Article
Engineering, Environmental
Xia Zhou, Fernando Plascencia-Hernandez, Feng Yu, Heriberto Pfeiffer
Summary: Li6ZnO4 showed excellent CO2 chemisorption efficiency even at low CO2 partial pressures. The kinetic analysis revealed fast and efficient CO2 carbonation, with a cyclic test demonstrating around 60.0% efficiency after 10 cycles.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
P. V. Subha, Balagopal N. Nair, V. Visakh, R. Achu, S. Shikhila, A. Peer Mohamed, T. Yamaguchi, U. S. Hareesh
Summary: The compositionally tuned lithium silicate nanowires have been shown to overcome kinetic limitations of CO2 sorption at lower temperatures, resulting in an absorption capacity of 300 mgg(-1) at 450 degrees C, a rare achievement for lithium silicate based materials at such low temperatures. This modification allows for enhanced CO2 capture and the possibility of using modified lithium silicate compositions as CO2 sorbents in industrially significant chemical reaction processes at temperatures ranging from 350-450 degrees C.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Xu Wang, Kang Guo, Yongyao Xia, Yulin Min, Qunjie Xu
Summary: A novel PEO-based composite electrolyte doped with MoO3-x nanosheets as fillers was prepared to enhance the lithium ion conductivity and improve the stability of the electrolyte. Compared to traditional PEO electrolytes, the new composite electrolyte exhibits higher ion conductivity and tensile strength, maintaining excellent performance during high-rate cycling.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Ranjith Balu, Gautham Devendrapandi, M. Sumithra Devi, Jothi Ramalingam Rajabathar, Hamad A. Al-lohedan, Dhaifallah M. Al-dhayan
Summary: The Dl-2-Aminobutanoate tartrate (D2ABT) single crystal was grown using the slow evaporation solution method at room temperature. The crystal structure, functional groups, optical quality, thermal behavior, and surface morphology of the grown crystal were studied. Density functional theory was applied to investigate its Hirshfeld surface properties. The grown crystal (D2ABT) exhibits outstanding physicochemical properties and holds significant value in optical and biological applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Review
Chemistry, Physical
Elif Tezel, Ariel Whitten, Genevieve Yarema, Reinhard Denecke, Jean-Sabin Mcewen, Eranda Nikolla
Summary: Selective electrochemical reduction of CO2 using renewable energy sources to create platform molecules for synthesis of fuels and chemicals has gained significant attention as a research area, with the potential to recycle and minimize the environmental impacts of CO2. Solid oxide electrolysis cells (SOECs) have emerged as promising devices for efficient and selective conversion of CO2 to CO or syngas. However, the instability of the current cathode electrocatalyst limits the performance of SOECs. Nonstoichiometric mixed ionic and electronic conducting oxides have shown promise as alternatives due to their redox stability and resistance to deactivation by carbon. This study summarizes the literature in this field and analyzes trends related to composition and oxygen defects, activity, selectivity, and stability for the electrochemical reduction of CO2 to CO in SOECs. Challenges in comparing the performance of SOEC cathode electrocatalysts for CO2 reduction are discussed, along with possible solutions and standardized protocols. The study concludes by providing an overview of challenges, potential solutions, and opportunities for electrochemical reduction of CO2 using nonstoichiometric mixed metal oxides in SOECs.
Article
Chemistry, Physical
Zhen Wang, Qian Xu, Kun Peng, Zirui Wang, Xingli Zou, Hongwei Cheng, Xionggang Lu
Summary: The addition of Na2CO3 significantly improves the CO2 capture performance of Li4SiO4 by reducing the activation energy for adsorption and diffusion, while also enhancing stability in cyclic processes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Thermodynamics
Luis I. Diez, Alexander Garcia-Mariaca, Paula Canalis, Eva Llera
Summary: The oxy-fuel combustion of two torrefied biomasses is experimentally investigated in this study. It is found that increasing the share of torrefied biomass leads to significantly higher burnout degrees and CO2 conversion rates. When torrefied biomass is used alone, the formation rates of NO are reduced. The best results are obtained with 25% H2O atmospheres in most cases.
Article
Chemistry, Physical
Hang Li, Weibo Hua, Bjoern Schwarz, Martin Etter, Stefan Mangold, Georgian Melinte, Nicola Pietro Maria Casati, Helmut Ehrenberg, Sylvio Indris
Summary: In this study, the structural and electronic changes of LiNiO2 at different temperatures were investigated through thermal treatments. Besides the decomposition process, a series of transformations were discovered under mild conditions, including the reaction with CO2 and the cation off-stoichiometry.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhensong Qiao, Yinggan Zhang, Zhaohui Meng, Qingshui Xie, Liang Lin, Hongfei Zheng, Baisheng Sa, Jie Lin, Laisen Wang, Dong-Liang Peng
Summary: The study introduced a porous carbon framework containing Fe-based compounds to improve the performance of lithium-sulfur batteries, showcasing strong chemisorption and catalytic ability. This framework effectively stabilizes the conversion of LiPSs, enhancing battery stability and rate performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Wenjing Yu, Qian Xu, Shenggang Li, Xiaolu Xiong, Hongwei Cheng, Xingli Zou, Xionggang Lu
Summary: The difference in CO2 adsorption performance between Li4SiO4 and Ca2SiO4 was revealed through density functional theory calculations. The results showed that the bent configuration of the adsorbed CO2 molecule parallel to the surface was the most thermodynamically favorable, and that Li4SiO4 had higher CO2 adsorption energy, stronger covalent bond, and more charge transfer compared to Ca2SiO4.
Article
Energy & Fuels
Vanessa Hernandez-Tapia, Elizabeth Vera, Rosa-Maria Ramirez-Zamora, Brenda Alcantar-Vazquez
Summary: This study synthesized two slag-derived Li4SiO4 using metallurgical slags as silica sources and investigated their application as CO2 sorbents. The CO2 desorption process was studied under fixed temperature, with varying CO2 partial pressure and desorption temperature. The kinetic parameters of CO2 desorption were analyzed using the Avrami-Erofeev and zero-order models. The results showed that the activation energy calculated with the Avrami model was significantly higher than the reported sorption values and that Li4SiO4 derived from electric arc furnace slag exhibited less temperature dependence compared to that derived from blast furnace slag. Furthermore, the desorption kinetics were found to decrease with lower partial pressures of CO2, and the cyclic study revealed the formation of secondary phases in the slag-derived silicates.
Article
Materials Science, Multidisciplinary
Michael Filep, Krisztina Molnar, Marjan Sabov, Zoltan Csoma, Artem Pogodin
Summary: The properties of cation substituted Tutton's salt single crystals were studied, and it was found that K2Ni0.4Co0.6(SO4)(2)·6H2O crystals have the highest dehydration temperature, band gap energy, and transmittance in the UVB region.
Article
Engineering, Chemical
Fernando Plascencia-Hernandez, Daniel G. Araiza, Heriberto Pfeiffer
Summary: A novel CO2 sorbent composed of sodium orthosilicate, sodium pyrosilicate, and sodium carbonate was successfully synthesized and evaluated for CO2 capture. The sorbent showed sensitivity to CO2 partial pressure and exhibited high capture efficiency in a wide temperature range. Additionally, it demonstrated good cycling stability with maintained capture efficiency.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Nefise Ozcelik, Tuncay Tunc, Raziye Catak Celik, Mahmut Erzengin, Haci Ozisik
Summary: A newly synthesized hydrazone derivative was characterized using various methods including XRD for crystal structure determination and antioxidant activity testing. The results showed potential radical scavenging ability of the synthesized compound.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Mauricio Lopez Luna, Janis Timoshenko, David Kordus, Clara Rettenmaier, See Wee Chee, Adam S. Hoffman, Simon R. Bare, Shamil Shaikhutdinov, Beatriz Roldan Cuenya
Summary: The study investigates the structural and chemical evolution of oxide-supported iron nanoparticles during the activation stages and the CO2 hydrogenation reaction, revealing the preferential formation of iron surface oxides under reaction conditions. The results highlight the important role played by the oxide support in the final structure and composition of nanosized catalysts.
Editorial Material
Chemistry, Multidisciplinary
Qiang Wang, Heriberto Pfeiffer, Rose Amal, Dermot O'Hare
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Ceramics
Angelica M. Castillo-Paz, Dorian F. Canon-Davila, Sandra M. Londono-Restrepo, Daniel Jimenez-Mendoza, Heriberto Pfeiffer, Rafael Ramirez-Bon, Mario E. Rodriguez-Garcia
Summary: This study aimed to fabricate and characterize bovine nanohydroxyapatite (nano-HAp) scaffolds at a low sintering temperature. The results showed that the macro-porosity and pore structure of the scaffolds can be controlled by manipulating the starch content, which is of great significance for the biocompatibility and application prospects of the scaffolds.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Fernando Plascencia-Hernandez, Daniel G. Araiza, Heriberto Pfeiffer
Summary: A novel CO2 sorbent composed of sodium orthosilicate, sodium pyrosilicate, and sodium carbonate was successfully synthesized and evaluated for CO2 capture. The sorbent showed sensitivity to CO2 partial pressure and exhibited high capture efficiency in a wide temperature range. Additionally, it demonstrated good cycling stability with maintained capture efficiency.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Lucy-Caterine Daza-Gomez, Victor-Fabian Ruiz-Ruiz, J. Arturo Mendoza-Nieto, Heriberto Pfeiffer, Geonel Rodriguez Gattorno, David Diaz
Summary: The catalytic activity of pristine Co3O4 and Co3O4-halloysite nanotubes composite towards dry methane reforming was analyzed. Results showed that both materials have bifunctional catalytic behavior and the Co3O4-halloysite nanotubes composite exhibited the highest H2 production under specific conditions.
APPLIED NANOSCIENCE
(2022)
Article
Energy & Fuels
Daniel G. Araiza, Fernando Plascencia-Hernandez, Heriberto Pfeiffer
Summary: This study presents a feasible methodology for improving the CO2 capture properties of sodium-ferrite-based materials by adding lithium nitrate. The experiment results show that the sample containing 5 mol% of lithium nitrate demonstrates the best CO2 capture performance, which is attributed to the formation of a LiNO3-Na2CO3 eutectic phase that enhances the carbonation of the material. The enhanced CO2 capture performance of 5Li-NaFeO2 is reflected by increased CO2 capture amount and reduced capture temperature range compared to the pristine beta-NaFeO2 material.
Article
Engineering, Chemical
Xinyuan Wang, Heriberto Pfeiffer, Jiangjiang Wei, Jinyu Wang, Jinli Zhang
Summary: Novel CaCO3-enhanced Mn-Fe mixed metal oxides (CMFC) were successfully synthesized and used as adsorbents for the removal of excess fluoride ions. The adsorbent exhibited a high adsorption capacity and the main mechanisms for fluoride ion adsorption were ion exchange, electrostatic attraction, and chemical adsorption.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Ion Iliuta, Alex Desgagnes, Ana Yanez Aulestia, Heriberto Pfeiffer, Maria C. Iliuta
Summary: This study proposes a non-isothermal sorption-enhanced bio-oil steam reforming (SEBOSR) process for the production of high-purity hydrogen. The process combines bio-oil steam reforming over a Ni/La2O3-alpha Al2O3 catalyst and in-situ CO2 adsorption over Li2CuO2. Model simulations show that the SEBOSR process can be optimized to achieve longer prebreakthrough stages and higher hydrogen purity. This intensified process allows for the production of highly pure and renewable hydrogen from CO2-neutral biomass.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Dorian F. Canon-Davila, Angelica M. Castillo-Paz, Sandra M. Londono-Restrepo, Heriberto Pfeiffer, Rafael Ramirez-Bon, Mario E. Rodriguez-Garcia
Summary: The coalescence phenomenon of nanocrystals generated by thermal treatments was investigated in hydroxyapatite samples derived from bovine bone. The temperature effect on the coalescence of HAp nanocrystals was examined by calcining the samples at temperatures ranging from 400 to 720 degrees C. Differential scanning calorimetry revealed four thermal transition events where HAp nanocrystals coalesce. Infrared analysis showed a decrease in the full width at half maximum of the phosphate band with increasing calcination temperature. X-ray diffraction peaks exhibited minima values at the coalescence events, while unit cell volumes showed an opposite trend.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Carlos Hernandez-Fontes, Fernando Plascencia Hernandez, Heriberto Pfeiffer
Summary: Hydrothermal and ball-milling procedures combined with the solid-state reaction method were proposed as alternative synthesis routes to modify microstructural Li2MnO3 powders. The modified Li2MnO3 samples exhibited improved CO chemisorption performance due to changes in their microstructural features. Among the samples, the one prepared by the hydrothermal method (HSS700) showed the best CO chemisorption performance, which was attributed to its crystal and particle sizes, morphology, and specific surface area.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Thermodynamics
Nan Wang, Fernando Plascencia-Hernandez, Daniel G. Araiza, Gabriela Diaz, Heriberto Pfeiffer
Summary: Li, Na and K nitrate-containing pentalithium ferrite (Li5FeO4) samples were evaluated for CO2 capture at moderate temperatures. The lithium nitrate-containing samples showed the highest CO2 capture properties. In-situ DRIFTS and DSC experiments revealed the reaction path and the role of alkali nitrate salts and H2O in the CO2 capture mechanism. Na and K nitrate-containing samples exhibited similar behaviors to the lithium case.
THERMOCHIMICA ACTA
(2023)
Article
Engineering, Chemical
Samantha A. Soto-Pacheco, Heriberto Pfeiffer, J. Arturo Mendoza-Nieto
Summary: The effect of different types of carbonates on the catalytic activity of Li2ZrO3 during CO oxidation was evaluated. Pure Li2ZrO3 and carbonate-modified samples showed similar catalytic activity, but not better than the pristine sample. CO oxidation was not favored without O2, and excess O2 improved the catalytic performance and CO2 formation. The addition of NiCO3 reduced the temperature for CO oxidation and enhanced the catalytic performance of the Ni-modified ceramic.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Nayeli Gomez-Garduno, Daniel G. G. Araiza, Christian A. A. Celaya, Jesus Muniz, Heriberto Pfeiffer
Summary: In this study, M-doped beta-NaFeO2 samples (where M = Cu or Ni) were synthesized to improve the CO2 capture properties of sodium ferrite. Both experimental and theoretical approaches were used to investigate the structural, electronic, and optical modifications caused by doping. Experimental techniques including XRD, XPS, SEM, and spectroscopies were used for characterization, while DFT and AIMD simulations were employed for theoretical calculations. The results demonstrated effective doping with a small amount of metal and showed that nickel-containing samples exhibited higher efficiency in CO2 sorption.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Chemical
Daniela Gonzalez-Varela, J. Francisco Gomez-Garcia, Ruben Mendoza-Cruz, Heriberto Pfeiffer
Summary: The study investigates the use of (Gd-La) co-doped CeO2-NiO-carbonate membrane reactor for CO oxidation and CH4 dry reforming, demonstrating better CO2 permeation performance compared to a mechanical mixture of materials. The addition of oxygen in the feed and membrane sides improves CO2 permeation yields, while in the CH4 reforming reaction, the CO2 permeation remains the limiting step despite catalyst (LaNiO3) addition.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Kaptan Rajput, Carlos Hernandez-Fontes, Nishesh Kumar Gupta, Bijal R. Mehta, Srungarpu N. Achary, Herlys Viltres, Heriberto Pfeiffer, Debesh R. Roy, Kwang Soo Kim
Summary: This study investigates the surface reactivity of Li2MnO3 towards H2S, SO2, and NO gases at room temperature using experimental and theoretical methods. The results demonstrate that Li2MnO3 effectively removes these toxic gases through chemisorption across various temperature ranges.
NEW JOURNAL OF CHEMISTRY
(2023)
Review
Green & Sustainable Science & Technology
Daniela Gonzalez-Varela, Carlos Hernandez-Fontes, Nan Wang, Heriberto Pfeiffer
Summary: This article primarily introduces the CO2 capture processes in ceramic materials at high temperatures and the catalytic conversion of CO2 to value-added products. It provides a comprehensive description of alkali and alkaline-earth ceramics used for CO2 chemical sorption and catalytic reactions, as well as discusses the potential prospects of these ceramics within the same framework.
CARBON CAPTURE SCIENCE & TECHNOLOGY
(2023)
