Article
Energy & Fuels
Chan Hun Kim, Young Gul Hur, Kwan-Young Lee
Summary: The ratio of Ni to W in NiWC catalyst significantly affects the hydrogen adsorption and carburization degree. Finding the optimal ratio is crucial for maximizing catalytic activity. While Ni addition can enhance catalytic activity, it may also lead to surface carbon deposition.
Article
Chemistry, Physical
Donghun Lee, Ki-Duk Kim, Yong-Kul Lee
Summary: Bimetallic CoWS2 catalysts were synthesized during slurry phase hydrocracking (HCK) of vacuum residue (VR) using W(CO)6 and Co-octoate as oil-soluble precursors. The dispersed catalysts were characterized by TEM and XAS, showing that the CoWS2 catalyst formed well-dispersed monolayers. This catalyst exhibited higher TOF and C7-ASP conversions compared to monometallic WS2 or Co9S8 catalysts in the VR HCK.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Donghun Lee, Yong -Kul Lee
Summary: The structure and catalytic activity of dispersed VxMo(1_x)S2 catalysts were investigated for hydrocracking of vacuum residue. The catalysts were prepared in situ using vanadium acetylacetonate and molybdenum hexacarbonyl as precursors. Characterization of the catalyst structure confirmed the formation of well-dispersed V-MoS2 phase. The V-MoS2 catalysts exhibited higher stability in the catalyst recycle test compared to monometallic sulfides.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Ngoc Thuy Nguyen, Ki Hyuk Kang, Hai Hung Pham, Kang Seok Go, Duy Van Pham, Pill Won Seo, Nam Sun Nho, Chul Wee Lee, Sunyoung Park
Summary: This study investigated the effect of catalyst concentration on the reaction performance of slurry phase hydrocracking of vacuum residue. Results showed that high catalyst concentrations could suppress secondary cracking reactions and alter the conversion behavior of asphaltenes, leading to the proposal of equations for coke formation onset and a kinetic model. Overall, the transformation of residue to coke was dominant in non-catalytic hydrocracking and the coke formation rate decreased significantly with increasing catalyst concentration.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Environmental
Karna Wijaya, Muhammad Ahan Kurniawan, Wahyu Dita Saputri, Wega Trisunaryanti, Mohammad Mirzan, Poedji Loekitowati Hariani, Alfrets Daniel Tikoalu
Summary: Ni-BZS catalyst was synthesized and optimized for hydrocracking process, showing high activity and selectivity, especially Ni-BZS 0.5 catalyst which can convert coconut oil into bio-gasoline efficiently. Further studies on the role of Ni metal and optimization of catalyst composition are needed for future research.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Yulia Yu Borisova, Nikolay A. Mironov, Svetlana G. Yakubova, Dmitry N. Borisov, Igor P. Kosachev, Makhmut R. Yakubov
Summary: The study shows that the use of ethylene tar as an additive in the visbreaking process of vacuum residue can increase the yield of target products with a higher proportion of aromatic hydrocarbons.
Article
Energy & Fuels
Qing-Yan Cui, Hao-Bin Zhang, Ting-Hai Wang, Chao Yan, Yan-Ning Cao, Yuan-Yuan Yue, Li-Long Jiang, Xiao-Jun Bao
Summary: The study focused on the preparation and performance of rectorite-supported catalysts, revealing that the calcination of rectorite helped improve the yields of naphtha and middle distillates in slurry-phase hydrocracking of vacuum residue.
Article
Energy & Fuels
Weiwei Feng, Bin Zheng, Qingyan Cui, Tinghai Wang, Pei Yuan, Haibo Zhu, Yuanyuan Yue, Xiaojun Bao
Summary: It was found that the Mo/ASA-4 catalyst exhibited the highest exposure of Mo active sites and hydrogenation activity, resulting in higher hydrocracking yields and inhibition of over cracking of intermediate products.
Article
Chemistry, Physical
Yoon-Hyun Hwang, Yong-Kul Lee
Summary: In this study, the catalytic activities of dispersed NixW(1-x)S2 catalysts for hydrocracking of vacuum residue were investigated. The dispersed catalysts were prepared in situ in the reaction using nickel acetylacetonate and tungsten hexacarbonyl as precursors. It was found that the bimetallic metal sulfides of NixW(1-x)S2 exhibited superior catalytic activity, with higher turnover frequency values and less coke formation compared to monometal sulfides in the hydrocracking process.
JOURNAL OF CATALYSIS
(2021)
Article
Green & Sustainable Science & Technology
Bolong Jiang, Tianhan Zhu, Nan Jiang, Mingyue Gong, Gang Yang, Feng Li, Hua Song, Tianzhen Hao
Summary: The novel meso-AgCeY zeolite, with introduced mesopores and multiple adsorption metal ions, effectively suppressed diffusion limitations of sulfur compounds and showed high ADS performance through pi-complexation and sulfur-metal interactions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Xiangyang Zhu, Wenjie Wang, Huifang Xing, Qinling Bi, Li Wang, Meng Rong, Shan Ni, Menglei Yuan, Liangrong Yang, Huizhou Liu
Summary: A simple and universal strategy was presented to synthesize Fe3O4@PDA@shell nanoparticles, which showed improved dispersity and stability of nanosized MoS2 catalysts. The versatility of this strategy for other shell materials was also demonstrated, providing promising potential for designing multifunctional core-shell-shell materials for various applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Iratxe Crespo, Roberto Palos, David Trueba, Javier Bilbao, Jose M. Arandes, Alazne Gutierrez
Summary: Motivated by extending catalysts' life cycle and enhancing the utilization of secondary refinery streams, this study aimed to obtain high quality gasoline by hydrocracking pre-hydrotreated light cycle oil (HT-LCO) using noble metals catalysts supported on spent fluid catalytic cracking (FCC) catalyst. The results revealed that a temperature of 400 degrees C was the optimum for hydrocracking HT-LCO, leading to maximized gasoline yield (up to 80 wt%) and minimized gas formation. The Pt/FCC catalyst outperformed the Pd/FCC catalyst, producing an iso-paraffinic gasoline fraction with a RON of 93.0, thanks to its high hydrogenation capacity.
Article
Engineering, Environmental
Vladimir V. Chesnokov, Pavel P. Dik, Andrey V. Nikityonok, Aleksandra S. Chichkan, Valentin N. Parmon
Summary: Improvement and development of technologies for processing heavy oils and oil residues is crucial in modern oil refining. This study investigated the decomposition pathway of formic acid and compared its effects with hydrogen on vacuum residue hydrocracking using Ni-Mo/Y-Al2O3 and Ni-Mo/Al2O3 catalysts. The results showed that formic acid led to higher conversion of the residue and lower sulfur content in the liquid products compared to hydrogen. The use of formic acid as a hydrogen donor simplified the hydrocracking process significantly.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Xiubin Hu, Jianbo Wang, Tinghai Wang, Chan Wang, Hongwei Zhang, Pei Yuan, Qingyan Cui
Summary: In this study, a high-efficiency mesoporous iron oxide catalyst was synthesized and the influence of alkali concentration on its crystal phase, morphology, and pore structure was investigated. The application of this catalyst in the slurry-phase hydrocracking of heavy oil led to an increase in the yields of gasoline and diesel distillates.
Article
Chemistry, Analytical
Li Jiguang, Hou Huandi, Shen Haiping
Summary: This study investigated the thermal cracking and hydrocracking reactions of inferior vacuum residue with high asphaltene content and high residual carbon value provided by Qingdao refining & chemical company. The conversion ratios for these reactions were analyzed, and the compatibility and structural information of the reaction products were determined to reveal the changing rules of compatibility.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Energy & Fuels
Vagif Abbasov, Tarana Mammadova, Nushabe Aliyeva, Mutallim Abbasov, Nahid Movsumov, Anupam Joshi, Yuri Lvov, Elshad Abdullayev
Article
Energy & Fuels
Vagif M. Abbasov, Hikmat C. Ibrahimov, Gulbaniz S. Mukhtarova, Elshad Abdullayev
Article
Chemistry, Applied
Anupam R. Joshi, Randall Null, Scott Graham, Elshad Abdullayev, Vladimir Mazurenko, Yuri Lvov
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2016)
Article
Energy & Fuels
Vagif Abbasov, Tarana Mammadova, Natalya Andrushenko, Nadira Hasankhanova, Yuri Lvov, Elshad Abdullayev
Article
Chemistry, Physical
Yafei Zhao, Elshad Abdullayev, Alexandre Vasiliev, Yuri Lvov
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2013)
Article
Chemistry, Multidisciplinary
Anupam Joshi, Elshad Abdullayev, Alexandre Vasiliev, Olga Volkova, Yuri Lvov
Article
Chemistry, Multidisciplinary
Wenbo Wei, Renata Minullina, Elshad Abdullayev, Rawil Fakhrullin, David Mills, Yuri Lvov
Proceedings Paper
Nanoscience & Nanotechnology
Yafei Zhao, Elshad Abdullayev, Yuri Lvov
2ND INTERNATIONAL CONFERENCE ON STRUCTURAL NANO COMPOSITES (NANOSTRUC 2014)
(2014)
Meeting Abstract
Chemistry, Multidisciplinary
Wenbo Wei, Elshad Abdullayev, David K. Mills, Yuri Lvov
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Meeting Abstract
Chemistry, Multidisciplinary
Yafei Zhao, Elshad Abdullayev, Yuri Lvov
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Meeting Abstract
Chemistry, Multidisciplinary
Weihua Ming, Haoran Chen, Elshad Abdullayev
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Meeting Abstract
Chemistry, Multidisciplinary
Anupam R. Joshi, Elshad Abdullayev, Alexandre Vasiliev, Yuri Lvov
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Meeting Abstract
Chemistry, Multidisciplinary
Elshad Abdullayev, Yuri Lvov
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Proceedings Paper
Engineering, Mechanical
E. Abdullayev, A. Joshi, W. Wei, Y. Zhao, Y. Lvov
INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 9, PTS A AND B
(2013)
