Article
Energy & Fuels
Yan Huang, Jingzhen Wang, Shuanglong Ma, Rui Wang, Yazhou Wang
Summary: A novel adsorbent (PMo12@RH-MCM-41) was synthesized using waste rice husk and phosphomolybdic acid as the silica source and active center, respectively. The fibrous-like structure of RH-MCM-41 provided a high percentage of exposed PMo12 sites, enhancing the desulfurization activity. The PMo12@RH-MCM-41 showed excellent desulfurization ability and could be regenerated for multiple cycles.
Article
Engineering, Chemical
Lin Chen, Xia Jiang, Wenhua Chen, Zhongde Dai, Jianping Wu, Shenggui Ma, Wenju Jiang
Summary: N-doped mesoporous carbon is an efficient metal-free catalyst for hydrogen sulfide removal. This study presents a facile and green synthesis of N-doped interconnected mesoporous biochars. The method shows higher removal efficiency and more active sites compared to traditional synthesis methods. It can also be easily applied to other waste biomass.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Agricultural Engineering
Olga Maslova, Olga Senko, Nikolay Stepanov, Marina Gladchenko, Sergey Gaydamaka, Argam Akopyan, Ekaterina Eseva, Alexander Anisimov, Elena Efremenko
Summary: This study investigates the methanogenic biotransformation of complex mixtures of oil industry wastes and nitrogen-containing wastes, achieving high conversion of organic compounds to inorganic sulfide and production of biogas with high methane content. The efficiency of the process is improved by using immobilized artificial consortia and denitrifying oxidation of ammonium technology.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Cevdet Dogan, Stefan Martini, Stefan Retschitzegger, Banu Cetin
Summary: Compared to coal gasification syngas, there is limited research on affecting parameters in sulfur removal with ZnO adsorbents from biomass gasification syngas. This study investigates the effect of H2O presence on the sulfur removal capacity of ZnO adsorbents in syngas and finds that increasing the amount of adsorbent and temperature can enhance the removal capacity and reduce COS formation.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Energy & Fuels
Kento Torii, Mayu Hamazaki, Shoichi Kumon, Kimitaka Sato, Shogo Kato, Kiyoshi Dowaki
Summary: An energy production system combining biomass and fuel cells can generate a large amount of energy with minimal environmental impact. However, the presence of hydrogen sulfide (H2S) in gasified biomass reduces the efficiency of fuel cells, canceling out the advantages of this combination. This study investigates the use of neutralized sediment materials from mine drainage treatments as H2S adsorbents, which have a lower environmental impact compared to metal oxides. The experiment demonstrates that granulated neutralized sediment can significantly reduce the environmental impact of the hydrogen production system.
Article
Engineering, Environmental
Chi Xu, Jian Chen, Shiyan Li, Qingqing Gu, Dajun Wang, Chengfa Jiang, Yuefeng Liu
Summary: The 3D interconnected porous N-doped carbocatalyst derived from waste paper shows high catalytic efficiency in H2S removal, with NH3 post-treatment improving catalytic performance significantly, leading to outstanding reactivity and stability in high concentration H2S feed gas.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Alessandro Cavalli, Pradeep Chundru, Thomas Brunner, Ingwald Obernberger, Ilaria Mirabelli, Robert Makkus, Purushothaman Vellayani Aravind
Summary: This study focuses on high temperature biosyngas cleaning, exploring the catalytic activity of sorbents in the process. The results show that sorbents have significant impact on the water gas shift reaction and H2S removal, but are inactive towards the methanation reaction.
Article
Thermodynamics
G. Pongratz, V Subotic, H. Schroettner, C. Hochenauer, M. Skrzypkiewicz, Jakub Kupecki, A. Anca-Couce, R. Scharler
Summary: Using solid oxide fuel cells in biomass gasification based combined heat and power production can increase electrical efficiency of the system. Short-term poisoning with H2S can have a crucial impact on commercially available cell designs. The catalytically active anode volume has a strong influence on poisoning and regeneration behavior, highlighting the importance of considering the anode structure in addition to the sulfur tolerance of the anode material.
Article
Chemistry, Physical
Rooh Ullah, Mustafa Tuzen, Saif Ullah, Muhammad Haroon, Rozina Khattak, Tawfik A. Saleh
Summary: A series of novel mixed metal oxides (MOs) were prepared as supports for Ni/MOs using the double hydrolysis technique. The desulfurization study showed that the 10%NiZnO-Al2O3 adsorbent exhibited superior desulfurization performance with a breakthrough point of 10 ppm in model gasoline. The superior desulfurization performance was attributed to its higher Lewis and Lewis/Bronsted acid site ratio, higher surface area, larger pore size distribution, and lesser amount of inactive ZnAl2O4 spinel.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Physical
Vera Marcantonio, Luca Del Zotto, Jan Pieter Ouweltjes, Enrico Bocci
Summary: This paper discusses the method of integrating biomass gasification with solid oxide fuel cell technology to improve electrical efficiency, as well as the impact of harmful gases on the fuel cell anode, and offers effective technologies for removing contaminants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
William de Rezende Locatel, Dorothee Laurenti, Yves Schuurman, Nolven Guilhaume
Summary: Ex-situ catalytic fast pyrolysis was used to produce bio-oils from beech wood with Nb-based mixed oxides catalysts. The Lewis acid sites of NbxMnyOz were found to perform similarly to the Brønsted sites of H-ZSM-5, effectively improving the quality and selectivity of bio-oils while reducing oxygen content.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Inorganic & Nuclear
S. Benarib, N. Dacheux, X. F. Le Goff, J. Lautru, L. Di Mascio, N. Clavier
Summary: Uranium-cerium oxide solid solutions, U1-xCexO2+& delta;& BULL;nH(2)O, were prepared hydrothermally using mixed U(iv)-Ce(iii) oxalate precursors. The starting pH of the reaction media significantly influenced the oxide morphology. The hydrothermal treatment duration and cerium incorporation rates were also investigated. The complex redox behavior of uranium and cerium in hydrothermal processes and a conversion mechanism were proposed.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Eliana Nope, Angel G. Sathicq, Jose J. Martinez, Gustavo P. Romanelli, Rafael Luque
Summary: The transfer hydrogenation of furfural to furfuryl alcohol using mixed oxides derived from ternary hydrotalcites was studied. The structure of hydrotalcite-type materials collapsed during calcination, resulting in the formation of mixed oxides with larger surface areas and stronger basic sites. The yields to furfuryl alcohol were strongly affected by the type of Me2+ in the layered oxides and the hydrogen donor employed in the reaction. The mixed oxide containing Co2+ showed complete conversion of furfural and high yields to furfuryl alcohol (>95%) at short reaction times (<1 h).
Article
Chemistry, Multidisciplinary
Han Gil Seo, Anna Staerz, Dennis S. Kim, Dino Klotz, Clement Nicollet, Michael Xu, James M. LeBeau, Harry L. Tuller
Summary: Solid oxide fuel cells have the potential to improve energy conversion efficiency and reduce emissions, but suffer from performance degradation due to cathode poisoning. This study demonstrates that liquid Cr-infiltration causes electron depletion while subsequent Li-infiltration leads to electron accumulation, resulting in recovery and enhancement of the cathode material's performance.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Juan Carlos Martinez-Munuera, Marina Cortes-Reyes, Avelina Garcia-Garcia
Summary: This research investigates the behavior of different ceria-praseodymia mixed oxides and model catalysts in interaction with 18O2 under different temperatures, simulating conditions in gasoline direct injection (GDI) exhaust gases. The capacity of oxygen activation and uptake varies depending on the catalyst, temperature, praseodymium content, and preparation method. Some ceria-praseodymia formulations show high soot combustion activity, with the involvement of active oxygen species after the 18O2 pulse.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
B. Zaidi, B. Hadjoudja, C. Shekhar, B. Chouial, R. Li, M. V. Madhava Rao, S. Gagui, A. Chibani
Article
Automation & Control Systems
B. Zaidi, M. Khechba, C. Shekhar, I. Saouane, R. Li
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2017)
Article
Energy & Fuels
Rui Li, Matthew D. Krcha, Michael J. Janik, Amitava D. Roy, Kerry M. Dooley
Article
Engineering, Chemical
Rui Li, Amitava Roy, Joseph Bridges, Kerry M. Dooley
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2014)
Article
Environmental Sciences
Rui Li, Sheila Kalenge, Philip K. Hopke, Ryan Lebouf, Alan Rossner, Angela Benedict
ATMOSPHERIC POLLUTION RESEARCH
(2011)