Article
Thermodynamics
Diego Maporti, Federico Galli, Paolo Mocellin, Gianluca Pauletto
Summary: This work reports the design of a flexible combined process in which electrified cracking and oxidative dehydrogenation processes are coupled. It identifies an economic viable alternative to the conventional fuel-fired cracking for the production of ethylene, reducing energy consumptions and carbon dioxide emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Yanliang Zhou, Yicong Chai, Xiaoyu Li, Zihao Wu, Jian Lin, Yujia Han, Lin Li, Haifeng Qi, Yiming Gu, Leilei Kang, Xiaodong Wang
Summary: The layered TiO2 catalyst M-TiO2, derived from Ti3C2Tx MXene material, shows significant enhancement in ethane ODH performance compared to P25 TiO2. The presence of Ti and oxygen vacancy defects on M-TiO2 plays a key role in the conversion of C2H6. Ti vacancy sites stabilize the structure and increase the reducibility of lattice oxygen, while oxygen vacancy sites facilitate the activation of O2 to recover lattice oxygen.
Article
Engineering, Environmental
Runxia Cai, Leo Brody, Yuan Tian, Luke Neal, Arnab Bose, Fanxing Li
Summary: Chemical looping oxidative dehydrogenation (CL-ODH) has the potential to replace steam cracking for ethylene production. Accurate reactor modeling is crucial for scaling up and optimizing this new technology. A one-dimensional packed bed model was used to simulate the CL-ODH of ethane to ethylene, and the results were validated by experiments. Overall, this study provides insights for efficient and optimized operation of CL-ODH reactors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yukiko Hosono, Hikaru Saito, Takuma Higo, Kosuke Watanabe, Kazuharu Ito, Hideaki Tsuneki, Shun Maeda, Kunihide Hashimoto, Yasushi Sekine
Summary: The study demonstrates that Ce0.8Co0.2O2 catalyst doped with transition metal shows high activity and selectivity for ethylene production in the presence of steam, operating through the Mars-van Krevelen mechanism. The Co-CeO2 interactions play a crucial role in controlling the characteristics of the reactive lattice oxygen suitable for EDH.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Xuedi Qin, Huanyang Wu, Ruihang Wang, Liang Wang, Lu Liu, Hangjie Li, Bo Yang, Hang Zhou, Zuwei Liao, Feng-Shou Xiao
Summary: This study developed a reaction process that utilizes CoS-1 catalyst and MnOx @ Na2WO4 for the dehydrogenation of ethane and selective hydrogen combustion, thereby improving the conversion of ethane and the selectivity of ethylene. The process resulted in a per-pass ethane conversion rate of 43.2% and ethylene selectivity of 93.1% at 590 degrees Celsius and 0.8 bar of ethane feed.
Article
Energy & Fuels
Xin Huang, Zhongqing Yang, Jiaqi Qiu, Bo Tang, Changlei Qin, Yunfei Yan, Jingyu Ran
Summary: In this study, a potential route for selective and efficient ethylene production via chemical looping oxidative dehydrogenation of ethane using alkaline, rare earth, and transition metals modified BaCoO3 perovskite as the circulative redox catalyst was reported. The results showed that ethane conversion and ethylene selectivity were mainly regulated by lattice oxygen and Co valence of the catalysts, respectively. Co-doping of La and Cu to A/B-site of BaCoO3 enhanced both ethane conversion and ethylene selectivity, achieving the highest selectivity of 81.2% at ethane conversion of 67.6%.
Article
Chemistry, Physical
Mehran Sajad, Roman Bulanek, Stanislav Slang
Summary: This research investigates the use of a binary eutectic composition of KCl and MgCl2 supported on lanthanum exchanged FAU zeolite for the oxidative dehydrogenation of ethane. The initial conversion of ethane was 80% with ethene as the main product. Over time on the stream, catalyst deactivation was observed, attributed to the removal of chlorine from the catalyst and the formation of side products, such as chlorinated hydrocarbons.
Article
Chemistry, Applied
Ming Li, Yunfei Gao, Kun Zhao, Haibin Li, Fang He, Pengmei Lv, Zhen Huang
Summary: The study investigated the use of Mg-doped LSFC as a catalyst for chemical looping oxidative dehydrogenation, which significantly increased ethylene selectivity and achieved high ethylene selectivity and ethane conversion rates. XPS and X-ray diffraction characterizations revealed that surface-absorbed peroxide played a critical role in selective ethane CL-ODH.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Christopher R. Riley, Andrew De La Riva, Isabel L. Ibarra, Abhaya K. Datye, Stanley S. Chou
Summary: Steam cracking of ethane is the dominant method for ethylene production, but alternative pathways and reactor designs are being explored to improve efficiency. Research comparing catalytic and non-catalytic dehydrogenation of ethane showed that an open tube quartz reactor without a catalyst can achieve high ethylene yields. Adding solids to the reactor, however, led to lower ethylene production, suggesting the importance of optimizing reactor designs for future advancements in non-oxidative dehydrogenation.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Jiaxu Liu, Zhenmei Zhang, Yulin Jiang, Xiao Jiang, Ning He, Siyang Yan, Peng Guo, Guang Xiong, Ji Su, Gianvito Vile
Summary: This study reveals the importance of controlling zeolite particle size and K2O addition in improving selectivity and catalyst stability during Zn-catalyzed CO2-assisted oxidative dehydrogenation of ethane. The nano-sized SSZ-13 catalysts outperform the micro-sized SSZ-13 catalysts, and K2O modification neutralizes the acidity of the catalysts, leading to higher selectivity and stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Giancarlo Luongo, Felix Donat, Alexander H. Bork, Elena Willinger, Annelies Landuyt, Christoph R. Muller
Summary: This article presents a chemical-looping-based oxidative dehydrogenation (CL-ODH) scheme that eliminates the overoxidation of ethane through structural design modifications to the oxygen carrier, resulting in higher ethylene selectivity and yields. The CL-ODH scheme and material design strategy can be extended to other catalytic oxidation or dehydrogenation reactions requiring oxygen, offering enormous potential to intensify such processes.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Busra Eryildirim, Huseyin Arbag, Nuray Oktar, Gulsen Dogu
Summary: In this study, non-oxidative dehydrogenation of ethane was conducted using conventional heated (CHRS) and microwave heated (MWHRS) reactor systems with SBA-15 supported Cr or Mo catalysts. Results showed that Mo catalysts had higher ethane conversion, while Cr catalysts exhibited better activity in terms of ethylene formation and C2H4/H-2 ratio. Additionally, microwave heated reactor showed superior performance over conventionally heated reactor in terms of conversion, especially with 5Cr@SBA-15 catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Xiuyun Duan, Lingting Ye, Kui Xie
Summary: Porous vanadium-based single crystal powders were synthesized and found to exhibit effective catalytic activity and selectivity in ethane dehydrogenation reactions. Particularly, VN showed good stability even after working for 48 hours.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Junchen Liu, Seif Yusuf, Daniel Jackson, William Martin, Dennis Chacko, Kyle Vogt-Lowell, Luke Neal, Fanxing Li
Summary: The study presents a redox oxide @ molten salt core-shell architecture as a versatile catalyst design for chemical looping -oxidative dehydrogenation of ethane. By optimizing the operating conditions, high yields of ethylene production are achievable, along with reduced energy consumption and CO2 emissions.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
O. L. Eliseev, M. A. Kamorin, P. E. Davydov, A. S. Volkov, A. V. Kazakov, A. L. Lapidus
KINETICS AND CATALYSIS
(2015)
Article
Chemistry, Organic
S. N. Khadzhiev, N. Ya. Usachev, I. M. Gerzeliev, E. P. Belanova, V. P. Kalinin, V. V. Kharlamov, A. V. Kazakov, S. A. Kanaev, T. S. Starostina, A. Yu. Popov
PETROLEUM CHEMISTRY
(2015)
Article
Chemistry, Organic
N. Ya Usachev, I. M. Gerzeliev, V. V. Kharlamov, V. P. Kalinin, E. P. Belanova, S. A. Kanaev, A. V. Kazakov, T. S. Starostina
PETROLEUM CHEMISTRY
(2016)
Article
Chemistry, Organic
N. Ya Usachev, I. M. Gerzeliev, E. P. Belanova, A. V. Kazakov, V. P. Kalinin, V. V. Kharlamov, S. A. Kanaev, T. S. Starostina
PETROLEUM CHEMISTRY
(2016)
Article
Chemistry, Physical
A. V. Rassolov, G. O. Bragina, G. N. Baeva, N. S. Smirnova, A. V. Kazakov, I. S. Mashkovsky, A. Yu. Stakheev
KINETICS AND CATALYSIS
(2019)
Article
Chemistry, Physical
A. Rassolov, G. O. Bragina, G. N. Baeva, N. S. Smirnova, A. Kazakov, I. S. Mashkovsky, A. Bukhtiyarov, Ya Zubavichus, A. Yu Stakheev
KINETICS AND CATALYSIS
(2020)
Article
Chemistry, Physical
Alina I. Mytareva, Igor S. Mashkovsky, Sergey A. Kanaev, Dmitriy A. Bokarev, Galina N. Baeva, Alexander V. Kazakov, Alexander Yu. Stakheev
Summary: This study focuses on the ozone catalytic oxidation (OZCO) of alkanes at low temperatures (25-200 degrees C) using an alumina-supported manganese oxide catalyst, demonstrating that oxidation reactions can be accelerated in the presence of O-3. The superior catalytic performance of Mn/Al2O3 catalyst in OZCO is attributed to a high concentration of Mn2O3 species and oxygen vacancies, as indicated by characterization data (SEM-EDX, XRD, H-2-TPR, and XPS).
Article
Chemistry, Physical
A. Rassolov, G. A. Ivanov, G. O. Bragina, G. N. Baeva, N. S. Smirnova, A. Kazakov, N. Ya Usachev, A. Yu Stakheev
Summary: The bimetallic RhIn/SiO2 catalyst showed higher activity and selectivity in the liquid-phase hydrogenation of nitrobenzene compared to the monometallic Rh/SiO2 catalyst. This can be attributed to the change in the electronic state of Rh atoms and the geometry of the active sites in RhIn/SiO2.
KINETICS AND CATALYSIS
(2021)
