Nanoporous Materials as H<sub>2</sub>S Adsorbents for Biogas Purification: a Review

Peluso, Antonio; Gargiulo, Nicola; Aprea, Paolo; Pepe, Francesco; Caputo, Domenico

doi:10.1080/15422119.2018.1476978

Cited by 80 publications

(42 citation statements)

References 77 publications

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“…[28] It has been used in related Friedel-Crafts acylationr eactions with SbCl 5 ,T iCl 4 ,f luorides, fluoroborates, Nafion-silica composites, and zeolites as catalysts at temperatures up to 190 8C, [29][30][31][32][33][34][35][36] and in intramolecular Friedel-Crafts alkylationsa nd acylations with polyphosphoric acid as catalyst at reaction temperatures up to 130 8C. [43] Sulfur compounds can be produced from biogas [44] and,f or some applications,a lso biomass gasification [45] to provide renewable sources of SO 2 .Awide range of processes are being developedf or renewable H 2 production. [38][39][40][41] Sulfolane is biodegradable under aerobic conditions [42] and can be produced from butadiene, SO 2 ,a nd H 2 .…”

Section: Resultsmentioning

confidence: 99%

Highly Porous Hypercrosslinked Polymers Derived from Biobased Molecules

Björnerbäck

Hedin

2019

ChemSusChem

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FredrikB jçrnerbäck andN iklas Hedin* [a] Highly porousa nd hyper-cross-linked polymers (HCPs) have a range of applications and are typicallys ynthesized in an unsustainable manner.H erein, HCPs were synthesized from abundant biobased or biorelatedc ompounds in sulfolane with iron(III) chloride as Lewis acid catalyst. As reactants, quercetin, tannic acid, phenol, 1,4-dimethoxybenzene, glucose, and a commercial bark extract wereu sed. The HCPs had high CO 2 uptake (up to 3.94 mmol g À1 at 0 8Ca nd 1bar), total pore volumes (up to 1.86 cm 3 g À1 ), and specific surfacea reas (up to 1440 m 2 g À1 ). 1 HNMR, 13 CNMR, and IR spectroscopy,w ideangle X-ray scattering, elementala nalysis, and SEM revealed, for example, that the HCPs consisted of amorphous and crosslinked aromatic and phenolic structures with significant contents of aliphatics, oxygen, and sulfur.[a] Dr.

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Section: Resultsmentioning

confidence: 99%

Highly Porous Hypercrosslinked Polymers Derived from Biobased Molecules

Björnerbäck

Hedin

2019

ChemSusChem

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“…Porosity and surface chemistry, coupled to operating conditions (relative humidity, H 2 S concentration, O 2 concentration, presence of other contaminants in biogas stream, and temperature) are the main characteristics that involve the gas cleaning mechanisms [14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

H2S Removal with Sorbent Obtained from Sewage Sludges

et al. 2020

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Biochar obtained from sewage sludges are adopted for biogas cleaning. Sewage sludges are treated considering temperature, dwell time, activating agent, heating, and flow rate. The best performances achieved are registered considering the char produced at 400 °C using CO2 as an activating agent with a dwell time of 2 h. The adsorption capacity for the biogas cleaning CH4/CO2/H2S (20 ppm(v)) increased from 1.3 mg/g to 5.9 mg/g with the bed height. Future research with chemical activation processes will be made to improve the adsorption capacity achieved to produce cheaper sorbents than commercial ones.

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“…Carbon gels have received great attention because of their applications in water purification [1], electrochemical energy storage [2], catalysis [3] and gas separation [4]. These properties and applications are related to their developed surface areas, allowing for excellent adsorption properties [5].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Properties of Carbon Gels

et al. 2019

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The electromagnetic properties of various carbon gels, produced with different bulk densities, were investigated in a wide frequency range (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36). The values of dielectric permittivity and electrical conductivity at 129 Hz were found to be very high, i.e., more than 10 5 and close to 100 S/m, respectively. Both strongly decreased with frequency but remained high in the microwave frequency range (close to 10 and about 0.1 S/m, respectively, at 30 GHz). Moreover, the dielectric permittivity and the electrical conductivity strongly increased with the bulk density of the materials, according to power laws at low frequency. However, the maximum of microwave absorption was observed at lower densities. The DC conductivity slightly decreased on cooling, according to the Arrhenius law. The lower activation energies are typical of carbon gels presenting lower DC electrical conductivities, due to a higher number of defects. High and thermally stable electromagnetic properties of carbon gels, together with other unique properties of these materials, such as lightness and chemical inertness, open possibilities for producing new electromagnetic coatings.

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Nanoporous Materials as H₂S Adsorbents for Biogas Purification: a Review

Cited by 80 publications

References 77 publications

Highly Porous Hypercrosslinked Polymers Derived from Biobased Molecules

Highly Porous Hypercrosslinked Polymers Derived from Biobased Molecules

H2S Removal with Sorbent Obtained from Sewage Sludges

Electromagnetic Properties of Carbon Gels

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Nanoporous Materials as H2S Adsorbents for Biogas Purification: a Review

Cited by 80 publications

References 77 publications

Highly Porous Hypercrosslinked Polymers Derived from Biobased Molecules

Highly Porous Hypercrosslinked Polymers Derived from Biobased Molecules

H2S Removal with Sorbent Obtained from Sewage Sludges

Electromagnetic Properties of Carbon Gels

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Product

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Nanoporous Materials as H₂S Adsorbents for Biogas Purification: a Review