scholarly journals The Hydrolysis of Carbonyl Sulfide at Low Temperature: A Review

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Shunzheng Zhao ◽  
Honghong Yi ◽  
Xiaolong Tang ◽  
Shanxue Jiang ◽  
Fengyu Gao ◽  
...  

Catalytic hydrolysis technology of carbonyl sulfide (COS) at low temperature was reviewed, including the development of catalysts, reaction kinetics, and reaction mechanism of COS hydrolysis. It was indicated that the catalysts are mainly involved metal oxide and activated carbon. The active ingredients which can load on COS hydrolysis catalyst include alkali metal, alkaline earth metal, transition metal oxides, rare earth metal oxides, mixed metal oxides, and nanometal oxides. The catalytic hydrolysis of COS is a first-order reaction with respect to carbonyl sulfide, while the reaction order of water changes as the reaction conditions change. The controlling steps are also different because the reaction conditions such as concentration of carbonyl sulfide, reaction temperature, water-air ratio, and reaction atmosphere are different. The hydrolysis of carbonyl sulfide is base-catalyzed reaction, and the force of the base site has an important effect on the hydrolysis of carbonyl sulfide.

2019 ◽  
Vol 55 (75) ◽  
pp. 11259-11262 ◽  
Author(s):  
Fangsong Guo ◽  
Shanrong Li ◽  
Yidong Hou ◽  
Junkang Xu ◽  
Sen Lin ◽  
...  

Metalated carbon nitrides were designed and prepared by metalation of carbon nitrides with alkali metal ions, and the metalated carbon nitrides with potassium act as efficient base catalysts for hydrolysis of COS at low temperature.


2014 ◽  
Vol 23 (2) ◽  
pp. 221-226 ◽  
Author(s):  
Xin Sun ◽  
Ping Ning ◽  
Xiaolong Tang ◽  
Honghong Yi ◽  
Kai Li ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 20530-20537 ◽  
Author(s):  
Huibin Guo ◽  
Lihong Tang ◽  
Kai Li ◽  
Ping Ning ◽  
Jinhui Peng ◽  
...  

The catalytic hydrolysis of carbonyl sulfide (COS) at 50 °C over Mg–Al–Ce mixed oxides derived from hydrotalcite-like compounds was studied.


1994 ◽  
Vol 346 ◽  
Author(s):  
A. Manthiram ◽  
Y. T. Zhu ◽  
A. Dananjay

ABSTRACTReduction of aqueous solutions of tungstates, molybdates or vanadates by aqueous alkali metal borohydrides at ambient‐temperature results in a formation of dark colored gel. The gel is amorphous to X‐ray diffraction and crystallizes sharply at around 300‐500 °C to yield reduced transition metal oxides such as the oxide bronzes, NaxMyOz, or the binary oxides, MO2 (M = V, Mo or W). The nature and composition of the products formed are strongly influenced by the reaction conditions such as the reaction pH as well as the concentration and amount of the reagents. Experimental procedures to obtain the different phases are presented. This novel low‐temperature approach has a potential to access new metastable phases.


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