Article
Energy & Fuels
E. N. Vlasova, A. A. Porsin, P. Aleksandrov, A. L. Nuzhdin, G. A. Bukhtiyarova
Summary: The co-hydroprocessing of SRGO and RSO mixture over the stacked bed sulfide catalytic system showed that temperature and pressure had a significant impact on product quality and n-C18H38 conversion. Increasing temperature from 350°C to 380°C led to a decrease in cloud point due to higher n-C18H38 conversion, while increasing pressure from 4.0 MPa to 7.0 MPa decreased n-C18H38 conversion. The presence of NH3 was found to inhibit hydrocracking/hydroisomerization reactions in the co-processing of RSO-SRGO mixtures.
Article
Chemistry, Physical
Xiang Li, Xuerong Zhou, Lin Wang, Jinyin Lv, Shengnan Liu, Roel Prins, Anjie Wang, Qiang Sheng
Summary: The desulfurization of 2-phenylcyclohexanethiol was studied over different catalysts under H2 and Ar atmospheres. It was found that Ni and Co had different promoting effects on the desulfurization pathways under different conditions.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Fa-Peng Wu, Le-Le Qiu, Yun-Peng Zhao, Zong-Pin Fu, Jian Xiao, Jian Li, Fang-Jing Liu, Jing Liang, Jing-Pei Cao
Summary: Catalytic hydrodeoxygenation (HDO) of phenolic compounds using NiFeAlOx catalysts was investigated. The Ni/Fe/Al ratio of 3/0.5/2.5 catalyst exhibited developed textural properties, small metal particles, abundant oxygen vacancies, and acid sites. HDO of guaiacol proceeded through two pathways depending on the hydrogen source. The Ni3Fe0.5Al2.5Ox catalyst maintained good performance after five recycle experiments and showed excellent universality for selective HDO of other phenolic compounds.
FUEL PROCESSING TECHNOLOGY
(2023)
Review
Energy & Fuels
Man Lang, Hao Li
Summary: This review highlights recent achievements in catalysts for the hydrodeoxygenation conversion of lignin-derived phenolics into cyclohexane. The characteristics and reaction mechanisms of novel catalysts are summarized and discussed, aiming to provide a perspective for the design and development of highly active catalysts. Furthermore, suggestions for improving existing challenges and potential opportunities in this field are presented to inspire scientists to utilize biomass resources in fuel and chemical production.
Article
Energy & Fuels
Jing Cao, Youming Zhang, Xinyi Liu, Cen Zhang, Zelong Li
Summary: Co-promoted MoS2 catalysts were evaluated for the hydrodeoxygenation (HDO) of phenolics in bio-oil. The study found that the Co-Mo-S catalyst showed higher intrinsic activity and stronger synergy between Co dopant and MoS2 compared to the CoS2/MoS2 catalyst.
Article
Energy & Fuels
Pojawan Aiamsiri, Dusadee Tumnantong, Boonyawan Yoosuk, Chawalit Ngamcharussrivichai, Pattarapan Prasassarakich
Summary: This research investigated the performance of unsupported and γ-Al2O3 supported Ni-Mo catalysts for palm oil deoxygenation to biohydrogenated diesel. It was found that the hydrothermal method for preparing 0.2-NiMoS2 catalyst was efficient, while the H-NiMoS2/γ-Al2O3-0.2 catalyst prepared using a one-step hydrothermal method showed good HDO activity. Both catalysts could be reused for at least three cycles while maintaining good performance.
Article
Energy & Fuels
Rafael Belo Duarte, Marcos Lucio Corazza, Joao Lourenco Castagnari Willimann Pimenta, Luiz Mario de Matos Jorge
Summary: A kinetic study of glycerol hydrodeoxygenation (HDO) on NiMo2C/Al2O3 and Al2O3 catalysts, prepared by sol-gel technique, was conducted at high glycerol concentration (95wt%) in a batch reactor, from 250 degrees C to 285 degrees C. The catalysts' structural and surface properties were characterized, and it was found that impregnation of alumina with Ni and Mo followed by carburization increased crystallite sizes and reduced total acidity. The reactions followed a zeroth order model and had no diffusion limitation. The main products were propanediols, ethylene glycol, long-chain molecules, as well as methane, ethane, and propane.
Article
Chemistry, Physical
S. Eijsbouts, L. C. A. van den Oetelaar, M. Rayner, H. Govaers, T. Boonen
Summary: The morphology, dispersion, and segregation of MoS2 in Co-Mo/Al2O3 catalysts vary depending on the metal content, with real-life catalysts being more complex and heterogeneous compared to model catalysts. The balance between active phase characteristics and sites differs between the two types of catalysts, resulting in different catalytic activities and selectivities.
JOURNAL OF CATALYSIS
(2021)
Article
Engineering, Environmental
Matej Zula, Miha Grilc, Blaz Lokovaz
Summary: The kinetics of palmitic acid hydro-deoxygenation over sulfided NiMo/gamma-Al2O3 were investigated. The study analyzed the mass transport/surface chemistry and explored the intermediates and their impact on reaction selectivity. The results showed the significance of H2 thermodynamic phenomena and coverage on different reaction pathways.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Hongfei Ma, Wei Zhang, De Chen
Summary: Catalytic converting lignin-derived bio-oil to liquid fuel is a promising method to reduce the reliance on petroleum-based fuel and decrease atmospheric carbon dioxide. This study prepared and evaluated a Ru-promoted MoFeP/Al2O3 catalyst for hydrodeoxygenation (HDO) of guaiacol and anisole model compounds at 250 degrees C. The catalyst showed good HDO performance, removing oxygen from phenolic compounds and producing hydrocarbons as the products. Kinetic studies were conducted to understand the HDO reactions and identify primary, secondary, and tertiary products. This fundamental study can help develop more efficient catalysts for the target products.
Article
Chemistry, Multidisciplinary
Jianghao Zhang, Junrui Li, Berlin Sudduth, Junming Sun, Changbin Zhang, Hong He, Yong Wang
Summary: A Cs-G@CoFe catalyst with a bimetallic alloy core and graphene overlayers doped with Cs was developed for highly selective hydrodeoxygenation (HDO) of phenolics under liquid-phase conditions. The bimetallic catalyst showed significantly enhanced activity (>threefold) compared with the monometallic Fe-based catalyst. The structure of the CoFe alloy core wrapped by several graphene overlayers in the Cs-G@CoFe catalyst contributes to the selective C-O bond cleavage.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Minghao Zhou, Yaqi Xue, Fei Ge, Jing Li, Haihong Xia, Junming Xu, Jun Zhao, Changzhou Chen, Jianchun Jiang
Summary: It was found that MOF-derived Ni-based bimetallic catalysts are effective for the in-situ hydrogenation/hydrodeoxygenation of lignin-derived monophenols and dimers using isopropanol as the hydrogen-donor solvent. The synergistic effects of bimetallic catalysts and their catalytic properties have a significant impact on the conversion rate of phenols and the yields of cyclohexanol/cycloalkanes.
Article
Energy & Fuels
Hao Xu, Xing Fan, Guo-Sheng Li, Yang-Yang Xu, Wen-Long Mo, Peter N. Kuznetsov, Feng-Yun Ma, Xian-Yong Wei
Summary: The physicochemical properties of Co-Mo/gamma-Al2O3 bimetallic catalyst were analyzed through a series of characterization methods, and its activity in hydroconversion of four coal-related model compounds was investigated. The possible reaction pathways of the model compounds were proposed based on GC/MS data.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Applied
E. N. Vlasova, A. A. Porsin, P. Aleksandrov, A. L. Nuzhdin, G. A. Bukhtiyarova
Summary: The co-processing of RSO-SRGO mixture over Mo/Al2O3-CoMo/Al2O3-SAPO-11 and Mo/Al2O3-NiMo/Al2O3-SAPO-11 catalytic systems resulted in decreased cloud point of products as temperature increased, with differences observed in the behavior under varying pressure. The hydrogenated products produced over NiMo/Al2O3-SAP showed lower final boiling point values and aromatic content compared to those produced over CoMo/Al2O3-SAP catalyst. Unexpectedly, pressure had varied effects on cloud point and conversion of long chain alkanes in the hydrodeoxygenation of RSO.
Article
Chemistry, Applied
Tove Kristensen, Christian Hulteberg, Sara Blomberg, Per Tuna, Omar Abdelaziz
Summary: A study was conducted to evaluate the effects of temperature, pressure, and weight hourly space velocity on the catalytic hydrodeoxygenation of vanillin to cresol over a Ni-Mo/delta-Al2O3 catalyst. The results showed that both temperature and pressure had significant effects on the selectivity for cresol, and the interaction of temperature with pressure and space velocity also played a significant role in the reaction. The optimal conditions for obtaining the highest selectivity for cresol were determined to be 314℃, 5 bar, and 35 h(-)(1).
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Camila A. Teles, Lucas R. Francisco, Vinicius O. O. Goncalves, Fabio B. Noronha, Frederic Richard
Summary: This study investigated the influence of reaction pressure on the hydrodeoxygenation (HDO) of m-cresol over Pd/SiO2 and Pd/Nb2O5 catalysts. The results showed that the catalytic properties of the solids were strongly dependent on the support material and reaction conditions. Increasing the pressure significantly increased the total reaction rate regardless of the catalyst used. The selectivity of Pd/Nb2O5 towards deoxygenated products varied depending on the pressure, with toluene favored under atmospheric pressure and 3-methylcyclohexane favored under 30 bar pressure.
Article
Chemistry, Physical
Oualid Alioui, Saber Gueddida, Yacine Benguerba, Sebastien Lebegue, Michael Badawi
Summary: The structural, electronic and magnetic properties of Nip@a-Al2O3(0001) systems with different cluster sizes were studied using density functional theory. The interactions between nickel clusters and the a-Al2O3(0001) surface were investigated through grafting energies, Bader charges and DOS analysis. The adsorption performances of these materials towards CH4, CO2, CO, H2 gases were evaluated, revealing promising prospects for the purification of methane and storage/utilization of CO2.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Lotfi Sellaoui, Mohamed Bouzidi, Dison S. P. Franco, Abdullah S. Alshammari, Mohamed Gandouzi, Jordana Georgin, Naim Bel Haj Mohamed, Alessandro Erto, Michael Badawi
Summary: This paper examines the adsorption of methylene blue (MB) and crystal violet (CV) dyes onto Bauhinia forficata residual fruit powder (BFRFP) as a potential adsorbent. The results show that BFRFP has a higher affinity for CV dye, and it can be a competitive material for removing MB and CV dyes from polluted water. A physical model is used to interpret the adsorption mechanisms, indicating the presence of physical interactions during the adsorption process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Younes Dehmani, Juliette Laine, Ayoub Daouli, Lotfi Sellaoui, Adrian Bonilla-Petriciolet, Taibi Lamhasni, Sadik Abouarnadasse, Michael Badawi
Summary: A novel modeling approach combining ab initio molecular dynamics, artificial neural networks, and statistical physics was used to analyze and explain the adsorption of phenol on zinc oxide. The study revealed that the adsorption process is multimolecular, endothermic, and involves hydrogen bonding and electrostatic forces.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Yanan Chen, Jawad Ali, Lotfi Sellaoui, Fatma Dhaouadi, Muhammad Naeem, Dison S. P. Franco, Jordana Georgin, Alessandro Erto, Michael Badawi
Summary: This paper experimentally and analytically analyzes the adsorption of the herbicide 2,4-D and the drug ketoprofen on wheat husks treated with H2SO4. The adsorbent is fully characterized using techniques such as FT-IR, SEM, and XRD. The study investigates the optimum conditions for adsorption, the impact of temperature, and the adsorption mechanism of the compounds. The results indicate that physical interactions play a significant role in the adsorption process on the tested adsorbent.
Article
Chemistry, Multidisciplinary
Javier Quilez-Bermejo, Sergio Garcia-Dali, Ayoub Daouli, Andrea Zitolo, Rafael L. S. Canevesi, Melanie Emo, Maria T. Izquierdo, Michael Badawi, Alain Celzard, Vanessa Fierro
Summary: In this study, single atoms and nanoclusters of Fe, Ni, Co, Cu, and Mn were embedded in a well-defined C1N1-type material with internal cavities of approximately 0.6 nm. The nucleation of different metal nanoclusters was achieved by forming metal-nitrogen bonds on four N atoms. After pyrolysis, TM@CNx-type structures were obtained, where TM represents the transition metal and x<1. Fe@CNx and Co@CNx showed promising performance in oxygen reduction reaction and hydrogen evolution reaction respectively, with a Pt-like performance, while Ni@CNx exhibited the highest activity in oxygen evolution reaction (OER) with an E-OER of 1.59 V versus RHE, surpassing the commercial IrO2 (E-OER = 1.72 V). This systematic and benchmarking study provides a basis for the future design of advanced multi-functional electrocatalysts by modulating and combining the metallic nature of nanoclusters and single atoms.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Applied
Mariya Mathew, C. D. Midhun Dominic, K. V. Neenu, P. M. Sabura Begum, P. Dileep, T. G. Ajith Kumar, Akshay Alax Sabu, Dhiraj Nagane, Jyotishkumar Parameswaranpillai, Michael Badawi
Summary: This research demonstrates the synergistic use of carbon black and chitin nanofibers in the development of green tyres. Chitin nanofibers were prepared from chitin powder using steam explosion and acid hydrolysis. The nanofibers were uniformly dispersed in natural rubber and mixed with carbon black to form composites. The composite with 1 phr chitin nanofiber loading showed significantly improved tensile and tear strengths compared to pure rubber, and also exhibited lower loss tangent at 60 degrees C. This study contributes to the development of sustainable and environmentally friendly tyre formulations.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Physical
Camila A. Teles, Saber Gueddida, Roger Deplazes, Carmen Ciotonea, Nadia Canilho, Sebastien Lebegue, Jeremy Dhainaut, Michael Badawi, Frederic Richard, Sebastien Royer
Summary: In this study, Co nanoparticles supported on SBA-15 exhibited high selectivity towards deoxygenated products in the hydrodeoxygenation of m-cresol. The addition of CO2 in the feed stream had a positive effect on the stability of the catalyst, while the presence of CO resulted in a significant decrease in m-cresol conversion.
Article
Engineering, Environmental
Won Young Jang, Ch. Venkata Reddy, Ayoub Daouli, Raghava Reddy Kakarla, Narendra Bandaru, Jaesool Shim, Michael Badawi, Tejraj M. Aminabhavi
Summary: This study synthesized a novel 2D S-doped V2O5 flakes via a hydrothermal procedure and applied them in photoelectrochemical water oxidation and electrochemical energy storage supercapacitors. The doped materials exhibited enhanced electrical properties and ion diffusion due to the sulfur-ion doping. The 2D S-doped V2O5 flakes showed excellent stability and energy storage capacity, indicating their potential for high-performance energy conversion and storage devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Maria G. Chernysheva, Andrey G. Popov, Mikhail G. Dzianisik, Alexander V. Egorov, Tolganay B. Egorova, Alexander V. Gopin, Artem A. Mitrofanov, Gennadii A. Badun
Summary: Hydrogen treatment is a popular method for surface modification of nanodiamonds. In this study, atomic hydrogen treatment of the functionalized surface was used to gently increase its hydrophobicity and maintain its overall composition. The corresponding mechanism was revealed through a combination of theoretical and experimental methods.
MENDELEEV COMMUNICATIONS
(2023)
Article
Chemistry, Organic
A. I. Nikiforov, E. A. Chesnokov, A. G. Popov, I. A. Nikiforov, I. I. Ivanova
Summary: Supported catalysts Mo/Al2O3 modified with (NH4)(2)SiF6 and H3BO3 were synthesized and tested for the metathesis of propylene. The support modifications had different effects on the catalyst acidity, with (NH4)(2)SiF6 not altering it while the interaction with boric acid increased the acidity. Dual modification with both (NH4)(2)SiF6 and H3BO3 enhanced the catalyst activity but led to faster deactivation.
PETROLEUM CHEMISTRY
(2023)
Review
Environmental Sciences
Hussein E. Al-Hazmi, Xi Lu, Dominika Grubba, Joanna Majtacz, Michael Badawi, Jacek Makinia
Summary: This review highlights the importance of understanding microbial metabolism in anammox-mediated systems and their potential applications in sustainable nitrogen removal from wastewater. Various processes, including PN-A, SNAD, PD-A, and DAMO-A, have shown efficient N removal in different wastewater treatment scenarios. The review also discusses the production of N2O in anammox-based processes and how it relates to certain bacteria. Additionally, mathematical models and promising NO3- reduction technologies are discussed. Overall, this review provides valuable insights into sustainable N removal in anammox-mediated systems, encouraging further research in this field.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Vladislav Gorbunov, Aleksey Buryak, Kirill Oskolok, Andrey G. Popov, Irina Tarkhanova
Summary: In this article, a series of effective catalysts based on betaine and sulfuric or phosphomolybdic acids were obtained. These compositions were characterized and tested in the oxidation of sulfur- and nitrogenous-containing compounds by H2O2. The acidity change is non-linearly influenced by the amount of heteropolyacid (HPA), and the removal of sulfur-containing compounds is correlated with the concentration of Bronsted acid sites on the catalyst surface. On the other hand, the removal of pyridine is primarily determined by the content of heteropolyacids in the catalyst.
Review
Environmental Sciences
Hussein E. Al-Hazmi, Ali Mohammadi, Aleksander Hejna, Joanna Majtacz, Amin Esmaeili, Sajjad Habibzadeh, Mohammad Reza Saeb, Michael Badawi, Eder C. Lima, Jacek Makinia
Summary: Considering water scarcity and increased water consumption, sustainable water recycling and wastewater reuse are urgent. A comprehensive literature review reveals that poor treatment of wastewater leads to increased pathogen and microbial threats, plant and soil contamination, as well as potential long-term health risks from emerging pollutants. Standardized analytical techniques should be developed to assess the effects of hazardous chemicals and heavy metals on human health.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Organic
V. A. Artamonova, A. G. Popov, I. I. Ivanova
Summary: MEL zeolite synthesized by steam-assisted crystallization method showed high phase purity, large micropore volume, and high concentrations of acid sites. Its acidic properties were characterized by IR spectroscopy using probe molecules. In terms of catalytic performance, this zeolite proved to be comparable to MFI-type zeolites.
PETROLEUM CHEMISTRY
(2023)
