Article
Energy & Fuels
Zahraa M. El-Deeb, Wael A. Aboutaleb, Abdelghaffar S. Dhmees, Ahmed M. A. El Naggar, Kareem Emara, Abdelfattah T. Elgendy, Awad Ahmed
Summary: The conversion of waste tires into value-added products such as bio-fuels is recommended for better waste management. This study investigates the catalytic-hydrocracking of waste tire pyrolytic oil to fuels using Ni-W supported on zeolite X and A. The results show that the prepared catalysts exhibit high activity in producing gasoline and diesel from the waste tire pyrolytic oil.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Multidisciplinary Sciences
Mahdi Abdi-Khanghah, Arezou Jafari, Goodarz Ahmadi, Abdolhossein Hemmati-Sarapardeh
Summary: In this study, the effect of reaction temperature and catalysts soaking time on the concentration distribution of upgraded oil samples was investigated using the response surface methodology (RSM) approach and multi-objective optimization. Statistical modeling was performed using experimental data, and correlations for predicting the concentration of different fractions were developed. The results showed good agreement between the RSM model and experimental data, with high coefficients of determination. The optimum upgrading condition, obtained through multi-objective optimization, was found to be 378.81 degrees C and 17.31 hours, with specific compositions for each fraction.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Jiebang Peng, Donghong Zhang, Yushan Wu, Hongtao Wang, Xin Tian, Mingyue Ding
Summary: In this work, a series of Ni-Co-Al catalysts with different Ni/Co ratios were evaluated for the production of 1,5-PeD from FFA. It was found that the catalytic performance and product distribution were highly dependent on the Ni/Co ratio as well as reaction conditions. The highest catalytic activity was achieved with the Ni1Co11Al catalyst, which exhibited superior stability due to the presence of Ni. The addition of Ni promoted hydrogen adsorption/activation capability and enhanced the surface H concentration, facilitating the catalytic activity.
Article
Chemistry, Multidisciplinary
Yunyi Yang, Ren Zou, Jianyun Gan, Yujia Wei, Zhongxin Chen, Xuehui Li, Shimelis Admassie, Yunpeng Liu, Xinwen Peng
Summary: Replacing the oxygen evolution reaction (OER) with biomass oxidation can improve hydrogen production efficiency and energy utilization in alkaline seawater electrolysis, while also simultaneously producing valuable formic acid.
Article
Chemistry, Physical
Xiangyang Zhu, Dong Qiao, Liangrong Yang, Qinling Bi, Huifang Xing, Shan Ni, Menglei Yuan, Huizhou Liu, Luhai Wang, An Ma
Summary: A novel hybrid material of carbon covered Fe3O4 nanoparticles and MoS2 nanoflower (FCM) was prepared by micelle-assisted hydrothermal methods. Characterization techniques including XRD, HRTEM, and XPS were used to show that FCM has superior catalytic hydrocracking activity and easy recovery by external magnetic field.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Y. Shi, W. Gao, G. Wang, J. Fan, C. Wang, F. Wang, Y. He, X. Guo, S. Yasuda, G. Yang, N. Tsubaki
Summary: An efficient bifunctional ZnCr2O4-ZSM-22 catalyst was developed for direct conversion of CO2 to ethylene, achieving 24.0% ethylene selectivity and 21.9% CO2 conversion. The catalyst exhibited a high ethylene/light olefin ratio of over 93% and demonstrated superior stability with no significant deactivation over 60 hours. The study systematically investigated the effects of various factors on the catalytic performances, providing a new avenue for CO2 conversion to ethylene.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Energy & Fuels
Alcides Simao, Enrique Dominguez-Alvarez, Chengdong Yuan, Muneer A. Suwaid, Mikhail A. Varfolomeev, Jorge Ancheyta, Omar F. Al-mishaal, Sergey Kudryashov, Igor S. Afanasiev, Dmitry A. Antonenko, Oleg Petrashov, Kirill A. Dubrovin
Summary: This article provides a comprehensive review of the application of different metal-based nanoparticles for upgrading heavy oils. The focus is on the catalysts used for in-situ upgrading, using various thermal treatment methods. Different types of catalysts have been identified, but due to their diversity and variations in evaluation conditions, a direct comparison of their performance is not possible. The literature reviewed indicates the need for further research in order to develop more effective catalysts for increasing recovery factor and permanent upgrading of heavy and extra-heavy oil quality.
Article
Energy & Fuels
Pilar Tarifa, Tomas Ramirez Reina, Miriam Gonzalez-Castano, Harvey Arellano-Garcia
Summary: In this study, the catalytic upgrading of surrogate biomass gasifiers through the generation of syngas was investigated. By introducing an appropriate amount of Ni, the CO content was increased and carbon deposition was reduced. The results suggest that the biomass gasification mixture can be efficiently upgraded using the catalyst under suitable conditions.
Article
Thermodynamics
Mahdi Abdi-Khanghah, Arezou Jafari, Goodarz Ahmadi, Abdolhossein Hemmati-Sarapardeh
Summary: A novel synthesis process was proposed to produce mono, bi, and trimetallic Sn-Ni-Cu/ionic microemulsion catalysts (IMECs) that are active and feasible. The catalytic solutions and IMECs were characterized using various techniques, including conductivity, refractivity index, inductively coupled plasma, light microscope, and FTIR. Experimental evaluation and statistical modeling were conducted to understand the interaction between catalyst formulation and operational parameters. The optimal catalyst formulation was found to be the trimetallic IMEC with 23.09% Sn, 60.648% Ni, and 16.268% Cu, which exhibited a viscosity of 586.99 cP and a gas weight percent (PGWP) of 1.269%. The reaction temperature of 73 degrees C and catalysts wt% of 0.2% were considered as the optimum operational condition.
Article
Energy & Fuels
Zhaofei Li, Yimeng Li, Hao Xu, Jack Jarvis, Shijun Meng, Hua Song
Summary: The research demonstrated the superior performance of heavy crude partial upgrading under CH4 atmosphere compared to N-2, indicating methane's role in effective suppression of thermal cracking and promoting heavy ends conversion. Furthermore, the study revealed differences in oil product properties derived from different atmospheres, showing changes with increasing asphaltene conversion.
Article
Energy & Fuels
Ameer H. AL-Rubaye, Muneer A. Suwaid, Ameen A. Al-Muntaser, Mikhail A. Varfolomeev, Ilfat Z. Rakhmatullin, Mohammed H. Hakimi, Shadi A. Saeed
Summary: The study demonstrates that bimetallic catalysts based on transition metals can effectively improve the in-situ heavy oil upgrading process by reducing viscosity, increasing saturates content, improving H/C ratio, and removing sulfur and nitrogen compounds. Among the catalysts tested, CoFe2O4 shows the best performance in enhancing the quality of heavy crude oil.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Jacek Grams, Robert Ryczkowski, Renata Sadek, Karolina Chalupka-Spiewak, Sandra Casale, Stanislaw Dzwigaj
Summary: The main objective of these studies was to develop a competitive catalyst for upgrading biomass pyrolysis vapors to H2-rich gas. The experiments determined the effect of incorporating zirconium into the structure of BEA zeolite on the performance of NiBEA catalyst in this process. The results showed that the introduction of zirconium increased the efficiency of Ni catalyst in producing H2-rich gas.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Chengyan Wen, Luying Lu, Xinghua Zhang, Ke Jin, Lungang Chen, Qi Zhang, Longlong Ma, Chenguang Wang
Summary: This study investigates the impact of mesoporosity and mesoporous diameter on the performance of iron-based/ZSM-5 bifunctional catalysts in the conversion of syngas to aromatics. The results show that increasing the mesoporosity extends the catalyst's lifetime and maintains aromatics selectivity, while reducing the mesopore size increases aromatics selectivity and the fraction of light aromatics.
Article
Chemistry, Physical
Andres Sanz-Martinez, Paul Duran, Victor D. Mercader, Eva Frances, Jose Angel Pena, Javier Herguido
Summary: This study focused on the concept of 'biogas upgrading' to increase CH4 levels in sweetened biogas to those of synthetic natural gas. The behavior of three lab-made catalysts in a CO2 methanation reaction was tested, showing good catalytic performance and high CH4 selectivity. Addition of CH4 did not significantly alter the reaction mechanism, allowing for potential utilization of off-peak H-2 for maximizing CH4 yield.
Review
Chemistry, Applied
Jacek Grams, Agata Jankowska, Joanna Goscianska
Summary: Lignocellulosic biomass can be converted into bio-oil through high-temperature treatment, but the complex structure limits the selectivity of desired products. Heterogeneous catalysts improve biomass decomposition efficiency and bio-oil quality, but may suffer from insufficient selectivity and coke formation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
