Catalytic Constructive Deoxygenation of Lignin-Derived phenols: New C–C Bond Formation Processes from Imidazole-Sulfonates and Ether Cleavage Reactions

doi:10.1201/b18526-14

Cited by 2 publications

(3 citation statements)

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“…bonding with surface OH groups, coordinately unsaturated cations, oxygen anions, etc. Additionally, there is a good and proved opportunity for chemisorptions due to a stronger interaction between the surface and the molecules followed by formation of chemical bonds [12,13]. Of course, ion-exchange reactions (involving exchangeable cations or OH groups) are important and will readily contribute to the adsorption process, as well as catalytic ability in specific processes and conditions [14].…”

Section: Clays Clay Minerals and Ceramic Materials Based On Clay Minmentioning

confidence: 99%

“…Therefore, the main ion-exchange reactions that took place were (i) ion-exchange of NH 4 + for exchangeable cations including Ca 2+ и Mg 2+ according to Eqs. (13) and (15), (ii) ion-exchange of NH 4 + for exchangeable protons, and (iii) exchange between NH 4 + and hydronium ions as well as protons of Si-OH groups located close to three-coordinated aluminum atoms, formed after acid treatment according to Scheme 5.…”

Section: Contribution Of Ion-exchange Reactions To the Adsorption Of mentioning

confidence: 99%

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Adsorption of Industrial Pollutants by Natural and Modified Aluminosilicates

Novikova¹,

Belchinskaya²

2016

Clays, Clay Minerals and Ceramic Materials Based on Clay Minerals

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The adsorption ability of natural clay minerals and zeolites is a structurally caused distinguished feature, which determines their physical-chemical properties and almost each area of application. The type of surface active sites responsible for adsorption behavior differs for various structural types of aluminosilicates and varies under modifying agents. The present chapter illustrates the effect of the acid and base modification of natural aluminosilicates on their adsorption behavior in respect to a number of pollutants present in aqueous media. For this, the change of adsorption-structural characteristics of natural clay samples containing representatives of the main groups of clay minerals under activation is considered. Further, the chapter focuses on characterization of surface active sites by means of a new method of a catalytic conversion of 2-methylbut-3-yn-2-ol. The presence of both acid and basic sites on the aluminosilicates surface as well as variations of surface acidity and basicity for different structural types of aluminosilicates under varying conditions of modification is discussed. The third highlight of the chapter encompasses adsorption processes taking place in aqueous solutions of formaldehyde, acetic acid, and ammonium chloride on the surface of natural and activated aluminosilicates. The activating effect of a number of inorganic acids and bases on adsorption equilibrium is compared. The considered mechanism of the adsorption of electrolytes and polar molecules from aqueous media may comprise hydrogen bonding, chemisorptions, or ion-exchange reactions.

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Section: Clays Clay Minerals and Ceramic Materials Based On Clay Minmentioning

confidence: 99%

Section: Contribution Of Ion-exchange Reactions To the Adsorption Of mentioning

confidence: 99%

Adsorption of Industrial Pollutants by Natural and Modified Aluminosilicates

Novikova¹,

Belchinskaya²

2016

Clays, Clay Minerals and Ceramic Materials Based on Clay Minerals

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“…Dispersion method of synthesis with nitric acid based synthesis of solid adsorbent gave higher CO 2 capture due to higher alkalinity at the standard optimal operating conditions. It is reported that addition of alkaline metals and flyash enhances the carbonation and also alkaline silicates decomposition also contributes for enhancement along with synthesis methods for accelerated carbonation [12]- [15].…”

Section: Effect Of Synthesis Methodsmentioning

confidence: 99%

Effect of Composition, Synthesis Protocol and Pellet Size of Cost Effective Adsorbents Doped with Flyash on Carbon Capture

Sreenivasulu¹,

Vyas²,

Kamani³

et al. 2016

IJESD

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Abstract-CO 2 influe gas from anthropogenic emission is one of the major contributors for global warming among greenhouse gases (GHG). Alkaline metal oxide (CaO, MgO, etc) adsorbents got industrial importance due to its use at high temperature CO 2 capture in coal gasification to separate hydrogen gas. In this paper, we discussed on the synthesis methods of mechanical mixing, freeze granulation and dispersion methods of adsorbents for CO 2 capture. Operational issues of packed bed reactor used for CC using the alkaline earth metals doped flyash. Pore size and surface areas dependence of monolithic pellets on carbonation -calcination temperatures. CC variation with monolithic pellet size and carbonation temperatures. Breakthrough curves of adsorption for the adsorbents were discussed. Adsorbents of limestone doped with flyash were analyzed using various analytical tools and the findings were reported.Index Terms-Alkaline metal oxides doped with flyash, carbon capture, operational experiences in packed bed reactor, synthesis protocol of monolithic adsorbents.

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Catalytic Constructive Deoxygenation of Lignin-Derived phenols: New C–C Bond Formation Processes from Imidazole-Sulfonates and Ether Cleavage Reactions

Cited by 2 publications

References 94 publications

Adsorption of Industrial Pollutants by Natural and Modified Aluminosilicates

Adsorption of Industrial Pollutants by Natural and Modified Aluminosilicates

Effect of Composition, Synthesis Protocol and Pellet Size of Cost Effective Adsorbents Doped with Flyash on Carbon Capture

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