Enhanced photocatalytic water splitting hydrogen production on RuO2/La:NaTaO3 prepared by sol–gel method

2010 ◽  
Vol 12 (4) ◽  
pp. 268-272 ◽  
Author(s):  
L.M. Torres-Martínez ◽  
R. Gómez ◽  
O. Vázquez-Cuchillo ◽  
I. Juárez-Ramírez ◽  
A. Cruz-López ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Sol Gel ◽  
Gel Method ◽  
Photocatalytic Water Splitting ◽  
Sol Gel Method

scholarly journals Novel N-doped ZrO2 with enhanced visible-light photocatalytic activity for hydrogen production and degradation of organic dyes

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 6752-6758 ◽  
Author(s):  
Yuanyang Wang ◽  
Yinghua Zhang ◽  
Haiqiang Lu ◽  
Yanxin Chen ◽  
Zhenmin Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Nitrogen Source ◽  
Organic Dyes ◽  
Low Cost ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Visible Light Photocatalytic

Two new types of N-doped ZrO2 photocatalysts ZON and AZON have been synthesized using ethylenediamine as the nitrogen source by a facile and low-cost sol–gel method.

Efficient hydrogen production from glycerol photoreforming over Ag2O TiO2 synthesized by a sol–gel method

2017 ◽  
Vol 42 (27) ◽  
pp. 17063-17074 ◽  
Author(s):  
Chao Wang ◽  
Xiaoyan Cai ◽  
Ying Chen ◽  
Zhengdong Cheng ◽  
Xianglong Luo ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Hydrogen Production via Glycerol Reforming over Pt/SiO2 Nanocatalyst in a Spiral-Shaped Microchannel Reactor

2016 ◽  
Vol 14 (5) ◽  
pp. 1059-1068 ◽  
Author(s):  
Azita Ebrahimi Touri ◽  
Majid Taghizadeh
Keyword(s):  
Hydrogen Production ◽  
Sol Gel ◽  
Hydrogen Yield ◽  
Microchannel Reactor ◽  
Glycerol Conversion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Gaseous Products ◽  
Xrd Techniques ◽  
Plate Type

Abstract Platinum supported silica nanocatalyst was synthesized for hydrogen production by steam reforming of glycerol (SRG). The catalyst was prepared by the sol-gel method and characterized using BET, SEM, and XRD techniques. The performance of the catalyst was evaluated in terms of glycerol conversion, hydrogen yield and exit gas selectivity in reaction temperature range 300–400 °C in a plate-type microchannel reactor at atmospheric pressure. According to the experimental results, Pt/SiO2 nanocatalyst was successfully synthesized by sol-gel method. The optimum conditions were obtained with inlet feed flow rate of 3 mL/h and temperature of 400 °C, leading to a low CO selectivity and high H2 yield. The results showed that the Pt nanocatalyst supported on SiO2 had a good performance on the gaseous products and yield of H2.

SOL-GEL SYNTHESIS AND CHARACTERIZATION OF COPPER STABILIZED ZIRCONIA NANOPARTICLES

2011 ◽  
Vol 25 (21) ◽  
pp. 2823-2839 ◽  
Author(s):  
Y. VAHIDSHAD ◽  
H. ABDIZADEH ◽  
H. R. BAHARVANDI ◽  
M. AKBARI BASERI
Keyword(s):  
Particle Size ◽  
Hydrogen Production ◽  
Calcination Temperature ◽  
Aging Temperature ◽  
Sol Gel ◽  
Chelating Agent ◽  
Molar Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sol Gel Synthesis

A sol-gel method is investigated to synthesize CuO – ZrO 2 nanoparticles as catalyst for hydrogen production from methanol. Finer precursor nanoparticles give rise to larger specific areas in catalyst which result in a high hydrogen production. The effects of some critical process parameters on the sol-gel synthesis of CuO – ZrO 2 nanoparticles are studied. These parameters are affected on synthesis of CuO – ZrO 2 when it is prepared with sol-gel method. Particle size and distribution are considered as the results. The parameters including the effect of calcination temperature, aging temperature, nature and concentration of catalyst (acidic or basic conditions), H 2 O /precursor molar ratio, and chelating agent that have been identified as most important, are focused. It is found that the calcination temperature strongly influenced the morphology and interaction between the active species and support, and hence the structure and catalytic performance. Nature and concentration of catalyst ( pH value), chelating agent, ( H 2 O /precursor) molar ratio and also aging temperature have influence on the nanoparticles. Thus, by controlling these factors, it is possible to vary the morphology and properties of the sol-gel-derived inorganic network over wide ranges. Morphology, particle size and distribution, phase evaluation, structure, and chemical analysis of the products are investigated by SEM, TEM, DTA/TG, XRD and EDX respectively.

Steam Reforming of Glycerol for Hydrogen Production over Ni Catalysts Supported by CeO2-Al2O3 Xerogel

2015 ◽  
Vol 1101 ◽  
pp. 318-321 ◽  
Author(s):  
Krongthong Kamonsuangkasem ◽  
Supaporn Therdthianwong ◽  
Apichai Therdthianwong
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
High Surface ◽  
Sol Gel ◽  
Ni Catalyst ◽  
Ni Catalysts ◽  
Commercial Alumina ◽  
Gel Method ◽  
Sol Gel Method ◽  
Catalytic Stability

The Ni catalysts supported by CeO2-Al2O3xerogel were prepared by sol-gel method. The effect of hydrolysis ratio (R at 16.5 and 165) on CeO2-Al2O3textural properties and phase formation were investigated. The results revealed that the porous texture and the Ni crystalline phase can be controlled by adjusting the hydrolysis ratio. A high surface area and small Ni crystallite size were obtained by using the hydrolysis ratio of 16.5. For hydrogen production via glycerol steam reforming, the Ni catalyst supported on CeO2-Al2O3xerogel showed a better catalytic performance than that supported on commercial alumina. The promoted Ni catalyst supported on commercial alumina suddenly deactivated after first 12 h, whereas that on Al2O3xerogel performed the catalytic stability more than 20 h. This demonstrated that the catalyst prepared by sol-gel method is an interesting catalyst for using in the glycerol steam reforming because of the catalytic stability enhancement.

Hydrogen production by auto-thermal reforming of ethanol over Ni catalyst supported on ZrO2 prepared by a sol–gel method: Effect of H2O/P123 mass ratio in the preparation of ZrO2

2009 ◽  
Vol 146 (1-2) ◽  
pp. 57-62 ◽  
Author(s):  
Min Hye Youn ◽  
Jeong Gil Seo ◽  
Ji Chul Jung ◽  
Sunyoung Park ◽  
Dong Ryul Park ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Sol Gel ◽  
Ni Catalyst ◽  
Mass Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Method Effect
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