Rate of reaction of hydrogen sulfide-carbonyl sulfide mixtures with fully calcined dolomite

1981 ◽  
Vol 15 (8) ◽  
pp. 966-968 ◽  
Author(s):  
Vivek S. Kamath ◽  
Thomas W. Petrie
Keyword(s):  
Hydrogen Sulfide ◽  
Carbonyl Sulfide ◽  
Rate Of Reaction

A solid thermal and fast synthesis of MgAl-hydrotalcite nanosheets and their applications in the catalytic elimination of carbonyl sulfide and hydrogen sulfide

2021 ◽  
Vol 45 (7) ◽  
pp. 3535-3545
Author(s):  
Guanqing Zhang ◽  
Xun Kan ◽  
Yong Zheng ◽  
Yanning Cao ◽  
Shijiang Liang ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Carbonyl Sulfide ◽  
Superior Performance ◽  
Fast Synthesis

MgAl hydrotalcites with high exposed OH− sites were designed, and showed superior performance for the catalytic elimination of COS and H2S.

Moving Past Quinone-Methides: Recent Advances toward Minimizing Electrophilic Byproducts from COS/H2S Donors

2021 ◽  
Vol 21 ◽  
Author(s):  
Michael Pluth
Keyword(s):  
Hydrogen Sulfide ◽  
Carbonic Anhydrase ◽  
Therapeutic Potential ◽  
Carbonyl Sulfide ◽  
Quinone Methide ◽  
Quinone Methides ◽  
On Demand ◽  
Physiological Processes ◽  
Recent Approach ◽  
Alternative Approaches

: Hydrogen sulfide (H2S) is an important biomolecule that plays key signaling and protective roles in different physiological processes. With the goals of advancing both the available research tools and the associated therapeutic potential of H2S, researchers have developed different methods to deliver H2S on-demand in different biological contexts. A recent approach to develop such donors has been to design compounds that release carbonyl sulfide (COS), which is quickly converted to H2S in biological systems by the ubiquitous enzyme carbonic anhydrase (CA). Although highly diversifiable, many approaches using this general platform release quinone methides or related electrophiles after donor activation. Many such electrophiles are likely scavenged by water, but recent efforts have also expanded alternative approaches that minimize the formation of electrophilic byproducts generated after COS release. This mini-review focuses specifically on recent examples of COS-based H2S donors that do not generate quinone methide byproducts after donor activation.

scholarly journals Removal of sulfur contaminants from biogas to enable direct catalytic methanation

2019 ◽  
Author(s):  
Christian Dannesboe ◽  
John Bøgild Hansen ◽  
Ib Johannsen
Keyword(s):  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Renewable Energy Sources ◽  
Sulfur Removal ◽  
Carbonyl Sulfide ◽  
Acidithiobacillus Thiooxidans ◽  
Carbon Utilization ◽  
Combined System ◽  
Renewable Biomass ◽  
Biogas Reactor

AbstractIn the near future, renewable energy sources will replace fossil energy. To allow full carbon utilization of renewable biomass, we have demonstrated a possible integration between a biogas reactor, an electrolysis unit, and a catalytic methanation reactor. Stringent removal of all sulfur contaminants in raw biogas is required to enable this integration. We demonstrate how existing bulk sulfur removal solutions, like a biotrickling filter loaded with Acidithiobacillus thiooxidans and impregnated activated carbon, are unable to meet this requirement. Only the main sulfur contaminant hydrogen sulfide (H2S) can effectively be removed. Contaminants carbon disulfide (CS2), dimethyl sulfide (DMS), and carbonyl sulfide (COS) will leak through the carbon filter, long before hydrogen sulfide can be detected. Utilization of surplus oxygen from the combined system is proven problem free and allows sulfur removal without introducing contaminants. Provided that a recommended sulfur guard is included, the proposed design is ready for full-scale implementation.

scholarly journals Bio-orthogonal “click-and-release” donation of caged carbonyl sulfide (COS) and hydrogen sulfide (H2S)

2017 ◽  
Vol 53 (8) ◽  
pp. 1378-1380 ◽  
Author(s):  
Andrea K. Steiger ◽  
Yang Yang ◽  
Maksim Royzen ◽  
Michael D. Pluth
Keyword(s):  
Hydrogen Sulfide ◽  
Click Reaction ◽  
Carbonyl Sulfide ◽  
Diels Alder ◽  
Inverse Electron Demand ◽  
New Strategy ◽  
Electron Demand

The inverse-electron demand Diels–Alder (IEDDA) click reaction between thiocarbamate-functionalized trans-cyclooctenes and tetrazines provides a new strategy for bio-orthogonal COS/H2S delivery.

scholarly journals An intercomparison of aircraft instrumentation for tropospheric measurements of carbonyl sulfide, hydrogen sulfide, and carbon disulfide

1993 ◽  
Vol 98 (D12) ◽  
pp. 23353 ◽  
Author(s):  
Gerald L. Gregory ◽  
Douglas D. Davis ◽  
Donald C. Thornton ◽  
James E. Johnson ◽  
Alan R. Bandy ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Carbon Disulfide ◽  
Carbonyl Sulfide ◽  
Tropospheric Measurements

Simultaneous removal of carbonyl sulfide and hydrogen sulfide from coke oven gas at low temperature by iron oxide

1992 ◽  
Vol 31 (1) ◽  
pp. 415-419 ◽  
Author(s):  
Kouichi Miura ◽  
Kazuhiro Mae ◽  
Tomohiko Inoue ◽  
Tomoyuki Yoshimi ◽  
Hiroyuki Nakagawa ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Iron Oxide ◽  
Low Temperature ◽  
Carbonyl Sulfide ◽  
Coke Oven ◽  
Simultaneous Removal ◽  
Coke Oven Gas

Studies of the Hard Rubber Reaction. I. Heat of Reaction

1963 ◽  
Vol 36 (4) ◽  
pp. 1059-1070 ◽  
Author(s):  
M. L. Bhaumik ◽  
D. Banerjee ◽  
Anil K. Sircar
Keyword(s):  
Thermal Analysis ◽  
Hydrogen Sulfide ◽  
Differential Thermal Analysis ◽  
Exothermic Reaction ◽  
Heat Evolution ◽  
Linear Increase ◽  
Heat Of Reaction ◽  
Dehydrogenation Reaction ◽  
Rate Of Reaction

Abstract A method for the determination of the heat of the hard-rubber reaction by the application of differential thermal analysis is reported. The heat of reaction was determined with stocks containing different rubber/sulfur ratios and also with a 68/32 stock, preheated to contain different amounts of combined sulfur. Heat evolution is observed first with samples containing about 7 per cent sulfur and therefrom the amount of heat evolved shows a nearly linear increase up to 30 per cent sulfur. With increasing combined sulfur in the 68/32 stock, the quantity of exothermic heat gradually diminishes; so also does the temperature of initiation, i.e., the temperature at which heat evolution appears to begin. Initiation of the exothermic reaction appears to be a function of composition and temperature of the mass. An increase in the rate of reaction was observed when the composition reached 0.5 g-atom of sulfur per isoprene unit. An endothermic dehydrogenation reaction is observed at the end of the hard-rubber reaction. This, however, does not affect the determination of exothermic heat, because there is similar dehydrogenation taking place in the reference material (ebonite) which almost balances this heat loss. The final product has a lower sulfur content due to loss of sulfur as hydrogen sulfide.

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