Novel Catalytic Pathways to Energy Carriers) [FWP 47319]
- TUM Graduate School
An intrinsic kinetic model for the selective production of ethene via oxidative dehydrogenation of ethane over the M1 phase of MoVTeNb mixed metal oxides is presented. Formation of acetic acid, carbon monoxide and carbon dioxide has been incorporated using a holistic reaction mechanism. The proposed model is based on two different oxygen sites, namely, lattice oxygen causing carbon-hydrogen bond cleavage and electrophilic surface oxygen responsible for the formation of carbon-oxygen bonds. It is found that carbon dioxide exclusively originates from decarboxylation of acetate species, while ethene selectively reacts to CO. Consumption and formation of all species are well predicted by the proposed model. Sensitivity analyses demonstrate the strong impact of the initial carbon-hydrogen cleavage on the net ethene production rate. Moreover, regeneration of lattice oxygen sites is found to become rate-determining at oxygen-lean conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据