Article
Environmental Sciences
Haiping Xiong, Xinbo Zhu, Shangmin Lu, Chunlin Zhou, Weiping Xu, Zijian Zhou
Summary: An integrated system combining non-thermal plasma and Fe-Mn catalysts was developed for ethylene oxide oxidation, showing significantly enhanced reaction performance compared to using plasma alone. The interactions between Fe and Mn species led to improved catalyst properties, contributing to the oxidation reactions. Redox cycles between Fe and Mn species facilitated plasma reactions and accelerated the deep oxidation of by-products, leading to the production of key reaction products including acetic acid, acetaldehyde, methane, ethane, and ethylene.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Physics, Applied
Xiaozhong Chen, Hyun-Ha Kim, Tomohiro Nozaki
Summary: The plasma catalytic valorization of gases, particularly CH4 and CO2, has gained increasing attention. Efficient plasma-catalyst interaction is of key importance, but plasma catalysis is still poorly studied. This work discusses the challenging and important plasma-catalyst interaction, comparing different types of plasma and catalyst beds, with a focus on the fluidized-bed dielectric barrier discharge (FB-DBD) reactor. Ongoing research on FB plasma catalysis is reviewed and the superiority of FB-DBD to other candidates is critically evaluated.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Engineering, Environmental
Liying Jiang, Pengju Wang, Yufen Zhang, Zhiwei Yao
Summary: This study successfully improved the oxidation removal efficiency of CVOCs using a DBD reactor with segmented electrodes and Co-Mn/TiO2 catalyst. The introduction of segmented electrodes and the catalyst enhanced the plasma characteristics and increased the generation of active species, favoring the oxidation of chlorobenzene.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Saba Afzal, Humaira Hussain, Muhammad Yasin Naz, Shazia Shukrullah, Irshad Ahmad, Muhammad Irfan, Salim Nasar Faraj Mursal, Stanislaw Legutko, Izabela Kruszelnicka, Dobrochna Ginter-Kramarczyk
Summary: This study tested a new catalyst for converting hydrogen sulfide into hydrogen gas in a non-thermal plasma system. The results showed that the new catalyst efficiently converted hydrogen sulfide into hydrogen gas under certain conditions.
Article
Physics, Applied
Yao Li, De-Zheng Yang, Jun-Jie Qiao, Li Zhang, Xiong-Feng Zhou, Zi-Lu Zhao, Hao Yuan, Er-Yan Yan, Wen-Chun Wang
Summary: This study investigates the conversion and optimization of discharge modes in a packed bed reactor using different dielectric materials under varying peak voltages. The effects of peak voltages and dielectric materials on the production of reactive species were studied for plasma applications. The results show changes in discharge form and mode with peak voltage increases and variations in dielectric constants, resulting in different types and volumes of reactive species produced.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Engineering, Environmental
Duksoo Jang, Hyeonho Lee, Ganghyeon Jeong, Am Jang
Summary: A narrow discharge gap and increased power density can enhance the PM removal efficiency in the system, maintaining a narrow discharge gap is crucial for achieving high energy efficiency and PM removal.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Physics, Multidisciplinary
Henrike Jakob, Matthew Paliwoda, Joshua L. Rovey, Minkwan Kim
Summary: Water contaminants such as endocrine inhibitors, pharmaceuticals, and chlorine treatment by-products are identified as significant hazards to human health. Water adjacent plasma treatment is investigated as a more efficient and effective decontamination method. The degradation of methylene blue is measured to quantify the decontamination effectiveness.
Article
Physics, Applied
Zhi Su, Haohua Zong, Hua Liang, Jun Li, Xiancong Chen
Summary: Pulsed-DC DBD is an effective technique for reducing skin friction drag with limited power consumption. The characteristics of pulsed-DC DBD, including power consumption, induced flow structure, thermal effect, and body force, have been investigated. The results show that the power consumption and pressure waves produced by pulsed-DC DBD are similar to that of DBD using nanosecond pulses, while the wall-bounded jet structure resembles that of DBD using sinusoidal high voltage. The induced body force increases with pulse width, while the thermal effect weakens.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Applied
Xiao-Song Li, Ye-Cheng Li, Li-Yuan Wang, Jing-Lin Liu, Ai-Min Zhu
Summary: This study reports a new real-time measurement method to more accurately evaluate the synergistic effect in plasma catalysis by measuring the axial temperature. The results show that compared to thermal catalysis, plasma catalysis only exhibits a weak synergistic effect. This finding contributes to the accurate assessment of plasma catalysis reactions.
PLASMA PROCESSES AND POLYMERS
(2022)
Article
Engineering, Environmental
Baowei Wang, Xiaoyan Li, Xiaoxi Wang, Bo Zhang
Summary: The study indicates that using filled dielectric materials can significantly improve the conversion rate and energy efficiency of CO2 decomposition technology, with the filled MgO reactor showing the highest performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Zhengkun Liu, Wanglin Zhou, Yaqiong Xie, Feng Liu, Zhi Fang, Guangru Zhang, Wanqin Jin
Summary: A breakthrough strategy that uses plasma technology to enhance CO2 splitting in membrane reactors shows promise in eliminating the need for traditional catalysts and achieving energy-efficient and sustainable conversion processes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Xingyuan Gao, Jinglong Liang, Liqing Wu, Lixia Wu, Sibudjing Kawi
Summary: This paper provides a detailed summary of the applications of dielectric barrier discharge (DBD) plasma in catalytic CO2 hydrogenation, and discusses the design of the reactor and optimization of reaction parameters. Additionally, several mechanisms are explored and proposed solutions to existing challenges are provided.
Article
Engineering, Environmental
Ju Li, Shengjie Zhu, Ke Lu, Cunhua Ma, Dezheng Yang, Feng Yu
Summary: This study utilized grinding balls made of a mixture of ZrO2 and CeO2 as packing material to achieve higher CO2 conversion and energy efficiency. By investigating the effects of discharge power, feed flow rate, packing length, circulating water temperature, and particle size, the researchers were able to understand the performance of the packing material better. The mixture catalyst may have a synergistic effect and outperforms the materials composed of a single substance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Qijin Zhao, Baoquan Mao, Xianghua Bai, Junyan Zhao, Chunlin Chen, Xinxi Zhang, Shuguang Wei, Qiang Gao
Summary: This study experimentally investigates the effects of various electrical parameters on the discharge and thermal characteristics of DBD plasma reactors. The results show that the discharge power and thermal efficiency increase with increasing peak-to-peak voltage, while they vary with frequency and airflow velocity. Additionally, they increase with increasing input airflow temperature.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Giulia De Felice, Sirui Li, Fausto Gallucci, Nima Pourali, Evgeny Rebrov
Summary: Non-oxidative methane coupling in an atmospheric pressure plasma jet reactor was studied. The effect of the tip angle of the high voltage electrode on jet characteristics was investigated. It was found that a sharp angle of the electrode (15 degrees) resulted in increased methane conversion, reduced energy consumption, and decreased carbon deposition.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
H. Taghvaei, E. Pirzadeh, M. Jahanbakhsh, O. Khalifeh, M. R. Rahimpour
Summary: The study demonstrates that filling polyurethane foam can improve the conversion rate and energy efficiency of CO2 dissociation, with plasma performance significantly enhanced when packing materials are coated over the foam. BaTiO3 shows the best performance among the materials tested, leading to a notable increase in conversion rate compared to foam-filled and empty plasma configurations.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Chemical
Tayebeh Marzoughi, Fereshteh Samimi, Mohammad Reza Rahimpour
Summary: Gasification is an efficient technique for sustainable hydrogen production from biomass, and the choice of gasifying agent can affect the efficiency and environmental impact of the process. Different biomass materials show varying performance during the gasification process, with steam gasification of plastic producing the highest hydrogen yield and air gasification of paper generating the lowest. The environmental impacts of the process, in terms of CO2 emission, are also influenced by the type of biomass material and gasifying agent used.
CHEMICAL PRODUCT AND PROCESS MODELING
(2022)
Article
Engineering, Chemical
Tayebeh Marzoughi, Fereshteh Samimi, Mohammad Reza Rahimpour
Summary: The research focused on kinetic modeling of the reduction zone for hydrogen production from various biomass types and compared gasification agents to determine the best biomass and agent for highest hydrogen yield and lowest environmental contamination. Steam gasification of plastic was found to provide the highest hydrogen yield with rubber considered the most environmentally friendly biomass option.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Engineering, Chemical
S. Mohammadzade Fard, M. Farsi, M. R. Rahimpour
Summary: The research focuses on modeling, sensitivity analysis, and multi-objective optimization of the ethylene dimerization process, showing that mass transfer controls the ethylene dimerization rate and investigating the effects of operating pressure and temperature on ethylene conversion and butene selectivity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Chemistry, Applied
Sheida Soltanimehr, Mohammad Reza Rahimpour, Alireza Shariati, Alireza Alipoor
Summary: The paper develops a mathematical model for a new autothermal reformer, which consists of a combustion section and a catalytic section. The model shows good agreement with industrial data and reveals the significant contribution of the initial O2/CH4 and H2O/CH4 ratios on the reformer performance.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Applied
S. Dehghanpoor, M. H. Sedaghat, A. Bakhtyari, M. A. Makarem, M. R. Rahimpour
Summary: This study evaluates a new process for methanol production, which can enhance production and reduce CO2 emissions by converting CO2-rich off-gas.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Applied
Mahboubeh Parhoudeh, Farshad Farshchi Tabrizi, Mohammad Reza Rahimpour
Summary: This study investigates the feasibility of an auto-thermal chemical looping reforming (a-CLR) process in a network of large-scale packed-bed reactors using a dynamic mathematical model. The results show that the proposed a-CLR system can replace the large furnace in the conventional SMR process with a slight decrease in syngas yield. By optimizing the operation conditions, methane conversion and syngas yield can be significantly improved.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Applied
Tayebe Roostaie, Mitra Abbaspour, Mohammad Amin Makarem, Mohammad Reza Rahimpour
Summary: Mesoporous gamma-alumina nanoparticles were synthesized using Morus alba leaves as a biotemplate through various treatment parameters. The nano alumina can be utilized as a catalyst, and its structure was analyzed using conventional techniques. The ammonia desorption and hydrogen reduction techniques were used to determine the acidity and reduction of the nano alumina sample.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Physical
Parvin Kiani, Maryam Meshksar, Mohammad Reza Rahimpour
Summary: This study investigates the modification of Ni/SBA-16 catalyst with a lanthanum promoter for the conversion of biogas to syngas. The parameters of reaction temperature, lanthanum loading, and nickel loading are varied to maximize the reaction conversions. The presence of La2O3 particles on the catalyst's surface enhances dispersion and reduces particle size, leading to high conversion rates and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Maryam Meshksar, Fatemeh Salahi, Fatemeh Zarei-Jelyani, Mohammad Reza Rahimpour, Mohammad Farsi
Summary: This study focuses on controlling the morphology and crystalline phase of hollow Al2O3 spheres as a supporting material for Ni-based catalysts in high-temperature steam methane reforming process. Among the parameters investigated, the 20Ni/H-Al2O3 catalyst exhibited the highest CH4 conversion and H-2 yield at 700 degrees C, showing stable performance with low carbon deposition during the reaction.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Zolfa Zokaee, Niyaz Mohammad Mahmoodi, Mohammad Reza Rahimpour, Alireza Shariati
Summary: In this study, a MIL-53(Al)@TiO2 photocatalyst with high photocatalytic performance under visible light was successfully fabricated using a solvothermal method. The composite showed improved photocatalytic activity compared to MIL-53(Al) and TiO2, thanks to the synthesis strategy adopted in the composite synthesis.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Applied
Abbas Ghareghashi, Hamidreza Bagheri, Sattar Ghader, Sasan Ghasemi, Mohammad Reza Rahimpour, Amir Sarrafi
Summary: This study investigates the increase in ethylene production through the oxidative coupling of methane (OCM) process and the oxidative dehydrogenation of ethane (ODHE) as a supplemental process in a consecutive reactor media. The proposed configuration improves operative conditions and enhances ethylene production in consecutive reactors. The study analyzes the effects of reactant ratio, temperature, and pressure on conversions, product yields, and selectivities. The results show that increasing the CH4/O2 ratio decreases ethylene yield, while increasing contact time improves ethane conversion rate.
TOPICS IN CATALYSIS
(2022)
Article
Energy & Fuels
Hafez Bajzadeh, Mohammad Reza Rahimpour, Mohammad Khorram, Saman Mohammadzadeh
Summary: In this study, a simulation was conducted to model an efficient process for direct CO2 hydrogenation to produce methanol using Ga3Ni5 catalyst. The results showed that the Ga3Ni5 catalyst had a conversion rate of carbon dioxide to methanol that was 13.75% higher compared to the traditional Cu/ZnO/Al2O3 catalyst. Therefore, this new catalyst has the potential to replace the traditional synthesis process.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Environmental
Maryam Meshksar, Mohammad Farsi, Mohammad Reza Rahimpour
Summary: The research investigates the effect of Ni active site position and synthesis route on the performance of Ce promoted Ni/Al2O3 catalyst in the steam reforming of methane. The results show that the catalyst synthesized via co-precipitation method, specifically the 20Ni-1.5Ce/Al2O3 catalyst, exhibits the best performance in producing H-2-rich syngas with low CO2 contents.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Donya Danesh, Mohammad Farsi, Mohammad Reza Rahimpour
Summary: This research focuses on heterogenous modeling of benzene alkylation in three phase reactors, coupling kinetic and equilibrium models and optimizing process conditions to enhance production capacity. By considering temperature of inlet streams as decision variables, the study successfully improved ethylbenzene production rate by optimizing system conditions.
CHEMICAL PRODUCT AND PROCESS MODELING
(2022)
