Carbonyl Sulfide:  A Review of Its Chemistry and Properties

Svoronos, Paris D N; Bruno, Thomas J.

doi:10.1021/ie020365n

Cited by 163 publications

(133 citation statements)

References 188 publications

Supporting

Mentioning

122

Contrasting

Unclassified

Order By: Relevance

“…Like H 2 S, COS is a gas that has both natural (volcanoes, hot springs, oils and trees) and man-made (biomass and fossil fuel consumption, wastewater treatment, etc.) origins and it is the most prevalent sulfur gas in the atmosphere (152). COS is the only volatile sulfur that is increased in exhaled air of patients with cystic fibrosis (69) or of lung transplant patients during the acute rejection phase (150).…”

Section: Other Potential Biosynthetic Pathwaysmentioning

confidence: 99%

The therapeutic potential of hydrogen sulfide: separating hype from hope

Olson

2011

American Journal of Physiology-Regulatory, Integrative and Comp

162

154

View full text Add to dashboard Cite

Hydrogen sulfide (H2S) has become the hot new signaling molecule that seemingly affects all organ systems and biological processes in which it has been investigated. It has also been shown to have both proinflammatory and anti-inflammatory actions and proapoptotic and anti-apoptotic effects and has even been reported to induce a hypometabolic state (suspended animation) in a few vertebrates. The exuberance over potential clinical applications of natural and synthetic H2S-“donating” compounds is understandable and a number of these function-targeted drugs have been developed and show clinical promise. However, the concentration of H2S in tissues and blood, as well as the intrinsic factors that affect these levels, has not been resolved, and it is imperative to address these points to distinguish between the physiological, pharmacological, and toxicological effects of this molecule. This review will provide an overview of H2S metabolism, a summary of many of its reported “physiological” actions, and it will discuss the recent development of a number of H2S-donating drugs that show clinical potential. It will also examine some of the misconceptions of H2S chemistry that have appeared in the literature and attempt to realign the definition of “physiological” H2S concentrations upon which much of this exuberance has been established.

show abstract

Section: Other Potential Biosynthetic Pathwaysmentioning

confidence: 99%

The therapeutic potential of hydrogen sulfide: separating hype from hope

Olson

2011

American Journal of Physiology-Regulatory, Integrative and Comp

162

154

View full text Add to dashboard Cite

show abstract

“…For example, this has been reported in a comparative study on commercial catalysts based on alumina (Kaiser-201, Kaiser Aluminum and Chemicals) and titania (CRS31, Axens) [91,92]. Concerning any kind of catalyst, the specific surface area is a key parameter, COS conversion rate being favored when catalyst surface increases [88].…”

Section: Cos Removalmentioning

confidence: 95%

“…The most employed strategy is thus to favor the COS hydrolysis in presence of a catalyst to improve the reaction kinetic. For this purpose, most studied catalysts in the literature are metal oxides such as TiO 2 , Al 2 O 3 , ZnO and ZrO 2 [87,88]. Especially, catalyst activity seems to be related to catalyst surface basicity [89,90].…”

Section: Cos Removalmentioning

confidence: 99%

Synthesis Gas Purification

Chiche

Diverchy

Lucquin

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

Re´sume´-Purification des gaz de synthe`se -Les proce´de´s de synthe`se de biocarburants par voie Fischer-Tropsch (FT), voies B-XTL, repre´sentent des alternatives prometteuses pour la production d'e´nergie. Ces proce´de´s permettent la conversion en carburants de synthe`se de biomasse lignocellulosique, e´ventuellement mise en oeuvre en me´lange avec des charges fossiles telles que petcoke, charbons ou re´sidus sous vide. Pour ce faire, une e´tape de gaze´ification convertit la charge carbone´e en un gaz de synthe`se (me´lange de CO et H 2 ), lequel, apre`s ajustement du ratio H 2 /CO et e´limination du CO 2 , subit ensuite la re´action de FischerTropsch. Les gaz de synthe`se contiennent cependant de nombreuses impurete´s qui ne´cessitent d'eˆtre e´limine´es afin d'e´viter l'empoisonnement des catalyseurs Fischer-Tropsch. En raison de la grande varie´te´de charges pouvant eˆtre mises en oeuvre, la composition des gaz de synthe`se est susceptible de subir d'importantes variations, en particulier de part la nature des impurete´s (e´le´ments, spe´ciation) pre´sentes ainsi que leurs teneurs relatives. La composition des gaz de synthe`se est e´galement soumise a`des spe´cifications extreˆmement se´ve`res en terme de purete´lie´es a`l'importante sensibilite´aux poisons des catalyseurs FT. Pour ces raisons, la purification des gaz de synthe`se constitue un de´fi majeur pour le de´veloppement des proce´de´s B-XTL. Dans cet article, nous pre´sentons les principaux enjeux lie´s a`la purification des gaz de synthe`se. Les diffe´rents types d'impurete´s pouvant eˆtre pre´sentes dans les gaz de synthe`se sont pre´sente´es. L'influence de la nature de la charge, des technologies de gaze´ification ainsi que des conditions ope´ratoires associe´es sur la nature des impurete´s et leurs teneurs relatives est discute´e. Une attention particulie`re est porte´e au devenir des compose´s soufre´s, azote´s, des haloge`nes, me´taux lourds et me´taux de transition. Les principales technologies de purification des gaz de synthe`se (adsorption, absorption, re´actions catalytiques, etc.) sont finalement de´crites, ainsi que les de´fis associe´s.Abstract -Synthesis Gas Purification -Fischer-Tropsch (FT) based B-XTL processes are attractive alternatives for future energy production. These processes aim at converting lignocellulosic biomass possibly in co-processing with petcoke, coal, or vacuum residues into synthetic biofuels. A gasification step converts the feed into a synthesis gas (CO and H 2 mixture), which undergoes the Fischer-Tropsch reaction after H 2 /CO ratio adjustment and CO 2 removal. However synthesis gas also contains various impurities that must be removed in order to prevent Fischer-Tropsch catalyst poisoning. Oil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 68 (2013), No. 4, pp. 707-723 Copyright Ó 2013, IFP Energies nouvelles DOI: 10.2516 Due to the large feedstocks variety that can be processed, significant variations of the composition of the synthesis gas are expected. Especially, this affects the ...

show abstract

“…Applications also include the use as a catalyst or reactant in polymerization or in the synthesis of substituted ureas, urethanes and carbamates [2][3][4][5]. The detailed chemistry and physicochemical properties of COS are compiled in two reviews covering preparation, properties and chemical reactions related to COS as well as the industrial applications and environmental problems associated with COS [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of H2 in the synthesis of COS using liquid sulfur and CO or CO2 as reactants

Kaufmann¹,

Gutiérrez²,

Zhu³

et al. 2010

Res Chem Intermed

View full text Add to dashboard Cite

The synthesis of COS from CO, CO 2 and liquid sulfur in the presence and absence of hydrogen was explored. The reaction of H 2 with liquid sulfur produced H 2 S and polysulfanes, which increase the reactivity of liquid sulfur and provide alternative complementary reaction routes for the formation of COS. The reaction from CO 2 proceeds by forming CO as intermediate. Elevated pressure favors formation of COS from both carbon oxides due to the increasing residence time and the saturation of gases in the liquid. Above 350°C, the solubility of H 2 S in sulfur and the hydrogenation of COS limit the conversion of CO. The approach provides a highly efficient method for the preparation of COS under mild reaction conditions, without using a catalyst or water adsorbents.

show abstract

Carbonyl Sulfide: A Review of Its Chemistry and Properties

Cited by 163 publications

References 188 publications

The therapeutic potential of hydrogen sulfide: separating hype from hope

The therapeutic potential of hydrogen sulfide: separating hype from hope

Synthesis Gas Purification

Effect of H2 in the synthesis of COS using liquid sulfur and CO or CO2 as reactants

Contact Info

Product

Resources

About