Hydrothermal gasification of phenol water on novel carbon-supported Ni catalysts prepared by the sol–gel method using tartaric acid and alminum tri-sec-butoxide

Superfine nanometer SrTiO3 with size of near 50-60nm was prepared by citrate process and sol-gel method. XRD and TEM characterizations indicate that sol-gel method is appropriate to prepare high-purity powders at far lower temperature than other methods. The Ni-based catalysts were prepared by using SrTiO3 powder as support through impregnation and sol-gel method. These catalysts were applied to the reaction of CO2 reforming CH4 to synas and showed high activity. The catalytic activity of Ni-based catalyst is investigated by reaction temperature, the method of support preparation, and the method of catalyst preparation; It shows that the catalyst possesses higher catalytic activity with the increasing of temperature; and the catalytic rate is near 90% at 973 K; and the catalyst show higher catalytic activity when support is prepared by sol-gel method than by citrate process; and the catalyst shows better catalytic activity when catalyst is prepared by sol-gel method than by impregnation method.

Download Full-text

Preparation and characterization of porous silica spheres by the sol–gel method in the presence of tartaric acid

Journal of Materials Chemistry ◽

10.1039/a607333f ◽

1997 ◽

Vol 7 (5) ◽

pp. 767-771 ◽

Cited By ~ 34

Author(s):

Hiroyuki Izutsu ◽

Fujio Mizukami ◽

Padamakumar K. Nair ◽

Yoshimichi Kiyozumi ◽

Kazuyuki Maeda

Keyword(s):

Tartaric Acid ◽

Sol Gel ◽

Porous Silica ◽

Silica Spheres ◽

Gel Method ◽

Sol Gel Method

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1101.318 ◽

2015 ◽

Vol 1101 ◽

pp. 318-321 ◽

Cited By ~ 1

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.

Download Full-text