Carbon Dioxide Fixation into Organic Compounds

Aresta, Michele; Dibenedetto, Angela

doi:10.1007/978-94-017-0245-4_9

Cited by 27 publications

(30 citation statements)

References 84 publications

(71 reference statements)

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“…The absorbed gas is further liberated in a separate vessel by raising the temperature and/or lowering the pressure above the solution, the regenerated solution being recirculated to the absorption unit. The main shortcoming of this technology is ascribed to the extremely high‐energy demands, lying in the range 4–6 GJ/t CO 2 avoided (including heating and electrical consumption),3, 4 as well as to amine losses and degradation in the presence of O 2 and SO 2 . Alternative processes based on pressure and thermal swing adsorption relying on well‐engineered solid adsorbents have also been considered for CO 2 separation 5, 6…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, their practical use for CO 2 capture has often been limited due to their insufficient thermal, mechanical, and chemical stability and to their low permeances. As a matter of fact, a CO 2 /N 2 permselectivity of 50 associated to a CO 2 permeance of 3 nmol m −2 s −1 Pa −1 (1‐μm thick) can be taken as the present upper limit of glassy polymeric membranes 3, 8. Recent advances on rubbery polymeric membranes offer materials with improved CO 2 permeances (up to three orders of magnitude higher),9, 10 but most often at the expenses of lower selectivity toward CO 2 separation, involving high energy requirements (>3.5 GJ/t CO 2 avoided) 9.…”

Section: Introductionmentioning

confidence: 99%

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Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases

Sublet¹,

Pera‐Titus²,

Guilhaume³

et al. 2011

AIChE Journal

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A detailed survey of the effect of moisture on the CO2/N2 permeation and separation performance of Mobile Five (MFI) zeolite membranes in view of downstream postcombustion CO2 capture applications in power plants and incinerators is presented. The membranes, displaying a nanocomposite architecture, have been prepared on α‐alumina tubes by pore‐plugging hydrothermal synthesis at 443 K for 89 h using a precursor clear solution with molar composition 1 SiO2:0.45 tetrapropylammonium hydroxide:27.8 H2O. The synthesized membranes present reasonable permeation and CO2/N2 separation properties even in the presence of high water concentrations in the gas stream. A critical discussion is also provided on the technico‐economical feasibility (i.e., CO2 recovery, CO2 purity in the permeate, module volume, and energy consumption) of a membrane cascade unit for CO2 capture and liquefaction/supercritical storage from standard flue gases emitted from an incinerator. Our results suggest that the permeate pressure should be kept under primary vacuum to promote the CO2 driving force within the membrane. © 2011 American Institute of Chemical Engineers AIChE J, 58: 3183–3194, 2012

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases

Sublet¹,

Pera‐Titus²,

Guilhaume³

et al. 2011

AIChE Journal

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show abstract

“…(1) Identifying pathways and products Although a large variety of chemical reactions that incorporate CO 2 are known today, [16][17][18][19] many more can be envisaged. Thus, there is a continuing need for fundamental science to develop new chemistry based on the CO 2 molecule.…”

Section: Introductionmentioning

confidence: 99%

Chemical Technologies for Exploiting and Recycling Carbon Dioxideinto the Value Chain

et al. 2011

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While experts in various fields discuss the potential of carbon capture and storage (CCS) technologies, the utilization of carbon dioxide as chemical feedstock is also attracting renewed and rapidly growing interest. These approaches do not compete; rather, they are complementary: CCS aims to capture and store huge quantities of carbon dioxide, while the chemical exploitation of carbon dioxide aims to generate value and develop better and more-efficient processes from a limited part of the waste stream. Provided that the overall carbon footprint for the carbon dioxide-based process chain is competitive with conventional chemical production and that the reaction with the carbon dioxide molecule is enabled by the use of appropriate catalysts, carbon dioxide can be a promising carbon source with practically unlimited availability for a range of industrially relevant products. In addition, it can be used as a versatile processing fluid based on its remarkable physicochemical properties.

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“…Glycerol carbonate is typically produced in a two-step process from the carboxylation of ethane or propene oxide and a subsequent reaction with glycerol [10]. A one-step synthesis of glycerol carbonate has also been reported by several authors through reaction of glycerol with supercritical CO 2 [11], or using urea [12,13] or other reagents [14]. Urea glycerolysis is an economically attractive procedure because of the low cost of the reagents and higher yields compared with other routes [15].…”

Section: Introductionmentioning

confidence: 99%

Value-Added Products from Urea Glycerolysis Using a Heterogeneous Biosolids-Based Catalyst

et al. 2018

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Although thermal hydrolysis of digested biosolids is an extremely promising strategy for wastewater management, the process economics are prohibitive. Here, a biosolids-based material generated through thermal hydrolysis was used as a catalyst for urea glycerolysis performed under several conditions. The catalytic system showed remarkable activity, reaching conversion values of up to 70.8 ± 0.9% after six hours, at 140 °C using a catalyst/glycerol weight ratio of 9% and an air stream to remove NH3 formed during the process. Temperature played the most substantial role among reaction parameters; increasing temperature from 100 °C to 140 °C improved conversion by 35% and glycidol selectivity by 22%. Furthermore, the catalyst retained good activity even after the fourth catalytic run (conversion rate of 56.4 ± 1.3%) with only a slight decrease in glycidol selectivity. Thus, the use of a biosolids-based catalyst may facilitate conversion of various glycerol sources (i.e., byproduct streams from biodiesel production) into value-added products such as glycidol, and may also improve the economic feasibility of using thermal hydrolysis for treatment of biosolids.

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Carbon Dioxide Fixation into Organic Compounds

Cited by 27 publications

References 84 publications

Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases

Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases

Chemical Technologies for Exploiting and Recycling Carbon Dioxideinto the Value Chain

Value-Added Products from Urea Glycerolysis Using a Heterogeneous Biosolids-Based Catalyst

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Carbon Dioxide Fixation into Organic Compounds

Cited by 27 publications

References 84 publications

Technico‐economical assessment of MFI‐type zeolite membranes for CO2 capture from postcombustion flue gases

Technico‐economical assessment of MFI‐type zeolite membranes for CO2 capture from postcombustion flue gases

Chemical Technologies for Exploiting and Recycling Carbon Dioxideinto the Value Chain

Value-Added Products from Urea Glycerolysis Using a Heterogeneous Biosolids-Based Catalyst

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Product

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Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases

Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases