Article
Engineering, Environmental
Bin Xu, Jianjun Xie, Nantao Wang, Yanqin Huang, Huacai Liu, Xiuli Yin, Chuangzhi Wu, Xin Tu
Summary: Steam reforming of toluene was conducted in a DBD plasma reactor with Ni/γ-Al2O3 catalysts. The study investigated the effects of reaction temperature, catalyst calcination temperature, and permittivity of packing materials on the reaction performance and synergistic effect of plasma catalysis. The results showed that toluene conversion initially decreased and then increased with temperature, achieving a high conversion rate of 87.1% at 450°C. Catalysts prepared at lower calcination temperatures or with higher permittivity packing materials exhibited better performance due to larger Ni surface area and higher surface discharge. The study highlighted the potential of this approach for sustainable hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Yishuang Wang, Zhiheng Lu, Mingqiang Chen, Defang Liang, Jun Wang
Summary: Tar formation is a major challenge in biomass gasification, but catalytic steam reforming (CSR) can potentially convert tar into hydrogen. This study successfully prepared a series of NixFeyMn/ATP catalysts and applied them to CSR of toluene, a model tar compound. The addition of trace amounts of Fe and Mn improved the catalyst's stability and activity.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Multidisciplinary
Jie Ren, Fei-Long Yang, Yi-Ling Liu
Summary: This study developed a Ni/MgAl catalyst with excellent activity and stability for toluene conversion, which was further optimized to show remarkable performance in H-2-rich gas production. Characterization and experimental investigations revealed the reaction and deactivation pathways, leading to the identification of the most active catalyst Ni/MgAl-10.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Review
Green & Sustainable Science & Technology
Ningbo Gao, Jamilu Salisu, Cui Quan, Paul Williams
Summary: The gasification of biomass produces syngas for electricity generation and fuels production, but tar generated as a by-product causes issues. Catalytic steam reforming with nickel-based catalysts can convert tar into more syngas efficiently. Research has focused on modifying nickel-based catalysts to improve performance in steam tar reforming.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Yang Du, Shi-Qi Yang, Yun-Jie Li, Zhi-Bin Wang, Xing-Bao Wang, Zhen-Yi Du, Wen-Ying Li
Summary: It was found that introducing an appropriate amount of potassium (K) can enhance the activity and stability of nickel-alumina catalysts in the steam reforming of coal/biomass tar. K doping enhances the adsorption capability of the catalysts, reducing the amount and graphitization degree of carbon deposits. Moreover, K doping reduces the acidity of the catalyst support, inhibiting the formation of carbon deposits. This study is of great significance for improving the industrial application of nickel-based catalysts.
Article
Chemistry, Applied
Siqian Zhang, Wanpeng Hu, Xiaan Xiang, Haiyang Xu, Zhangfeng Shen, Yanan Liu, Qineng Xia, Zhigang Ge, Yangang Wang, Xi Li
Summary: In this study, efficient catalytic steam reforming of biomass tar was achieved using a Ni-Fe-Ce hydrotalcite-derived structured reactor, demonstrating superior catalytic performance and stability. The presence of Ce, the distorted channels of monolithic wood, and the graphitic carbon layer played key roles in improving catalyst dispersion and preventing coke formation. This work suggests that the Ni-Fe-Ce hydrotalcite-derived structured reactor is potentially cost-effective for various high-temperature applications.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
S. Sayas, N. Vivo, J. F. Da Costa-Serra, A. Chica
Summary: The study demonstrates that nickel catalyst supported on sepiolite exhibits promising catalytic performance in steam reforming of toluene, especially when prepared using precipitation method. This alternative method results in a catalyst with higher activity, selectivity to hydrogen, and lower production of undesirable by-products compared to the traditional incipient wetness impregnation method.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Yinsheng Zhang, Xuehua Zou, Haibo Liu, Ye Chen, Shiwei Dong, Minghao Ji, Dong Chen, Chengrui Xu, Heng Xie, Chengzhu Zhu, Steve L. Suib, Tianhu Chen
Summary: Four abundant minerals (Diatomite, Montmorillonite, Halloysite, and Sepiolite) were used to prepare Fe-Ni based catalysts for steam reforming of toluene. The catalyst with diatomite support showed the best catalytic activity, achieving the highest toluene conversion and gas yields at a reaction temperature of 700 degrees C and S/C molar ratio of 1.0.
Review
Chemistry, Physical
Wen Tang, Jing-Pei Cao, Zi-Meng He, Wei Jiang, Zhi-Hao Wang, Xiao-Yan Zhao
Summary: Catalytic tar reforming is a promising technology for converting tar into syngas and chemicals. This review focuses on the catalyst design and preparation for low-temperature reforming of biomass tar, and discusses the adjustment of catalyst structure, deactivation mechanism, and reforming mechanism.
Article
Chemistry, Physical
Lole Jurado, Vasiliki Papaefthimiou, Sebastien Thomas, Anne-Cecile Roger
Summary: In this study, La-based perovskite-supported Ni materials were synthesized and evaluated for their catalytic performance in tar reforming during biomass gasification. While both Ni/LSCF and Ni-LSCF showed similar catalytic stability and activity in tar reforming, Ni-LSCF exhibited better performance in water gas shift reaction and resistance to coke formation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Chemical
David Diez, Ana Uruena, Gregorio Antolin
Summary: This study successfully synthesized a catalyst based on layered double hydroxides for steam reforming of toluene, achieving high gas conversion rates. The catalyst showed better performance at higher temperatures and appropriate S/C ratios, with the type of carbon deposited on the catalyst having minimal impact on its performance.
Article
Chemistry, Multidisciplinary
Lina Garcia, Misael Cordoba, Liza Dosso, Franco Nardi, Carlos Vera, Monica Quiroga, Mariana Busto, Juan Badano
Summary: This study demonstrates the effectiveness of using different catalysts for reforming tars in biomass gasification syngas to produce high-quality syngas. The researchers used a bench scale equipment consisting of an autothermal fluidized bed gasifier and a downstream packed bed reformer. The best catalyst for tar reforming was found to be pyrolysis char, which reduced tar content to less than 1 g/Nm3 in the product gas.
Article
Thermodynamics
Wen Tang, Jing-Pei Cao, Zhi-Hao Wang, Zi-Meng He, Tian-Long Liu, Ze-Ying Wang, Fei-Long Yang, Jie Ren, Xiao-Yan Zhao, Xiao-Bo Feng, Hong-Cun Bai
Summary: The study demonstrates that using acid-washed and oxidized Shengli lignite char as a carbon precursor to load cobalt nano-catalyst shows higher activity and stability in low temperature steam reforming of biomass tar, with relatively high H-2 production and low E-a value.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Environmental
Bin Xu, Jianjun Xie, Huacai Liu, Wenshen Yang, Xiuli Yin, Chuangzhi Wu
Summary: In this study, the partial oxidation of toluene as a biomass tar surrogate was investigated in a dielectric barrier discharge (DBD) plasma reactor. The effect of reaction temperature, O2/toluene molar ratio (OTR) and discharge power on performances was studied. The results showed that higher temperatures, OTRs and discharge power led to better performances by promoting toluene destruction and gas product production. Excited N2 species played a crucial role in the process, and the method showed potential for gasification gas purification.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Chemistry, Physical
Shuyu Zhou, Zezhi Chen, Huijuan Gong, Lu Chen, Huiqiang Yu
Summary: In this study, three-dimensional ordered macro/mesoporous Ce0.8Zr0.1M0.1 solid solutions were prepared as the carriers for Ni/Ce0.8Zr0.1M0.1 catalysts to catalyze the steam reforming of toluene (SRT). The results showed that the Ni/Ce0.8Zr0.1M0.1 catalysts exhibited excellent low-temperature catalytic activity, with Ni/Ce0.8Zr0.1Pr0.1 catalyst showing the highest toluene conversion rate.
Review
Energy & Fuels
Oki Muraza
Summary: Sustainable energy and fuels for personal vehicles are becoming increasingly important. Transitioning from gasoline to biomass-derived liquid fuels, then to compressed natural gas, hydrogen fuel, and electric vehicles has been key in minimizing carbon pollution. Challenges remain in each generation of fuels, requiring better catalysts and energy storage materials.
Article
Engineering, Chemical
Galal A. Nasser, Ali A. Al-Qadri, Anas Karrar Jamil, Idris A. Bakare, Mohammed A. Sanhoob, Oki Muraza, Zain H. Yamani, Toshiyuki Yokoi, Qasim Saleem, Donya Alsewdan
Summary: The study investigated a series of chabazite-based catalysts that facilitate the methanol to olefins reaction, comparing the effects of different treatment methods on their reaction performance. The results showed that the catalyst modified by steam and acid treatment exhibited better stability in the MTO process.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Oluwole Ajumobi, Yang Su, Azeem Farinmade, Lei Yu, Jibao He, Julia A. Valla, Vijay T. John
Summary: This study demonstrates the integration of ceramic nanostraws into ordered mesoporous silica MCM-41 to mitigate diffusional restrictions in porous catalysts. The method shows a 50% increase in effectiveness factor, offering implications for catalysis and separation technologies. The easy and scalable synthesis technique complements traditional catalyst preparation methods.
ACS APPLIED NANO MATERIALS
(2021)
Article
Thermodynamics
A. Adnan, Arif Hidayat, Mohammad M. Hossain, Oki Muraza
Summary: A new gasification technology has been proposed for converting low-rank coal to clean syngas and electricity with improved energy and exergy efficiencies under specific conditions.
Article
Energy & Fuels
Lei Yu, Azeem Farinmade, Oluwole Ajumobi, Vijay T. John, Julia A. Valla
Summary: The study proposed a method to produce gasoline and diesel grade biofuels from biomass in a single step using a Ni-ZSM-5/Ni-MCM-41 composite. The composite enhanced alkane and methane production without sacrificing yields to monoaromatic hydrocarbons. This unique composite enables the completion of two-step tandem reactions in one step, leading to a self-sustainable and intensified process.
Article
Chemistry, Physical
Saheed A. Ganiyu, Oluwole Ajumobi, Abdulkadir Tanimu, Ismail Abdulazeez, Salawu Omobayo Adio, Qamarrudin Muhammad, Khalid Alhooshani
Summary: This study focused on the synthesis and application of activated carbon in removing DBT and DMDBT from isooctane, showing that the adsorbent synthesized from agricultural waste material exhibited high surface area and porosity. DFT calculations predict the selectivity of the activated carbon towards DMDBT, with results indicating that DMDBT preferentially adsorbs onto adsorbents with larger pore sizes and volumes. Thorough studies on the adsorbent's performance in removing organosulfur compounds revealed that process parameters such as pyrolysis temperature and ramping rate play crucial roles in determining the adsorbent's efficiency.
SURFACES AND INTERFACES
(2021)
Article
Energy & Fuels
Muflih A. Adnan, Mohammad M. Hossain, Md Golam Kibria
Summary: Municipal solid waste (MSW) can be a potential sustainable energy source. Research has shown that gasification can effectively convert waste into electricity and chemical products.
Article
Chemistry, Physical
Is Fatimah, Gani Purwiandono, Arif Hidayat, Suresh Sagadevan, Azlan Kamari
Summary: A magnetically separable nanocomposite of gamma-Fe2O3/montmorillonite (gamma-Fe2O3/Mt) with high photocatalytic activity for rhodamine B photodegradation has been successfully synthesized. The nanocomposite consists of uniformly dispersed gamma-Fe2O3 nanoparticles in a montmorillonite structure, and its degradation mechanism involves a significant contribution of the adsorption mechanism. The nanocomposite can be easily separated and reused due to its magnetism, without any chemical change even after repeated cycles.
CHEMICAL PHYSICS LETTERS
(2022)
Review
Chemistry, Applied
Ahmad Galadima, Ahmad Masudi, Oki Muraza
Summary: This paper evaluates the potential of cellulose-to-glucose reaction and transformation into fuels/chemicals, and analyzes the roles of catalysts such as ionic liquids, sulfonated mesoporous carbon systems, and Fe-modified zeolites in the process. It also discusses the parameters and catalyst-stability challenges of the upgrading process, and provides new directions for further research.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Ali. A. Al-Qadri, Galal A. Nasser, Ahmad Galadima, Oki Muraza
Summary: Liquified petroleum gas (LPG) is widely used due to its high heating value and clean combustibility. The synthesis of LPG from syngas can be achieved through direct, indirect, or semi-direct methods. Factors affecting the process performance include reaction temperature and pressure. The catalyst, particularly the type of zeolite used, plays a crucial role in the process.
Article
Chemistry, Multidisciplinary
Mohammed A. Sanhoob, Emad N. Shafei, Abuzar Khan, Galal A. Nasser, Idris Bakare, Oki Muraza, Mohammed Z. Al-Bahar, Ali N. Al-Jishi, Hameed H. Al-Badairy, Aniz C. Ummer
Summary: This study focuses on tuning the synthesis conditions of MFI zeolites to improve catalytic properties by optimizing mesoporosity, the balance between Bronsted and Lewis sites, and zeolite particle sizes. Different silicon sources and synthesis temperatures have significant effects on the structure and functionality of MFI zeolites, which in turn impact the shape selectivity of catalytic cracking reactions.
Article
Engineering, Multidisciplinary
Fadilla Noor Rahma, Arif Hidayat
Summary: This study used ZrO2/Bagasse fly ash as a solid catalyst to convert Free Fatty Acid (FFA) into biodiesel. The catalyst was characterized and tested for esterification of FFA. The highest conversion was achieved under the optimal reaction conditions, and the catalyst could be reused multiple times. The study also proposed a kinetic model and determined the reaction kinetics and adsorption equilibrium parameters.
INTERNATIONAL JOURNAL OF TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Elsa Dwi Ana Santosa, Muchammad Tamyiz, Suresh Sagadevan, Arif Hidayat, Is Fatimah, Ruey-an Doong
Summary: The purpose of this study is to convert bauxite mining tailing waste into magnetic nanocomposite as a catalyst in the catalytic wet peroxidation of tetracycline. The obtained nanocomposite showed excellent catalytic activity and adsorption capability for the removal of tetracycline. It also exhibited stability and easy separation due to its magnetic properties.
RESULTS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Emad N. Shafei, Ahmad Masudi, Zain H. Yamani, Oki Muraza
Summary: Nanozeolite-Y was modified using different methods and the effects on the zeolite acid sites were analyzed. It was found that the modification methods caused changes in the acidity of the zeolite, altering the acid sites. Additionally, the catalytic evaluation revealed that the evolution and product transformation of nanozeolite-Y led to catalyst deactivation.
Article
Engineering, Environmental
Emad N. Al-Shafei, D. Robert Brown, Sai P. Katikaneni, Hameed Al-Badairy, Oki Muraza
Summary: The study investigated propane dehydrogenation assisted by CO2 using zirconia and titania catalysts. The increase of CO2 ratio led to higher propylene selectivity, while increasing the CO/H-2 ratio was important for olefins yield and catalytic stability. The presence of CO2 played an important role in enhancing propane dehydrogenation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
