Relevant bibliographies by topics / Isotherms and Chemisorption

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Academic literature on the topic 'Isotherms and Chemisorption'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Isotherms and Chemisorption"

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Masthan, S. Khaja, K. S. Rama Rao та P. Kanta Rao. "The Influence of Metal Loading on the Structure-sensitive Chemisorption of Nitrogen on Ru/γ-Al2O3 Catalysts". Adsorption Science & Technology 11, № 3 (1994): 175–85. http://dx.doi.org/10.1177/026361749401100305.

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Nitrogen chemisorption has been studied on five Ru/γ-Al2O3 catalysts ranging in Ru loading from 0.5–5.0 wt.% at different temperatures from 25°C to 300°C and at different pressures up to 1 atm in order to obtain an insight into the influence of the morphological structure of ruthenium on the amount and nature of nitrogen chemisorption. The chemisorption of N2 at ambient temperature increased steadily with pressure on all the catalysts studied so that the resulting isotherms were straight lines. When the adsorption temperature was raised, N2 chemisorption decreased and the corresponding isother
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Taranko, E., R. Cardenas, R. Taranko, and V. K. Fedyanin. "Chemisorption Isotherms for Ising Anderson Hamiltonian." Acta Physica Polonica A 86, no. 6 (1994): 917–27. http://dx.doi.org/10.12693/aphyspola.86.917.

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Caputo, Maricel, Francisca Aparicio, Sergio Laurella, and María de las Mercedes Schiavoni. "Argentinian Sugar Cane Vinasse: Characterization of Phenolic Compounds and Evaluation of Adsorption as a Possible Remediation Technique." Chemistry & Chemical Technology 16, no. 3 (2022): 484–91. http://dx.doi.org/10.23939/chcht16.03.484.

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Chemical composition of sugar cane vinasse (Tucumán, Argentina) was studied finding high concentration of organic compounds. Phenolic compounds were partially characterized, finding mostly flavonoids, anthocyanins, as well as resorcinol and ferulic acid derivatives. Adsorption isotherms of phenolic compounds and total organic compounds were measured on four commercial activated carbons with different physical and chemical properties at two temperatures. The isotherm shape depends on the type of carbon and the adsorption capacity is enhanced as temperature increases. Enthalpies of the adsorptio
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Starke, Annika, Christoph Pasel, Christian Bläker, Tobias Eckardt, Jens Zimmermann, and Dieter Bathen. "Impact of Na+ and Ca2+ Cations on the Adsorption of H2S on Binder-Free LTA Zeolites." Adsorption Science & Technology 2021 (May 29, 2021): 1–12. http://dx.doi.org/10.1155/2021/5531974.

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Hydrogen sulfide is removed from natural gas via adsorption on zeolites. The process operates very effectively, but there is still potential for improvement. Therefore, in this article, the adsorption of hydrogen sulfide was investigated on eight LTA zeolites with different cation compositions. Starting with the zeolite NaA (4 A), which contains only Na+ cations, the Ca2+ cation content was gradually increased by ion exchange. Equilibrium isotherms from cumulative breakthrough curve experiments in a fixed-bed adsorber at 25°C and 85°C at 1.3 bar (abs.) were determined in the trace range up to
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Chen, Jun Tao, Yue Xin Han, Shu Fang Ding, and Shui Lin Zheng. "The Adsorption Performance Study of Acid Leaching Residue of Asbestos Tailings." Materials Science Forum 685 (June 2011): 246–52. http://dx.doi.org/10.4028/www.scientific.net/msf.685.246.

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Acid leaching residue of asbestos tailings was calcined at 600°C. N2adsorption and desorption isotherms of this modified mineral material were measured at low temperature and the adsorption characteristic of acid leaching residue as well as the mechanism were discussed. The specific surface area of acid leaching residue was calculated by BET model, and meanwhile micropore and mesopore structural parameters were calculated by means of ‘t-Plot’ and BJH theory, respectively. The results showed that the N2adsorption-desorption isotherms of acid leaching residue were in line withⅠpattern of the IUP
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Porubská, Mária, Karin Koóšová, and Jana Braniša. "Competitive Cation Adsorption on Electron-Irradiated Sheep Wool Changes the Fitting of Adsorption Isotherms for Single-Component Solutions." Processes 11, no. 2 (2023): 502. http://dx.doi.org/10.3390/pr11020502.

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This work analyses 10 adsorption isotherm models applied to adsorption of Cr(III) and Cu(II) from binary solutions on electron-irradiated sheep wool (0-24-100) kGy. The results are compared with fitting the same adsorbates from corresponding single solutions. The competing cation significantly changes the fitting of the selected isotherms to the extent that even simultaneous fitting of the same cation in the single and binary solution is rare. In the case of Cr(III), 4 favourable matches were found out of 30 compared cases, while in the case of Cu(II), only 2 conformities were found. Having th
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Taranko, E. "Chemisorption isotherms in a generalized lattice gas model." physica status solidi (b) 195, no. 2 (1996): K5—K8. http://dx.doi.org/10.1002/pssb.2221950233.

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Ugbe, Fabian Audu, Patrick Onuh Anebi, and Victoria Abiola Ikudayisi. "Biosorption of an Anionic Dye, Eosin Yellow onto Pineapple Peels: Isotherm and Thermodynamic Study." International Annals of Science 4, no. 1 (2018): 14–19. http://dx.doi.org/10.21467/ias.4.1.14-19.

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Eosin Yellow (EY), an anionic dye (acid dye) was adsorbed using an agricultural waste, pineapple peels (PP) as bio-sorbent in order to investigate its suitability as an alternative adsorbent, and to give insight into the mechanisms of binding. The study includes: equilibrium isotherms and thermodynamics studies. The adsorption isotherm and thermodynamics experiments were conducted using batch equilibrium techniques. The adsorption data were fitted into Langmuir, Freundlich and Temkin isotherm models; as a result, the data fitted well into the Langmuir model from which the adsorption capacity,
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Woods, R., Z. Chen, and R. H. Yoon. "Isotherms for the chemisorption of ethyl xanthate on lead." International Journal of Mineral Processing 50, no. 1-2 (1997): 47–52. http://dx.doi.org/10.1016/s0301-7516(96)00030-0.

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Güleç, Fatih, Orla Williams, Abby Samson, Emily T. Kostas, Lee A. Stevens, and Edward Lester. "Exploring the Utilisation of Natural Biosorbents for Effective Methylene Blue Removal." Applied Sciences 14, no. 1 (2023): 81. http://dx.doi.org/10.3390/app14010081.

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This paper presents a comprehensive analysis of the adsorbent capacity of five distinctly different biosorbents derived from untreated biomasses. The optimal adsorption capacity of seaweed (Laminaria digitata), horse chestnut husk, hazelnut husk, rapeseed residue, and whitewood to remove methylene blue (MB) dye was assessed by analysing the effects of particle size, pH, temperature, and initial dye concentrations. Furthermore, the adsorption kinetics, isotherms, and adsorption thermodynamics were investigated. The results showed that relatively high MB adsorption capacity was achieved by Lamin
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Dissertations / Theses on the topic "Isotherms and Chemisorption"

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Bakyayita, Kizito Grace. "Equilibrium and Kinetic Batch Studies of Cadmium and Lead sorption using Low Cost Biosorbents." Licentiate thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145004.

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Agricultural wastes; Albizia coriaria, Coffea canephora, Cyperus papyrus, Erythrina abyssinica and Musa spp were evaluated for uptake of aqueous Cd2+ and Pb2+ ions in single- and binary-component solutions. Untreated, base-treated and peroxide-treated biomasses were employed in batch studies. The optimal conditions for Cd2+ and Pb2+ ions biosorption were  pH 3.5 – 5 for contact time 3.0 – 3.5 hours and biosorbent dosage 10 – 12.5 g/L. Base-treated biosorbents showed a 10 – 17 %  sorption enhancement for Cd2+ ions and a 1.6 – 2.3 % uptake reduction for Pb2+ ions. The sorption capacities for Cd2
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Books on the topic "Isotherms and Chemisorption"

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Shields, Joan E., Martin A. Thomas, Matthias Thommes, and S. Lowell. Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density (Particle Technology Series). Springer, 2006.

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Shields, Joan E., Martin A. Thomas, Matthias Thommes, and S. Lowell. Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density. Springer, 2010.

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Shields, Joan E., Martin A. Thomas, Matthias Thommes, and S. Lowell. Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density. Springer London, Limited, 2012.

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Book chapters on the topic "Isotherms and Chemisorption"

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Hadoudi, Nouhaila, M’hamed Ahari, Najlae Zaki, et al. "Removal Efficiency of Phenolic Compounds (Bisphenol A and Pentachlorophenol) by Adsorption Using a Bentonite-CTAB." In Recent Advances in Montmorillonite [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1004783.

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Bentonite clay modified with cetyltrimethylammonium bromide (CTAB) has been investigated as an effective adsorbent for the removal of bisphenol A (BPA) and pentachlorophenol (PCP) from aqueous solutions. The adsorption performance of Bentonite-CTAB was evaluated by conducting batch adsorption experiments under different conditions. The adsorption isotherms of BPA and PCP on Bentonite-CTAB (BT-CTAB) were analyzed using the Langmuir and Freundlich models. The Langmuir model provided a better fit to the experimental data, suggesting the presence of monolayer adsorption. The adsorption kinetics of
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Atkins, Peter, Julio de Paula, and James Keeler. "Heterogeneous catalysis." In Atkins’ Physical Chemistry. Oxford University Press, 2022. http://dx.doi.org/10.1093/hesc/9780198847816.003.0109.

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This chapter explains how the chemical industry relies on the use of efficient catalysts to facilitate a wide variety of transformations, noting that the majority of these catalysts involve reactions at surfaces. It describes how certain concepts relating to adsorption and desorption can be extended to provide a way to model surface reactions. It also points out that the chemical industry relies on heterogeneous catalysis for many of its most important large-scale processes. The chapter highlights heterogeneous catalysis, which commonly involves chemisorption of one or more reactants and a con
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Atkins, Peter, Julio de Paula, and David Smith. "Heterogeneous catalysis." In Elements of Physical Chemistry. Oxford University Press, 2016. http://dx.doi.org/10.1093/hesc/9780198727873.003.0043.

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This chapter studies heterogeneous catalysis, in which the catalyst and the reagents are in different phases. A common example is a solid that increases the rate of a gas-phase reaction. The solid provides a surface to which the reactants bind and so facilitates encounters between reactants. In general, heterogeneous catalysts are highly selective and to find an appropriate catalyst each reaction must be investigated individually. Two techniques have revolutionized the study of surfaces in recent years: scanning tunnelling microscopy (STM) and atomic force microscopy (AFM). Ultimately, the key
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McCash, Elaine M. "Adsorption and desorption." In Surface Chemistry. Oxford University Press, 2001. http://dx.doi.org/10.1093/hesc/9780198503286.003.0003.

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This chapter examines adsorption and desorption. There are several possible outcomes when an atom or a molecule hits a surface, including elastic and inelastic scattering. However, the outcome of an atomic or a molecular collision that results in the retention of the molecule on the surface is of far greater importance to the study of surface chemistry. There are two types of interactions that can occur: physical adsorption (or physisorption) and chemisorption. In each case, the atom or molecule being adsorbed on the surface is usually described as the adsorbate; the adsorbing surface is usual
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Ahmed Alsharif, Marwah. "Understanding Adsorption: Theories, Techniques, and Applications." In Adsorption - Fundamental Mechanisms and Applications [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1008865.

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The chapter topic “Understanding Adsorption: Theories, Techniques, and Applications” will provide a comprehensive exploration of the fundamental theories, experimental techniques, and practical applications of adsorption processes. It will begin by discussing the foundational theories that explain adsorption behaviour, including physisorption and chemisorption, and their underlying molecular interactions. Key adsorption models, such as Langmuir, Freundlich and BET isotherms, will be reviewed to offer insights into adsorption dynamics, capacity and surface interactions. The chapter will also co
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Agougui, Hassen, Youssef Guesmi, and Mahjoub Jabli. "Preparation and Characterization of Biopolymer/Calcium Phosphate Composite and Their Application for Dye-Contaminated Wastewater Treatment." In Environmental Sciences. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.113940.

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The current chapter book describes of the chemical modification of calcium phosphate surface by lambda carrageenan biopolymer and its using for the removal of methylene blue (MB) from aqueous solution. The prepared adsorbents (CaP-Carr) adsorbents were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) analysis. The X-ray powder analysis results showed that the crystallinity was unaffected by the presence of biopolymer. In order to investigate the impact of various parameters, including temperature, pH level, contact time, and initial
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Cristina Páez-Pumar Romer, Isabel, Isabella Victoria Plazola Santana, Rosa María Rodríguez Bengoechea, and Miguel Manuel Pérez Hernández. "Coconut Shell Charcoal Adsorption to Remove Methyl Orange in Aqueous Solutions." In Sorption [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102898.

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Activated charcoal was prepared and characterized from residues of coconut peel (CACC) to remove by adsorption the Methyl Orange (AM) dye in aqueous solution. The charcoal was activated with phosphoric acid. The morphology and structure of the pores of the carbon obtained were analyzed by Scanning Electron Microscopy (SEM) and a surface analyzer. The adsorption data were evaluated by the BET, Langmuir and Freundlich isotherms, finding the Langmuir type I model. The surface area of the activated carbon was 526 m2/g with a pore volume of 0.234 cm3/g and an average pore diameter of 1.78 nm, accor
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Attard, Gary, and Colin Barnes. "Gas adsorption at solid surfaces." In Surfaces. Oxford University Press, 1998. http://dx.doi.org/10.1093/hesc/9780198556862.003.0001.

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This chapter discusses gas adsorption by solid surfaces. It describes some key ideas relating to the interaction of gases with solids, starting with the Langmuir adsorption isotherm. The Langmuir isotherm has been used successfully to interpret equilibrium adsorption behaviour of a number of systems and in determining the total surface area of solid surfaces, particularly high surface area solids often used as heterogeneous catalysts. Meanwhile, the Brunauer, Emmett and Teller (BET) isotherm provides an extension of the Langmuir monolayer model to multilayer adsorption. The chapter then looks
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Marinho, Jefferson Luiz Alves, Victor Feitosa Teixeira, and Raimundo Nonato Pereira Teixeira. "Chemisorption of toxic effluents from electroplating in residual gypsum from civil construction." In Exploring the Field of Agricultural and Biological Sciences. Seven Editora, 2024. http://dx.doi.org/10.56238/sevened2023.001-015.

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Some industrial sectors have an index of pollutants that are more degradable to the environment, for example, the electroplating industries. The treatment of its effluents is essential before it is released into water bodies. The purpose of this work is to test construction waste as possible adsorbents of toxic metal ions. Plaster was used as study material. Specimens were made with plaster moistened with contaminated solutions of Cu2+ and Pb2+. ions. The specimens were submitted to flexural strength tests and the results showed a small decrease in the strength of this type of material when co
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Garikoé, Issaka, and Boubié Guel. "Solid-State Synthesis of Organoclays: Physicochemical Properties and Application for Bisphenol A Removal from Aqueous Solutions." In Nanoclay - Recent Advances, New Perspectives and Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.107503.

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The solid-state intercalation of organoclays, by using surfactants bromide salts (n-C12H25(CH3)3NBr, n-C14H29(CH3)3NBr, n-C16H33(CH3)3NBr and n-C12H25)2(CH3)2NBr) at different levels of the cation exchange capacity (CEC), was reported. According to XRPD data, the basal spacing of the smectite phase unit cell increased systematically up to >38 Å at 2.0-CEC of surfactants loading, indicating that they entered into the smectite interlayers and were arranged parallel to the layers at low concentrations and nearly vertical at high ones. Organoclays FTIR spectra showed a drop in the water band in
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Conference papers on the topic "Isotherms and Chemisorption"

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Bavarian, Bezad, and Lisa Reiner. "Current Progress in Corrosion Inhibition of Reinforcing Steel in Concrete Using Migrating Corrosion Inhibitors." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06347.

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Abstract Several migrating corrosion inhibitors for reinforced concrete were investigated using ASTM G109 and Modified G109. XPS depth profiling showed a 90-100 nm amine-rich layer and chloride ions on the steel rebar surfaces indicating that the modified corrosion inhibitor molecules had suppressed chloride ion interaction and protected the steel rebar passivation layer. There is no indication of corrosion after 400 days of testing. The inhibitor treated samples showed improved resistance polarization (Rp was in the 50 kohm to 60 kohm range, corrosion potentials ranged between -64 mV and -103
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Aljeaban, Norah, Nurudeen A. Odewunmi, Bader Alharbi, Mohammad A. Jafar Mazumde, Salem Balharth, and Shaikh A. Ali. "Investigation of Electrochemical Corrosion Inhibition of N, N′-(1, 4-Phenylenebis(methyl)) Bis(N,N-Dimethylalkan-1-Aminium) Chloride on API 5L X60 Steel in Acidic Media." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14723.

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Abstract The application of corrosion inhibitors (CI) to producing oil and gas field systems is one of the most common practices of corrosion control. Acid stimulation fluids such as hydrochloric acid (HCl) and organic acids has high calcite and dolomite dissolving power; however, pumping HCl downhole during acid stimulation process particularly at elevated temperatures can cause severe corrosion. Therefore, the addition of corrosion inhibitors is indispensable to protect the metal from corrosion. More inhibitors that are efficacious are still needed to provide better protection against the co
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Okeniyi, Joshua Olusegun, Abimbola Patricia Idowu Popoola, and Cleophas Akintoye Loto. "Corrosion Test-data Modeling for C10H18N2Na2O10 Performance on Steel-rebar in NaCl-immersed Concrete." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05590.

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Abstract This paper studies the empirical and correlation modeling of corrosion test-data for detailing C10H18N2Na2O10 (ethylenediaminetetraacetic disodium salt) performance on steel-rebar corrosion in 3.5% NaCl-immersed concrete. The corrosion test-data were measured using three non-destructive electrochemical-monitoring-techniques from duplicated samples of the NaCl-immersed steel-reinforced concrete slabs admixed with different C10H18N2Na2O10 concentrations. Empirical data from these were subjected to statistical-distribution fitting analyses as per ASTM(1) G16-95 R04. Results revealed that
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Aljunid Merican, Zulkifli Merican. "Dynamic simulation investigation of e-methanol production from hydrogen and Co2 capture using Zif-67 and ZIF-8 catalysts." In Decarbonization Technology: ICDT2024. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903575-26.

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Abstract. Malaysia and global stakeholders are committed to addressing climate change and the prevailing fuel crisis driven by non-renewable fossils. One promising solution is the photocatalytic reduction of methanol production (e-methanol). However, there are challenges with the utilization of ZIF-67 catalyst, and existing literature lacks sufficient data on its interaction with CO2 and H2 during adsorption and e-methanol production. To address this gap, we conducted DFT simulations using BIOVIA Materials Studio software to study ZIF-67 and compare it with the extensively studied ZIF-8. The S
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Reports on the topic "Isotherms and Chemisorption"

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Hajduk, J. On the topic of single and multicomponent chemisorption isotherms. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5387731.

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