mixed oxide
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2022 ◽  
Vol 521 ◽  
pp. 230950
Author(s):  
Isabel Rodríguez-García ◽  
Dmitry Galyamin ◽  
Laura Pascual ◽  
Pilar Ferrer ◽  
Miguel A. Peña ◽  
...  

2022 ◽  
Vol 6 (1) ◽  
pp. 4
Author(s):  
Nataliia Hes ◽  
Artur Mylin ◽  
Svitlana Prudius

Catalytic conversion of fructose to levulinic and formic acids over tin-containing superacid (H0 = −14.52) mixed oxide was studied. Mesoporous ZrO2–SiO2–SnO2 (Zr:Si:Sn = 1:2:0.4) was synthesized by the sol–gel method. The fructose transformation was carried out in a rotated autoclave at 160–190 °C for 1–5 h using a 20 wt.% aqueous solution. The results showed that doping ZrO2–SiO2 samples with Sn4+ ions improved both fructose conversion and selectivity toward levulinic and formic acids. Under optimal conditions of 180 °C, 3.5 h and fructose to catalyst weight ratio 20:1, levulinic and formic acids yields were 80% and 90%, respectively, at complete fructose conversion. At this, humic substances formed in the quantity of 10 wt.% based on the target products.


2022 ◽  
Author(s):  
Zhitao Han ◽  
Huan Du ◽  
Duo Xu ◽  
Yu Gao ◽  
Shaolong Yang ◽  
...  

FeMn/SnxTiO2 catalysts were synthesized by introducing Sn as an additive to modify TiO2 supports, and the Sn doping could improve the SO2 tolerance and low-temperature SCR activity significantly.


RSC Advances ◽  
2022 ◽  
Vol 12 (3) ◽  
pp. 1341-1351
Author(s):  
Shuaibo Zhang ◽  
Haixia Li ◽  
Anchao Zhang ◽  
Zhijun Sun ◽  
Xinmin Zhang ◽  
...  

MnxZr1 series catalysts were prepared by a coprecipitation method.


2022 ◽  
Vol 517 ◽  
pp. 112017
Author(s):  
David Kocián ◽  
Martin Hájek ◽  
Aleš Vávra ◽  
Karel Frolich ◽  
Jaroslav Kocík

2021 ◽  
Vol 222 (1) ◽  
pp. 163-169
Author(s):  
Chompoonuch Warangkanagool ◽  
Theerachai Bongkarn
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