Coated sulfated zirconia/SAPO-34 for the direct conversion of CO<sub>2</sub> to light olefins

Ramírez, Adrián; Chowdhury, Abhishek Dutta; Çağlayan, Mustafa; Rodriguez‐Gomez, Alberto; Wehbe, Nimer; Abou-Hamad, Edy; Gevers, Lieven; Ould‐Chikh, Samy; Gascón, Jorge

doi:10.1039/c9cy02532d

Cited by 37 publications

(26 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“… 1 − 4 More recently, sulfated zirconia has also emerged as a promising catalyst for several biorefinery processes, such as esterification, biodiesel preparation, 5 − 10 furfural synthesis 11 − 16 and conversion, 17 − 20 condensation of ketones, 21 glycerol utilization, 22 − 24 and, conversion of CO 2 to light olefins. 25 Among the biorefinery processes, the upgrading of biomass derived volatile fatty acids (C 3 –C 6 ) to corresponding ketones (ketonization reactions) is a promising strategy for the synthesis of biofuels.…”

Section: Introductionmentioning

confidence: 99%

“…Sulfated zirconia (SZ) is well established as a robust and efficient solid acid catalyst for a variety of reactions of high industrial importance, such as hydrocarbon isomerization, methanol conversion to hydrocarbons, alkylation, acylation, esterification, dehydration, and Fischer–Tropsch processes. − More recently, sulfated zirconia has also emerged as a promising catalyst for several biorefinery processes, such as esterification, biodiesel preparation, − furfural synthesis − and conversion, − condensation of ketones, glycerol utilization, − and, conversion of CO 2 to light olefins . Among the biorefinery processes, the upgrading of biomass derived volatile fatty acids (C 3 –C 6 ) to corresponding ketones (ketonization reactions) is a promising strategy for the synthesis of biofuels.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Role of Sulfation of Zirconia Catalysts in Vapor Phase Ketonization of Acetic Acid

et al. 2021

View full text Add to dashboard Cite

The effect of the sulfation of zirconia catalysts on their structure, acidity/basicity, and catalytic activity/selectivity toward the ketonization of organic acids is investigated by a combined experimental and computational method. Here, we show that, upon sulfation, zirconia catalysts exhibit a significant increase in their Brønsted and Lewis acid strength, whereas their Lewis basicity is significantly reduced. Such changes in the interplay between acid–base sites result in an improvement of the selectivity toward the ketonization process, although the measured conversion rates show a significant drop. We report a detailed DFT investigation of the putative surface species on sulfated zirconia, including the possible formation of dimeric pyrosulfate (S 2 O 7 2– ) species. Our results show that the formation of such a dimeric system is an endothermic process, with energy barriers ranging between 60.0 and 70.0 kcal mol –1 , and which is likely to occur only at high SO 4 2– coverages (4 S/nm 2 ), high temperatures, and dehydrating conditions. Conversely, the formation of monomeric species is expected at lower SO 4 2– coverages, mild temperatures, and in the presence of water, which are the usual conditions experienced during the chemical upgrading of biofuels.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Role of Sulfation of Zirconia Catalysts in Vapor Phase Ketonization of Acetic Acid

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The same group observed that changing the zeolite to SAPO-34 and ZrS (zirconium sulfide) coating improved the light olefin selectivity . Zr precursor (Zr(SO 4 ) 2 ) tends to form a bulky tetramer ([Zr 4 (OH) 8 ·16H 2 O] 8 + ) in solution, which creates a thin layer as it cannot enter the pores of SAPO-34.…”

Section: Catalyst Design For Co2 To Olefins Through Different Reactio...mentioning

confidence: 99%

Review of Catalyst Design and Mechanistic Studies for the Production of Olefins from Anthropogenic CO₂

et al. 2020

View full text Add to dashboard Cite

The use of anthropogenic CO 2 as a carbon source for the synthesis of value-added chemicals, mainly light olefins, is a green route that has not been extensively explored. Designing robust catalysts for the production of olefins is a challenge due to the current lack of clarity on the complex CO 2 hydrogenation mechanism. This review aims to elucidate the production of olefins from CO 2 with an emphasis on material design and existing mechanistic evidence. The major focus is on catalyst design and structure−activity relationships that can mold future progress in this area with significant relevance to industrial implementation. The mechanisms used in these catalytic routes are discussed at length with appropriate examples. Furthermore, practical reactor design, efficient process engineering, and the importance of life cycle analysis are discussed in depth. These are relevant parameters that need to be integrated with catalyst design to overcome scientific and technological challenges to reach the commercial viability of this technology.

show abstract

“…Ramírez eta kol.-ek [25] Fe 2 O 3 @K 2 O katalizatzailea azidotasun eta topologia hautakorra duen katalizatzaile azidoarekin konbinatzea proposatzen dute. Horrela, SaPO-34-arekin konbinatuz gero, olefinen hautakortasuna % 45ekoa da, eta bihurtze-maila % 50ekoa 375 ºC-tan (ohiko FT sintesian erabiltzen den tenperatura baino altuagoa) eta 30 bar-etan [26]. Cui eta kol.-ek [27] aromatikoen % 75,6ko hautakortasuna eta CO 2 -aren % 41,2ko bihurtze-maila lortu dituzte, ZnFeO x spinela katalizatzailea HZSM-5 zeolitarekin konbinatuz.…”

Section: Co 2 -Aren Hidrogenazioa Co 2 + H 2 Erabiliz Lehengai Moduraunclassified

CO2-aren balorizazio zuzena hidrokarburoak ekoizteko

Ateka

Portillo

Ereña

et al. 2021

EKAIA

View full text Add to dashboard Cite

Erregai fosilen errekuntzek eragindako klima aldaketa pairatzea da egungo gizartearen erronka nagusietariko bat. Errekuntza hauek isuritako berotegi-efektuko gasen artean ugariena karbono dioxidoa (CO2) da, hauen % 75 inguru. Beraz, honen emisioak murriztea eta dagoeneko isuritakoa bahitzea ezinbestekoa da klimaaldaketak eragindako ingurumen-kaltea ahalik eta gehien murrizteko. Horretarako, ezinbestekoak dira CCU teknologiak (karbono dioxidoaren bahiketa eta erabilera). CO2-a erabiltzen duten prozesuen artean, bihurtze katalitikoak etorkizun laburrean ezartzeko aukera onak ditu. Prozesu katalitikoen artean, ohikoena CO2-aren hidrogenazioa da, hidrokarburoak lortuz. Prozesu honen moldakortasuna da bere ezaugarri interesgarrienetakoa, izan ere modu hautakorrean hidrokarburo ezberdinak ekoizten dira; besteak beste, olefinak, parafina astunak zein arinak eta aromatikoak. Operazio baldintzak, katalizatzaile motak eta beren ezaugarriak, zein lorturiko CO2-aren balorizazio mailak ekoiztu nahi den hidrokarburoaren araberakoak dira.

show abstract

Coated sulfated zirconia/SAPO-34 for the direct conversion of CO₂ to light olefins

Abstract: The conversion of CO2 to light olefins via bifunctional catalysts (i.e. metal oxides/zeolites) is a promising approach to tackle CO2 emissions and, at the same time, reduce fossil-fuel dependence by closing the carbon cycle.

Cited by 37 publications

References 47 publications

Role of Sulfation of Zirconia Catalysts in Vapor Phase Ketonization of Acetic Acid

Role of Sulfation of Zirconia Catalysts in Vapor Phase Ketonization of Acetic Acid

Review of Catalyst Design and Mechanistic Studies for the Production of Olefins from Anthropogenic CO₂

CO2-aren balorizazio zuzena hidrokarburoak ekoizteko

Contact Info

Product

Resources

About

Coated sulfated zirconia/SAPO-34 for the direct conversion of CO2 to light olefins

Abstract: The conversion of CO2 to light olefins via bifunctional catalysts (i.e. metal oxides/zeolites) is a promising approach to tackle CO2 emissions and, at the same time, reduce fossil-fuel dependence by closing the carbon cycle.

Cited by 37 publications

References 47 publications

Role of Sulfation of Zirconia Catalysts in Vapor Phase Ketonization of Acetic Acid

Role of Sulfation of Zirconia Catalysts in Vapor Phase Ketonization of Acetic Acid

Review of Catalyst Design and Mechanistic Studies for the Production of Olefins from Anthropogenic CO2

CO2-aren balorizazio zuzena hidrokarburoak ekoizteko

Contact Info

Product

Resources

About

Coated sulfated zirconia/SAPO-34 for the direct conversion of CO₂ to light olefins

Review of Catalyst Design and Mechanistic Studies for the Production of Olefins from Anthropogenic CO₂