Kinetic study of the decomposition of 2‐butanol on carbon‐based acid catalyst

Bedia, Jorge; Ruiz-Rosas, Ramiro; Rodríguez‐Mirasol, J.; Cordero, Tomás

doi:10.1002/aic.12056

Cited by 59 publications

(46 citation statements)

References 53 publications

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“…Activated carbons are amorphous carbon materials, mainly characterized by a well-developed porous texture [1]. They are widely used in many different applications including (1) adsorption, both in gas and liquid phases [2][3][4], (2) catalysis, mostly as supports of the active phases [5][6][7][8][9] but also as bulk catalysts [10][11][12][13], and (3) in electrochemical or energy storage applications for use as supercapacitors [14][15][16][17][18]. There is currently a reborn interest in research of the synthesis, characterization, and applications of activated carbons, as shown by recent reviews and the high number of publications on this topic that can be found in the technical literature [19][20][21][22][23][24].…”

Section: Activated Carbonsmentioning

confidence: 99%

Review on Activated Carbons by Chemical Activation with FeCl3

et al. 2020

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This study reviews the most relevant results on the synthesis, characterization, and applications of activated carbons obtained by novel chemical activation with FeCl3. The text includes a description of the activation mechanism, which compromises three different stages: (1) intense de-polymerization of the carbon precursor (up to 300 °C), (2) devolatilization and formation of the inner porosity (between 300 and 700 °C), and (3) dehydrogenation of the fixed carbon structure (>700 °C). Among the different synthesis conditions, the activation temperature, and, to a lesser extent, the impregnation ratio (i.e., mass ratio of FeCl3 to carbon precursor), are the most relevant parameters controlling the final properties of the resulting activated carbons. The characteristics of the carbons in terms of porosity, surface chemistry, and magnetic properties are analyzed in detail. These carbons showed a well-developed porous texture mainly in the micropore size range, an acidic surface with an abundance of oxygen surface groups, and a superparamagnetic character due to the presence of well-distributed iron species. These properties convert these carbons into promising candidates for different applications. They are widely analyzed as adsorbents in aqueous phase applications due to their porosity, surface acidity, and ease of separation. The presence of stable and well-distributed iron species on the carbons’ surface makes them promising catalysts for different applications. Finally, the presence of iron compounds has been shown to improve the graphitization degree and conductivity of the carbons; these are consequently being analyzed in energy storage applications.

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Section: Activated Carbonsmentioning

confidence: 99%

Review on Activated Carbons by Chemical Activation with FeCl3

et al. 2020

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“…Recently, Beltrame et al [211] analyzed the preparation of activated carbon fibers by H 3 PO 4 -activation of pineapple plant leaves for the adsorption of caffeine. The activated fiber showed a surface area of 1031 m 2 •g −1 with a high amount of acid surface groups from the H 3 PO 4 activation process [223,224]. The highest caffeine adsorption capacities were obtained at pH values up to 7, decreasing significantly at pH values of 8 and 9.…”

Section: Contaminantmentioning

confidence: 98%

A Review on the Synthesis and Characterization of Biomass-Derived Carbons for Adsorption of Emerging Contaminants from Water

et al. 2018

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This review analyzes the preparation and characterization of biomass-derived carbons and their application as adsorbents of emerging contaminants from water. The study begins by identifying the different types of emerging contaminants more often found in water streams, including a brief reference to the available technologies for their removal. It also describes the biomass sources that could be used for the synthesis of biochars and activated carbons (AC). The characterization of the adsorbents and the different approaches that can be followed to learn about the adsorption processes are also detailed. Finally, the work reviews literature studies focused on the adsorption of emerging contaminants on biochars and activated carbons synthesized from biomass precursors.

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“…The XPS P2p peak was located at binding energy (BE) around 133 eV and could be fitted to assign the contribution of two peaks one at 132.8 eV and another at 133.6 eV. These contributions to the P2p zone can be described as P groups directly bonded to a carbon site (CPO3 or C2PO2 group), or with a bridge O atom (COPO3 or (CO)3PO groups) [33,34].…”

Section: Synthesis and Characterization Of The Catalystmentioning

confidence: 99%

Porous carbons-derived from vegetal biomass in the synthesis of quinoxalines. Mechanistic insights

et al. 2020

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We report herein for the first-time acid biomass-derived carbons from vegetal biomass, with high developed porosity, prepared through the integrating method comprising pyrolysis and surface phosphonation, able to efficiently catalyze the synthesis of quinoxalines from 1,2diamines and -hydroxi ketones, under aerobic conditions. The obtained results indicate that the type and number of acid sites drive the reaction in terms of conversion and selectivity.Furthermore, our experimental and theoretical observations suggest that the preferred reaction pathway for this transformation, in the presence of the investigated acid carbon catalysts, involves cascade reactions including imination reaction between reactants, successive imineenamine and ceto-enol tautomerisms, heterocyclization followed by dehydration, and aromatization. While the acid sites seem to be a relevant role in each reaction step, the system formed by activated carbon and molecular oxygen could be behind the last oxidative reaction to give quinoxalines.

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Kinetic study of the decomposition of 2‐butanol on carbon‐based acid catalyst

Cited by 59 publications

References 53 publications

Review on Activated Carbons by Chemical Activation with FeCl3

Review on Activated Carbons by Chemical Activation with FeCl3

A Review on the Synthesis and Characterization of Biomass-Derived Carbons for Adsorption of Emerging Contaminants from Water

Porous carbons-derived from vegetal biomass in the synthesis of quinoxalines. Mechanistic insights

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