Article
Engineering, Chemical
Phuong Lan Tran-Nguyen, Kim-Phung Ly, Luong Huynh Vu Thanh, Artik Elisa Angkawijaya, Shella Permatasari Santoso, Nguyen-Phuong-Dung Tran, Meng-Lin Tsai, Yi-Hsu Ju
Summary: In this study, zeolite NaX was successfully synthesized directly using RHA without pretreatment, with optimal conditions determined for the synthesis process. This method is a time saving, integrated and environmentally friendly process, showing potential for synthesizing other types of zeolites.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Chemical
Farid Masoumi, Sahar Safari, Reza Khoshbin, Ramin Karimzadeh
Summary: Rice husk ash (RHA) was successfully utilized as a silica precursor to synthesize TS-1 zeolite through hydrothermal synthesis. The synthesized TS-1 zeolite from RHA showed comparable properties to the TS-1 synthesized with TEOS. The prepared NiMo/TS-1 catalyst using RHA as support showed superior hydrodesulfurization activity compared to catalysts prepared with other methods.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Energy & Fuels
Hossein Beidaghy Dizaji, Thomas Zeng, Hieronymus Hoelzig, Jens Bauer, Gert Kloess, Dirk Enke
Summary: The study investigated ash transformation mechanisms in silica-rich biomass fuels, revealing the impact of impurities on the atomic structure of silica, leading to altered ash melting behavior and viscosity. Chemical water washing, acid leaching, and blending rice straw with rice husk were found to strongly influence the chemical composition of ashes and improve ash melting behavior.
Article
Biotechnology & Applied Microbiology
Phuong Lan Tran-Nguyen, Kim-Phung Ly, Thanh-Ty Nguyen, Shella Permatasari Santoso, Nguyen-Phuong-Dung Tran, Artik Elisa Angkawijaya, Maria Yuliana, Minh-Nhut Nguyen, Tuan Thi-Tran-Anh
Summary: In this study, zeolite NaP1 with high crystalline intensity and good shape was synthesized using rice husk ash. Factors such as mixing ratios, aging time, and reaction time were investigated for zeolite formation. The optimal synthesized zeolite NaP1 showed a surface area of 50 m(2) g(-1) and a pore diameter of 40.77 angstrom. The maximum adsorption capacity of the Langmuir model reached 19.053 mg g(-1).
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Thermodynamics
Roya Hamidi, Lingyu Tai, Laura Paglia, Marco Scarsella, Martina Damizia, Paolo De Filippis, Sogand Musivand, Benedetta de Caprariis
Summary: In this study, a low-cost catalyst and heterogeneous hydrogen producer were used for the upgrading of bio-crude. The synthesized Y zeolite showed better performance due to the introduction of TMAOH template. The upgraded oil yield increased and the coke amount reduced, leading to a higher heating value. Hydrogenation products were produced in higher amounts, consuming furan derivatives and lignin-derived compounds. Additionally, a one-pot catalytic hydrothermal treatment method was conducted, combining the bio-crude production and upgrading steps together.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Environmental Studies
Seong Hye Son, Hae In Lee, Won Chul Cho, Ui Myung Chung, Ho Won Ra, Sung Min Yoon, Jae Goo Lee, Young Woo Rhee, Myung Won Seo
Summary: Rice husk is a valuable agricultural biomass that can be used to produce high-purity SiO2 and Si. This study conducted a mechanochemical experiment to convert rice husk ash into porous Si using attrition mill and various acid leaching and heat-treatment conditions. The results showed the possibility of using eco-friendly lactic acid instead of harmful hydrochloric acid, the conversion of heat-treated GRHA to Si without acid leaching, and the importance of carbon content in RHA and GRHA for Si conversion.
ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Applied
I. S. Golubev, P. P. Dik, M. O. Kazakov, V. Yu Pereyma, O. Klimov, M. Yu Smirnova, I. P. Prosvirin, E. Yu Gerasimov, D. O. Kondrashev, V. A. Golovachev, O. S. Vedernikov, A. Kleimenov, A. S. Noskov
Summary: The study investigated the effect of Si/Al ratio of zeolite Y on the performance of NiW catalysts for second stage hydrocracking, finding that an increase in Si/Al ratio leads to decreased catalytic activity and increased selectivity to middle distillates. Zeolite-based catalysts with Si/Al ratios of 24 and 37 showed similar selectivity at 50% UCO conversion, mainly attributed to differences in textural properties of the zeolites.
Article
Energy & Fuels
Yujia Jin, Qing Xu, Fei Zheng, Jianyi Lu
Summary: To reduce CO2 emissions, new raw materials have been developed for low-cost CO2 adsorbents. A novel adsorbent, NaX zeolite synthesized from co-combustion ash, was investigated for its preparation condition, modification, characteristics, and CO2 adsorption capacity. The results showed that the synthesized NaX zeolite had high purity and a large surface area, with an adsorption capacity of 5.03 mmol/g at 298.15 K. Modification by Li+ exchange significantly enhanced the CO2 adsorption capacity, with the LiX zeolite having a surface area of 614.0 m(2)/g and an adsorption capacity of 5.57 mmol/g.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Engineering, Chemical
Yu Yang, Samira Mandizadeh, Hao Zhang, Masoud Salavati-Niasari
Summary: Metal oxide-modified zeolite Y nanocomposites were synthesized and used for hydrodesulfurization, effectively reducing sulfur compound concentration to meet Euro-5 standard. ZnO-zeolite Y nanocomposites showed efficient removal of sulfur compounds under specific conditions, with high activity even after multiple recycles.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yanni Guo, Hanqiong Jia, Jiayao Qi, Binbin Fan, Bo Qin, Jinghong Ma, Yanze Du, Ruifeng Li
Summary: In the hydrocracking of 9, 10-dihydroanthracene, the acid sites and their locations in Y zeolites are crucial. The dominant reaction for industrial Y zeolites is hydrogen transfer, regardless of temperature. Y zeolites with developed mesopores exhibit enhanced ring-opening and cracking ability due to improved molecular transport and accessibility of acid sites. The amount of highly strong Bronsted acid sites in high-silica Y zeolites is crucially related to their ring-opening and cracking ability. The rational elucidation of the reaction processes of 9, 10-dihydroanthracene hydrocracking over industrial Y zeolites with different properties.
CATALYSIS COMMUNICATIONS
(2023)
Review
Chemistry, Physical
Hamisah Ismail, Hasmaliza Mohamad
Summary: There is currently a growing interest in utilizing agricultural waste, with a focus on processing rice husk ash or rice straw ash into biocompatible products used in biomedical implants, leading to the effective conversion of high-value products and reducing environmental pollution.
Article
Construction & Building Technology
Maelson M. Souza, Marcos A. S. Anjos, Maria V. V. A. Sa
Summary: The study demonstrates the technical feasibility of using scheelite residue and rice husk ash to produce Lightweight Aggregates (LWAs) with significant environmental impacts and favorable properties for LWA development. The manufactured aggregates showed properties at least similar to commercial LWAs, indicating the viability of using SPR and RHA for LWA production.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Qiang Su, Jinming Xu
Summary: The use of glass sand and rice husk ash in concrete production saves natural sand resources and promotes waste recycling. The pozzolanic effect of rice husk ash reduces the alkali-silica reaction caused by glass sand and cement slurry. The addition of glass sand improves tensile strength and cyclic compression performance, while rice husk ash enhances compressive and splitting tensile strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Ce Xian, Yichao Mao, Xiangyun Long, Ziming Wu, Xiang Li, Zhengkai Cao
Summary: A series of Y zeolites with different pore properties were prepared as a support for hydrocracking catalysts for the production of BTEX from tetralin. Characterization techniques were used to obtain the properties of the catalysts, and their performance in tetralin hydrocracking was evaluated. The results showed that the Si/Al ratio is a key property of zeolites and an increase in the V-micro/V-meso ratio facilitated the formation of BTEX products. It was also found that thermodynamics control the hydrogenation-cracking pathway and strong acidity affects the equilibrium temperature.
Article
Chemistry, Applied
P. P. Dik, I. S. Golubev, M. O. Kazakov, V. Y. Pereyma, M. Y. Smirnova, I. P. Prosvirin, E. Y. Gerasimov, D. O. Kondrashev, V. A. Golovachev, A. Kleimenov, O. S. Vedernikov, O. Klimov, A. S. Noskov
Summary: NiW catalysts for second stage hydrocracking were prepared by impregnation of granulated supports with ultrastable zeolite Y content of 5-30 wt%; amorphous silica-alumina content of 45-20 wt%; and gamma-Al2O3 content of 50 wt%. The catalysts were studied by low-temperature N-2 adsorption, HRTEM, XPS and IR spectroscopy of adsorbed pyridine. The study revealed that the concentration of Bronsted acid sites increases with increasing zeolite content in the catalysts.Hydrocracking tests were carried out under specific conditions, showing that the higher the zeolite content in the support, the higher the catalyst's activity.
Article
Chemistry, Applied
Reza Ravandi, Reza Khoshbin, Ramin Karimzadeh
JOURNAL OF POROUS MATERIALS
(2018)
Article
Engineering, Chemical
Reza Khoshbin, Shima Oruji, Ramin Karimzadeh
ADVANCED POWDER TECHNOLOGY
(2018)
Article
Chemistry, Applied
Shima Oruji, Reza Khoshbin, Ramin Karimzadeh
FUEL PROCESSING TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
Shima Oruji, Reza Khoshbin, Ramin Karimzadeh
MATERIALS CHEMISTRY AND PHYSICS
(2019)
Article
Chemistry, Physical
Sahar Safari, Reza Khoshbin, Ramin Karimzadeh
REACTION KINETICS MECHANISMS AND CATALYSIS
(2020)
Article
Engineering, Chemical
Mahnoush Salehi, Reza Asadi, Jafar Towfighi Darian, Reza Khoshbin
Summary: The study investigates the effects of different promoters on the yield and selectivity of propylene in oxidative dehydrogenation of propane. Titania nanotubes with distinct promoters including silver, nitrogen, and cerium were synthesized and used as catalyst supports. Among them, the Mo/Ce-TNT catalyst showed the highest efficiency with significantly improved propylene yield and selectivity.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Energy & Fuels
Faezeh Mirshafiee, Ramin Karimzadeh, Reza Khoshbin
Summary: A new type of host-guest composite catalyst, ZSM-5/Beta, was synthesized with hierarchical pore system. The 30% Beta zeolite sample showed higher activity, gasoline yield, and longer catalyst lifetime. The binary structure of these catalysts not only integrated the pore characteristics of ZSM-5 and Beta zeolites but also changed the acid properties, creating new active sites, leading to improved selectivity to alkylated aromatics and gasoline quality.
Article
Energy & Fuels
Leila Yosefi, Reza Khoshbin, Ramin Karimzadeh
Summary: A series of novel nickel, molybdenum, and cobalt loaded boron nitride adsorbents were synthesized for adsorptive removal of DBT from model diesel fuel. Among these adsorbents, cobalt and nickel loaded boron nitride showed the best desulfurization capacity. This enhancement in adsorption performance could be attributed to the interactions between metal oxides and the adsorbent.
Article
Green & Sustainable Science & Technology
Faezeh Mirshafiee, Reza Khoshbin, Ramin Karimzadeh
Summary: A new composite zeolite, ZSM-5/Beta, was successfully developed by incorporating Beta zeolite into the synthesis gel of ZSM-5 zeolite. The composite material exhibited improved crystallinity and surface properties, and had higher total pore volume and more mesopores compared to the original ZSM-5 zeolite. The composite catalyst showed lower acidity and a reduced number of acid sites, which contributed to decreased coke deposition. Evaluation of catalytic activity in the MTG process demonstrated that the composite catalyst had higher selectivity and yield compared to the initial ZSM-5 zeolite.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Faezeh Mirshafiee, Reza Khoshbin, Ramin Karimzadeh
Summary: In this study, the effect of water co-feeds on the distribution of reaction products and coking behavior of a novel composite catalyst was investigated. The results showed that adding water to the reaction had a positive impact on catalyst activity and lifetime under certain conditions.
Article
Engineering, Chemical
Reza Khoshbin, Maryam Naeimi, Fatemeh Mohamad Alikhani, Monireh Sadat Hosseini Hashemi, Hiresh Moradi
Summary: A series of MgO/ZnAl2O4 nanocatalysts were prepared and evaluated for their physicochemical properties. The catalysts with porous structure and highly dispersed active phase were successfully synthesized by different synthesis methods and fuel ratios. Among them, the sample synthesized with a urea to citric acid ratio of 1:2 exhibited the best catalytic performance and stability.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Engineering, Chemical
Farid Masoumi, Sahar Safari, Reza Khoshbin, Ramin Karimzadeh
Summary: Rice husk ash (RHA) was successfully utilized as a silica precursor to synthesize TS-1 zeolite through hydrothermal synthesis. The synthesized TS-1 zeolite from RHA showed comparable properties to the TS-1 synthesized with TEOS. The prepared NiMo/TS-1 catalyst using RHA as support showed superior hydrodesulfurization activity compared to catalysts prepared with other methods.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Roya Hamidi, Reza Khoshbin, Ramin Karimzadeh
Article
Chemistry, Multidisciplinary
Sahar Safari, Reza Khoshbin, Ramin Karimzadeh
Article
Engineering, Chemical
Yongxiang Wu, Nguyen Thi Hong Nhung, Deqian Zeng, Nengneng Luo, Akira Otsuki, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study proposed a novel method for synthesizing flower-like vaterite calcium carbonate using nanobubble-containing ethanol and water mixed solution as the solvent and discussed the formation mechanism of vaterite with different shapes. The synthesized vaterite has significant practical interest in the integrated treatment of wastewater contaminated by heavy metals with effective Cd(II) removal, providing a promising field for studying heavy metal and pollutant adsorption in the liquid phase.
ADVANCED POWDER TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jian Gong, Lipo Cheng, Ming Liu, Jie Jiang, Xiaoduo Ou
Summary: This study investigates the effects of particle shape on the collapse of granular columns using the discrete element method. The results show that particle shape has a significant impact on deposition morphology, energy evolution, and mechanical coordination number. Sphericity and angularity are identified as the most important macroscale factors, while roughness has a weaker microscale influence.
ADVANCED POWDER TECHNOLOGY
(2024)