Article
Environmental Sciences
Uma Dwivedi, K. K. Pant, S. N. Naik
Summary: The study focused on the catalytic cracking of polymer mixtures to produce gasoline and diesel range hydrocarbons using MWW and MFI type zeolites, revealing that MWW zeolite selectively provides gasoline range hydrocarbons while MFI zeolite results in a different range of hydrocarbons. Analysis of zeolite acidity showed that lower SAR zeolite generates higher yield of liquid hydrocarbons compared to higher SAR zeolite, indicating the importance of acidity in hydrocarbon production. The study provides a detailed comparative analysis on plastic degradation using MFI and MWW type zeolites.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Materials Science, Multidisciplinary
Zachary R. Hinton, Michael R. Talley, Pavel A. Kots, Anne Le, Tan Zhang, Michael E. Mackay, Aditya M. Kunjapur, Peng Bai, Dionisios G. Vlachos, Mary P. Watson, Michael C. Berg, Thomas H. Epps, LaShanda T. J. Korley
Summary: This review discusses the current state of plastic waste valorization and innovations from a materials research perspective. By combining diverse capabilities and strategies, it addresses end-of-life challenges for plastics at every stage and unlocks the potential of polymers and plastic waste.
ANNUAL REVIEW OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Applied
Haoran Yuan, Chengyu Li, Rui Shan, Jun Zhang, Yufeng Wu, Yong Che
Summary: This review summarizes the recent advancements in catalytic pyrolysis of polyolefin plastics using various zeolite-based materials. It focuses on the production of aromatic hydrocarbons from zeolite-catalyzed polyolefin plastics pyrolysis and discusses the characteristics and distribution of the pyrolysis products. Additionally, it systematically discusses the deactivation mechanism of zeolites, coking inhibition, catalyst regeneration, and the influence of impurities. The challenge and outlook in the sustainable development of catalytic pyrolysis of polyolefin plastics into high-value products are also presented.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yuan Hu, Chan Wang, Tiesen Li, Xiaojun Bao, Yuanyuan Yue
Summary: This study successfully synthesized aluminum-rich hierarchical ZSM-5 zeolite by using a nitrogen- and halogen-free polymer. The polymer acted as a template for constructing the hierarchical micro/mesoporous structure of the zeolite and also as a crystal growth modifier for forming single-crystalline zeolite. The resulting zeolite exhibited better catalytic performance in the conversion of waste plastic into hydrocarbons compared to commercial zeolite.
Article
Engineering, Environmental
M. F. Paucar-Sanchez, M. Calero, G. Blazquez, M. J. Munoz-Batista, M. A. Martin-Lara
Summary: This study investigated the thermal pyrolysis of plastic waste to obtain liquid oil and examined the effects of different conditions on the yield and properties of the oil. The results contribute to improving the efficiency of waste plastic utilization and provide fundamental data for the production and application of pyrolytic oils.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Jibo Qin, Yibo Dou, Jianchi Zhou, Victor M. Candelario, Henrik Rasmus Andersen, Claus Helix-Nielsen, Wenjing Zhang
Summary: The conversion of waste plastic into high-value-added chemicals is considered a promising approach to address global plastic pollution and promote the circular economy. This study developed a partial calcination strategy to create a zinc oxide/UiO66-NH2 heterojunction for photocatalytic valorization of plastic. The obtained heterojunction exhibited high activity for converting polylactic acid and polyvinyl chloride into acetic acid, along with hydrogen production. This work provides insights into the process of photocatalytic valorization of plastic and offers a feasible strategy for designing heterojunction photocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Meriem Dahou, Souad Hammadou Nee Mesdour, Omar Kaddour, Hadj Mimoun
Summary: In this study, polyethylene-pyrolysis under vacuum was used to obtain cracking-oils as substitutes for petro-diesel. The liquid fraction was dominated by paraffinic and olefin compounds, and the fuel qualities were similar to commercial-diesel, making it suitable for clean-fuel production.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Article
Construction & Building Technology
Rong Xiao, Qinghan Yu, Haoran Ye, Yang Shi, Yequan Sheng, Minglong Zhang, Pejman Nourani, Shengbo Ge
Summary: Plastics waste is a major global pollution problem due to its high production volume and resistance to decomposition. This study presents a promising strategy of using plastic waste as feedstock to produce wood plastic composites, providing a solution for reutilizing plastic waste. The researchers developed a one-step hot molding method to prepare high-performance wood plastic composites, which exhibit enhanced mechanical properties and are suitable for use in construction and furniture.
JOURNAL OF BUILDING ENGINEERING
(2023)
Review
Thermodynamics
S. Kartik, Hemant Kumar Balsora, Manisha Sharma, Agus Saptoro, Rakesh K. Jain, Jyeshtharaj B. Joshi, Abhishek Sharma
Summary: The recycling of waste plastics is an important solution to address future fuel economy pressure and environmental concerns. This review focuses on investigating the potential of pyrolysis as a recycling method to convert waste plastics into fuel and value-added products. The study examines the process conditions and reaction mechanisms to maximize the production of usable fractions and value-added chemicals through pyrolysis. Discussions on process development and future research directions are also presented.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2022)
Article
Engineering, Mechanical
Linglin Li, Yangming Gao, Yuqing Zhang
Summary: The study found that bio-oil delays fatigue crack initiation, while LDPE accelerates it, and unaged bitumen dominates crack propagation. The fatigue performance of bitumen was not significantly altered by bio-oil after PAV ageing. However, PAV-aged LDPE modified bitumen is more prone to fatigue crack initiation but has the same crack propagation rate as PAV-aged control bitumen.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Environmental
Xiaoli Zhou, Biao Wu, Xiujuan Qian, Lijie Xu, Anming Xu, Jie Zhou, Min Jiang, Weiliang Dong
Summary: This study presents a process concept for converting Polyethylene waste into microbial lipid through tandem catalytic pyrolysis and biological conversion. The carbon footprint analysis evaluates the sustainability of this upcycling process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Textiles
Savvoula A. A. Mpika, Nikolaos F. F. Nikolaidis, Dimitrios N. N. Bikiaris, Evangelia C. C. Vouvoudi, Nikolaos K. K. Lazaridis
Summary: This study aims to separate PET flakes from binary polymer blends and a mixture of five common polymers using floatation technique. The separation was performed in a Plexiglas air floatation column using a non-ionic surfactant. The parameters studied were pH values, surfactant concentration and treatment time. The results showed effective separation of polyester with a recovery rate of up to 95 +/- 2% and good dyeing properties using three disperse dyes.
FIBERS AND POLYMERS
(2023)
Article
Chemistry, Physical
Karolina A. Tarach, Mariame Akouche, Kamila Pyra, Valentin Valtchev, Gabriela Jajko, Jean -Pierre Gilson, Kinga Gora-Marek
Summary: This study focuses on a series of ZSM-5 zeolites (embryonic, microporous, hierarchical) in the catalytic cracking of polypropylene for its chemical recycling. The porosity and acidity of the zeolites are two crucial features that impact their catalytic performances, as well as catalyst deactivation and regeneration. A detailed thermogravimetric and spectroscopic analysis reveals the emergence of rules for designing efficient catalysts for use in existing or grass-roots FCC units.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Environmental Sciences
Ashish Soni, Pankaj Kumar Das, Mohammad Yusuf, Syahrir Ridha, Hesam Kamyab, Shreeshivadasan Chelliapan, Irina Kirpichnikova, Zainab Haider Mussa
Summary: The research proposes an effective approach for recycling waste plastics and agro-industrial waste as an energy source, optimizing their economic viability and reducing environmental issues. Composites made from different types of waste plastics, rice husk, and sand were evaluated for their density, water absorption, compressive strength, flexural strength, sliding wear rate, and three-body abrasive wear. The study suggests incorporating 25 wt. % of rice husk ash and 25 wt. % of sand with 50 wt. % of polycarbonates in composites for tribological applications. Overall, this work contributes to the achievement of a circular economy in composite manufacturing industries.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Green & Sustainable Science & Technology
Bo Sun, Jie Zhang, Maolin Wang, Shixiang Yu, Yao Xu, Shuheng Tian, Zirui Gao, Dequan Xiao, Guosheng Liu, Wu Zhou, Meng Wang, Ding Ma
Summary: The authors developed a two-step catalytic process to convert PLA into methyl methacrylate, achieving sustainable valorization of waste PLA and reducing CO2 emissions.
NATURE SUSTAINABILITY
(2023)
Article
Nanoscience & Nanotechnology
Bastian Reiprich, Karolina A. Tarach, Kamila Pyra, Gabriela Grzybek, Kinga Gora-Marek
Summary: Layer-like FAU-type zeolite Y was successfully synthesized by an organosilane-assisted low-temperature hydrothermal method, and its catalytic activity in LDPE cracking was verified. The structure and properties of zeolite Y were analyzed using various techniques, and its catalytic performance and coking were evaluated through experiments on catalyst selectivity and coke residue.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Gabriela Grzybek, Kinga Gora-Marek, Karolina Tarach, Kamila Pyra, Piotr Patulski, Magdalena Greluk, Grzegorz Slowik, Marek Rotko, Andrzej Kotarba
Summary: In this study, the impact of potassium on the performance of cobalt-zeolite catalysts in ethanol steam reforming process was investigated. The presence of potassium altered the reaction mechanism, leading to a decrease in ethanol conversion and reduced production of undesired ethylene.
JOURNAL OF CATALYSIS
(2022)
Correction
Materials Science, Multidisciplinary
Zheng Zhang, Diana L. Santangelo, Gert ten Brink, Bart J. Kooi, Jacob A. Moulijn, Ignacio Melian-Cabrera
Article
Chemistry, Physical
Magdalena Greluk, Marek Rotko, Grzegorz Slowik, Sylwia Turczyniak-Surdacka, Gabriela Grzybek, Kinga Gora-Marek, Andrzej Kotarba
Summary: The effect of a potassium promoter on the stability and resistance to carbon deposit formation of Ni/MnOx catalyst under SRE conditions was investigated. The addition of a low amount of potassium improved the catalyst's stability by limiting carbon formation and increasing the rate of steam gasification of carbon.
Article
Chemistry, Physical
Magdalena Jablonska, Kinga Gora-Marek, Paolo Cleto Bruzzese, Ana Palcic, Kamila Pyra, Karolina Tarach, Marko Bertmer, David Poppitz, Andreas Poeppl, Roger Glaeser
Summary: In this study, nanosized Cu-containing ZSM-5 catalysts with different n(Si)/n(Al) ratios ranging from 18.9 to 50.5 were prepared by ion-exchange. Physico-chemical characterization revealed that the nature and distribution of copper species are influenced by the molar ratio of framework T atoms. Spectroscopic analyses, including DR UV-Vis, TPR-H-2, EPR, and FT-IR, indicated that the amount of aggregated copper species increases with an increase in the framework n(Si)/n(Al) ratio. The activity of Cu-containing ZSM-5 in the NH3-SCR-DeNO(x) reaction significantly decreases when the n(Si)/n(Al) ratio is between 47.0 and 50.5 compared to other materials with n(Si)/n(Al) ratios of 18.9-19.6. The mechanism of the reaction was discussed based on 2D COS analysis of IR spectra and the catalytic properties of zeolites.
Article
Engineering, Environmental
Juan J. Mercadal, Alvaro Mayoral, Jose Luis G. Fierrod, Enrique Garcia-Bordeje, Ignacio Melian-Cabrera
Summary: By purifying the raw SWCNT in one step, lowering the MeOx concentration and generating surface C=O groups, the catalytic performance of SWCNT in the oxidative dehydrogenation of ethylbenzene was significantly improved. The textural improvement and MeOx removal contributed to the enhancement of EB conversion, ST selectivity, and reduction of COx selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Correction
Chemistry, Physical
Juan J. Mercadal, Dmitrii Osadchii, Valeriya Zarubina, Maria Jose Valero-Romero, Ignacio Melian-Cabrera
MOLECULAR CATALYSIS
(2023)
Article
Nanoscience & Nanotechnology
Monika Szufla, Jorge A. R. Navarro, Kinga Gora-Marek, Dariusz Matoga
Summary: Intentional defects introduced into solid materials provide opportunities for controlling and tuning their diverse physicochemical properties. In this study, we successfully introduced missing-linker defects into a sulfonated proton conductive 2D zirconium-based MOF (JUK-14) using a facile post-synthetic approach. We compared the stability and performance of the resulting materials, including proton conductivity and adsorption of N-2, CO2, and H2O molecules. We also discussed the presence of interlayer counterions and their effect on the properties and stability, and the potential application of our defect engineering approach to other layered MOFs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Monika Fedyna, Bartosz Mozgawa, Filip Zasada, Kinga Gora-Marek, Joanna Grybos, Witold Piskorz, Chengyang Yin, Zhen Zhao, Piotr Pietrzyk, Zbigniew Sojka
Summary: Isotopic labeling experiments were conducted to investigate the SCR reaction over CuSSZ-13 zeolites. The reactions were characterized using various techniques, and the results were interpreted using DFT and thermodynamic modeling. The study revealed the temperature regions and identified the main processes and intermediates involved in different stages of SCR reactions. A 2D diagram was constructed to conceptualize the SCR reaction and rationalize the reaction mechanism.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Ignacio Melian-Cabrera, Valeriya Zarubina
Summary: The surface area of porous materials is commonly used in catalysis and adsorption. The Brunauer-Emmett-Teller (BET) model is often applied, but volume can be a more appropriate parameter when considering reactor and adsorption column design. This study introduces the concept of volumetric surface area and highlights the importance of considering bulk density when comparing surface areas for materials where volume is critical.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Karolina A. Tarach, Mariame Akouche, Kamila Pyra, Valentin Valtchev, Gabriela Jajko, Jean -Pierre Gilson, Kinga Gora-Marek
Summary: This study focuses on a series of ZSM-5 zeolites (embryonic, microporous, hierarchical) in the catalytic cracking of polypropylene for its chemical recycling. The porosity and acidity of the zeolites are two crucial features that impact their catalytic performances, as well as catalyst deactivation and regeneration. A detailed thermogravimetric and spectroscopic analysis reveals the emergence of rules for designing efficient catalysts for use in existing or grass-roots FCC units.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Karolina A. Tarach, Joaquin Martinez-Triguero, Susana Valencia, Kamila Wojciechowska, Fernando Rey, Kinga Gora-Marek
Summary: The catalytic performance improvement of hierarchical zeolites TNU-9 and IM-5 was studied by conducting a series of acid-catalyzed cracking reactions. The characterization of acid sites in the zeolites was analyzed using in situ FT-IR studies of pyridine, carbon monoxide, and 2,6-di-tert-butylpyridine sorption. The results showed that hierarchical zeolites derived from NaOH had the highest acidity and exhibited better catalytic performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Gabriela Grzybek, Magdalena Greluk, Piotr Patulski, Pawel Stelmachowski, Karolina Tarach, Grzegorz Slowik, Marek Rotko, Susana Valencia, Fernando Rey, Kinga Gora-Marek
Summary: The focus of the ongoing global energy transformation is on hydrogen production in the ethanol steam reforming (ESR) process. Researchers have successfully developed a cobalt catalyst based on the ZSM-5 zeolite support, and analyzed its performance using various physicochemical characterization methods and real-time UV-Vis and FT-IR spectroscopy studies in the ESR conditions. The influence of potassium introduction and the impact of zeolite acidity on the cobalt phase oxidation state were also investigated. The study results challenge the existing paradigm of low activity and stability of zeolite-based ESR catalysts, and provide hope for the development of competitive catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Rujito S. R. Suharbiansah, Muhammad Fernadi Lukman, Chiara Nannuzzi, Anna Wach, Kinga Gora-Marek, Michael Liebau, Ana Palcic, Andreas Poeppl, Gloria Berlier, Silvia Bordiga, Roger Glaeser, Magdalena Jablonska
Summary: Two series of zeolite Y with different particle sizes (approximately 100 or 400 nm) were prepared using different synthesis gel compositions, ageing, and hydrothermal steps. Copper-containing zeolite Y samples were obtained through ion-exchange and characterized. The catalytic activity of these materials varied significantly due to the different copper species present.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
