Experimental Microkinetic Approach of De-NOx by NH3 on V2O5/WO3/TiO2 Catalysts. 5. Impacts of the NH3-H2O Coadsorption on the Coverage of Sulfated TiO2-Based Solids

2018 ◽  
Vol 122 (43) ◽  
pp. 24619-24633 ◽  
Author(s):  
François Giraud ◽  
Julien Couble ◽  
Christophe Geantet ◽  
Nolven Guilhaume ◽  
Stephane Loridant ◽  
...  
Keyword(s):  
Sulfated Tio2

scholarly journals Sulfated TiO2/SnO2 nanocomposite as a green heterogeneous catalyst for direct amide formation reaction

2021 ◽  
Vol 3 ◽  
pp. 100102
Author(s):  
S.M. Patil ◽  
S.A. Vanalakar ◽  
S.A. Sankpal ◽  
S.P. Deshmukh ◽  
S.D. Delekar
Keyword(s):  
Heterogeneous Catalyst ◽  
Formation Reaction ◽  
Amide Formation ◽  
Sulfated Tio2

scholarly journals Hydro-Pyrolysis and Catalytic Upgrading of Biomass and Its Hydroxy Residue Fast Pyrolysis Vapors

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3474 ◽  
Author(s):  
Yichen Liu ◽  
James J. Leahy ◽  
Jacek Grams ◽  
Witold Kwapinski
Keyword(s):  
Aromatic Hydrocarbons ◽  
Average Molecular Weight ◽  
Fast Pyrolysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Gas ◽  
Catalytic Upgrading ◽  
Lower Viscosity ◽  
Bio Oil ◽  
Sulfated Tio2 ◽  
Hydrolysis Residue

Fast pyrolysis of Miscanthus, its hydrolysis residue and lignin were carried with a pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) followed by online vapor catalytic upgrading with sulfated ZrO2, sulfated TiO2 and sulfated 60 wt.% ZrO2-TiO2. The most evident influence of the catalyst on the vapor phase composition was observed for aromatic hydrocarbons, light phenols and heavy phenols. A larger amount of light phenols was detected, especially when 60 wt.% ZrO2-TiO2 was present. Thus, a lower average molecular weight and lower viscosity of bio-oil could be obtained with this catalyst. Pyrolysis was also performed at different pressures of hydrogen. The pressure of H2 has a great effect on the overall yield and the composition of biomass vapors. The peak area percentages of both aromatic hydrocarbons and cyclo-alkanes are enhanced with the increasing of H2 pressure. The overall yields are higher with the addition of either H2 or sulfated catalysts. This is beneficial as phenols are valuable chemicals, thus, increasing the value of bio-oil. The results show that the hydrolysis residue has the potential to become a resource for phenol production.

Characterization of sulfated TiO2 prepared by the sol–gel method and its catalytic activity in the n-hexane isomerization reaction

2005 ◽  
Vol 225 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Lúcia K. Noda ◽  
Rusiene M. de Almeida ◽  
Luiz Fernando D. Probst ◽  
Norberto S. Gonçalves
Keyword(s):  
Catalytic Activity ◽  
Sol Gel ◽  
Isomerization Reaction ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sulfated Tio2

Photocatalytic destruction of gaseous toluene by sulfated TiO2 powder

2005 ◽  
Vol 6 (11) ◽  
pp. 716-720 ◽  
Author(s):  
Akira Nakajima ◽  
Hiromi Obata ◽  
Yoshikazu Kameshima ◽  
Kiyoshi Okada
Keyword(s):  
Tio2 Powder ◽  
Photocatalytic Destruction ◽  
Sulfated Tio2 ◽  
Gaseous Toluene

Production of Levulinic Acid from Cellulose Catalyzed by Environmental-Friendly Catalyst

2010 ◽  
Vol 96 ◽  
pp. 183-187 ◽  
Author(s):  
Pan Wang ◽  
Si Hui Zhan ◽  
Hong Bing Yu
Keyword(s):  
Catalytic Activity ◽  
Levulinic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Impregnation Method ◽  
Acid Yield ◽  
Environmental Friendly ◽  
Sulfated Tio2 ◽  
Catalyst Dosage

Using solid acid catalyst for the levulinic acid (LA) production from cellulose is one of the promising methods for utilization of biomass. An environmentally friendly solid acid catalyst, sulfated TiO2 was prepared by precipitation-impregnation method and used to catalyze the production of levulinic acid from cellulose. The concentration of sulphuric acid had a remarkable influence on the construction and catalytic activity of sulfated TiO2. The influence of reaction temperature and catalyst dosage on levulinic acid yield was also investigated with the aim to obtain the highest yield of LA. The optimum condition for the highest yield of levulinic acid (27.2%) was achieved at 240 °C, 0.7g of sulfated TiO2 and reaction time of 15 min. The recycling test indicated that the catalytic activity of the catalyst had a slight decrease after being used two times.

Correlation between photoreactivity and photophysics of sulfated TiO2 photocatalyst

2005 ◽  
Vol 92 (2-3) ◽  
pp. 470-474 ◽  
Author(s):  
Yue-Hua Xu ◽  
Liang-Yan Wang ◽  
Qi Zhang ◽  
Shao-Jian Zheng ◽  
Xin-Jun Li ◽  
...  
Keyword(s):  
Tio2 Photocatalyst ◽  
Sulfated Tio2

Structural and surface approach to the enhanced photocatalytic activity of sulfated TiO2 photocatalyst

2006 ◽  
Vol 63 (1-2) ◽  
pp. 45-59 ◽  
Author(s):  
G. Colón ◽  
M.C. Hidalgo ◽  
G. Munuera ◽  
I. Ferino ◽  
M.G. Cutrufello ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Photocatalyst ◽  
Surface Approach ◽  
Sulfated Tio2
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