Selective oxidation of H2S to ammonium thiosulfate and elemental sulfur using mixtures of V-Bi-O and Sb2O4

2004 ◽  
Vol 21 (1) ◽  
pp. 104-109 ◽  
Author(s):  
Bong-Kuk Kim ◽  
Byung-Ha Hwang ◽  
Hwa-Soo Lee ◽  
Hee-Chul Woo ◽  
Dae-Won Park
Keyword(s):  
Selective Oxidation ◽  
Elemental Sulfur ◽  
Ammonium Thiosulfate

scholarly journals Catalytic behaviors of combined oxides derived from Mg/AlxFe1−x–Cl layered double hydroxides for H2S selective oxidation

2015 ◽  
Vol 5 (11) ◽  
pp. 4991-4999 ◽  
Author(s):  
Xin Zhang ◽  
Zhuo Wang ◽  
Yuyin Tang ◽  
Nanli Qiao ◽  
Yang Li ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Layered Double Hydroxides ◽  
Elemental Sulfur ◽  
Basic Site ◽  
Double Hydroxides

H2S was firstly adsorbed on the moderated basic site and then oxidized into elemental sulfur by Fe3+.

Selective oxidation of hydrogen sulfide to elemental sulfur using iron oxide catalysts on various supports

1993 ◽  
Vol 17 (1-2) ◽  
pp. 217-224 ◽  
Author(s):  
R.J.A.M. Terörde ◽  
P.J. van den Brink ◽  
L.M. Visser ◽  
A.J. van Dillen ◽  
J.W. Geus
Keyword(s):  
Hydrogen Sulfide ◽  
Iron Oxide ◽  
Selective Oxidation ◽  
Elemental Sulfur ◽  
Oxide Catalysts ◽  
Oxidation Of Hydrogen

Comparison of Methods for Determination of Sulfur in Fertilizer: Collaborative Study

1980 ◽  
Vol 63 (4) ◽  
pp. 854-858
Author(s):  
Virginia A Thorpe ◽  
◽  
L Bailey ◽  
E Erickson ◽  
L Fathergill ◽  
...  
Keyword(s):  
Elemental Sulfur ◽  
Collaborative Study ◽  
Total Sulfur ◽  
Comparison Of Methods ◽  
Liquid Fertilizer ◽  
Ammonium Thiosulfate ◽  
Coated Urea

Abstract Methods with applications for total sulfur (sulfate, elemental sulfur) in dry fertilizers, for total sulfur (sulfate, sulfite, thiosulfate, sulfide) in liquid fertilizers, for total sulfur (elemental sulfur) in sulfur-coated urea and elemental sulfur formulations, and for thiosulfate sulfur in ammonium thiosulfate liquid fertilizer (12-0-0, 26 S), and 7 samples with background and directions were submitted to 12 collaborating laboratories for comparison to official methods 2.160–2.161 and 2.162. The methods studied are simple and rapid, and recover the total sulfur in fertilizers containing high levels of elemental sulfur and thiosulfate sulfur. Method 2.160–2.161 does not recover total sulfur in these products. The first 3 methods have been adopted as official first action, and the present official methods for sulfur, 2.160–2.161 and 2.162, have been repealed, official first action.

Selective oxidation of H2S to elemental sulfur over VOx/SiO2 and V2O5 catalysts

2001 ◽  
Vol 211 (2) ◽  
pp. 213-225 ◽  
Author(s):  
Moon Young Shin ◽  
Chang Mo Nam ◽  
Dae Won Park ◽  
Jong Shik Chung
Keyword(s):  
Selective Oxidation ◽  
Elemental Sulfur ◽  
V2o5 Catalysts

The Catalytic Performance of Sol-Gel Alumina Supported Ti-Ce Catalysts for H2S Selective Oxidation to Elemental Sulfur

2018 ◽  
Vol 17 (5) ◽  
Author(s):  
H. Mehmet Tasdemir ◽  
Yavuz Yagizatli ◽  
Sena Yasyerli ◽  
Nail Yasyerli
Keyword(s):  
Reaction Time ◽  
Selective Oxidation ◽  
Elemental Sulfur ◽  
Sol Gel ◽  
Lewis Acidity ◽  
Molar Ratio ◽  
Feed Ratio ◽  
Impregnation Method ◽  
Durability Test ◽  
Adsorption Desorption

Abstract In this study, alumina supported Ti-Ce catalysts (10 % by weight and Ti/Ce molar ratio is 4:1) were prepared by using wet impregnation method and their catalytic activities were tested in H2S selective oxidation to elemental sulfur. The support alumina was synthesized by classical (SGC) and modified (SGM) sol-gel methods. The N2 adsorption-desorption, XRD, XPS, EDS and FTIR techniques were used to characterize the synthesized catalysts. The N2 adsorption-desorption isotherms showed that both catalysts have mesoporous structure. Only γ-Al2O3 crystalline phase together with amorphous structure were observed in the XRD patterns. The pyridine adsorbed FTIR analyzes showed that 10 %Ti-Ce@SGC and 10 %Ti-Ce@SGM catalysts have the same Lewis acidity. The activity tests were carried out at 250 °C and with a stoichiometric feed ratio of O2 to H2S being 0.5 for two different reaction times as 150 and 510 min. Complete conversion of H2S was obtained during 180 min. and 330 min. of reaction time over 10 %Ti-Ce@SGC and 10 %Ti-Ce@SGM, respectively. However, all catalysts showed very high sulfur selectivity. Sulfur deposition was detected over 10 %Ti-Ce@SGC catalyst both 150 and 510 min. of reaction time while it was observed after 510 min. of durability test over 10 %Ti-Ce@SGM catalyst. This can be the reason for the earlier loss of catalytic activity 10 %Ti-Ce@SGC than 10 %Ti-Ce@SGM.

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