scholarly journals Enhancement of Ni Catalyst Using CeO2–Al2O3 Support Prepared with Magnetic Inducement for ESR

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1357
Author(s):  
Pumiwat Vacharapong ◽  
Sirintra Arayawate ◽  
Sasimas Katanyutanon ◽  
Pisanu Toochinda ◽  
Luckhana Lawtrakul ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Coke Formation ◽  
Coke Production ◽  
H2 Production ◽  
Catalyst Preparation ◽  
Ni Catalyst ◽  
Ni Catalysts ◽  
Al2o3 Support ◽  
Ethanol Steam

The effect of magnetic inducement in support preparation was studied to reduce coke and improve the activity of Ni catalysts for ethanol steam reforming (ESR) at 550–650 °C. Magnetic inducement was introduced to prepare 5 mol % CeO2 in Al2O3 support in order to control the composition and the distribution of Ce in Al2O3. The results show that using CeO2–Al2O3 support with magnetic inducement affects both hydrogen production and coke reduction, where Ni/CeO2–Al2O3 support prepared under magnetic inducement with N–N pole arrangement (Ni/CeO2–Al2O3 (N–N)) exhibited the highest hydrogen production and the lowest coke formation among the catalysts used in this work. Compared with Ni/CeO2–Al2O3 (no magnet), Ni/CeO2–Al2O3 (N–N) catalysts yield 14.0% higher H2 production and 31.7% less coke production. The modified catalyst preparation process used in this study could create catalysts for hydrogen production from ESR which are high in performance and stability but low in preparation cost.

Ethanol Steam Reforming by Ni Catalysts for H2 Production: Evaluation of Gd Effect in CeO2 Support

2022 ◽  
Author(s):  
Gabriella R. Ferreira ◽  
Francisco G. E. Nogueira ◽  
Alessandra F. Lucrédio ◽  
Elisabete M. Assaf
Keyword(s):  
Steam Reforming ◽  
H2 Production ◽  
Ethanol Steam Reforming ◽  
Ni Catalysts ◽  
Ethanol Steam

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.

Co–Ni Catalysts Derived from Hydrotalcite-Like Materials for Hydrogen Production by Ethanol Steam Reforming

2009 ◽  
Vol 52 (3) ◽  
pp. 206-217 ◽  
Author(s):  
Li He ◽  
Helene Berntsen ◽  
Esther Ochoa-Fernández ◽  
John C. Walmsley ◽  
Edd A. Blekkan ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Ni Catalysts ◽  
Ethanol Steam

Hydrogen Production Via Ethanol Steam Reforming Over Ni/Al2O3 Catalysts: Effect of Ni Loading

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Ahmed Bshish ◽  
Zahira Yaakob ◽  
Ali Ebshish ◽  
Fatah H. Alhasan
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
High Surface ◽  
Pt Catalyst ◽  
Ni Catalyst ◽  
Ethanol Steam Reforming ◽  
Pure Ethanol ◽  
Catalytic Systems ◽  
X Ray ◽  
Ethanol Steam

Catalytic systems play an important role in hydrogen production via ethanol reforming. The effect of Ni loading on the characteristics and activities of Ni/Al2O3 catalysts used in pure ethanol steam reforming are not well-understood. Two series of catalysts with various Ni loadings (6, 8, 10, 12, and 20 wt. %) were prepared by impregnation (IMP) and precipitation (PT) methods and were tested in reforming reactions. The catalysts were characterized by Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), temperature-programmed reduction (TPR), and scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM–EDAX). Powder XRD patterns of all the catalysts exhibited only NiO. Lower Ni loading catalysts were more efficient in H2 production, as evidenced by the finding that a 6 wt. % Ni catalyst, synthesized via the PT method, yielded 3.68 mol H2 per mol ethanol fed. The high surface area and small crystallite size of the low Ni loading catalysts resulted in sufficient dispersion and strong metal-support interactions, which closely related to the high activity of the 6 PT catalyst.

Embedded Ni catalysts in Ni-O-Ce solid solution for stable hydrogen production from ethanol steam reforming reaction

2019 ◽  
Vol 193 ◽  
pp. 94-101 ◽  
Author(s):  
Fagen Wang ◽  
Linjia Zhang ◽  
Jianquan Deng ◽  
Jianming Zhang ◽  
Bolin Han ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Ni Catalysts ◽  
Ethanol Steam

CeO2-supported Pt/Ni catalyst for the renewable and clean H2 production via ethanol steam reforming

2014 ◽  
Vol 145 ◽  
pp. 73-84 ◽  
Author(s):  
Vincenzo Palma ◽  
Filomena Castaldo ◽  
Paolo Ciambelli ◽  
Gaetano Iaquaniello
Keyword(s):  
Steam Reforming ◽  
H2 Production ◽  
Ni Catalyst ◽  
Ethanol Steam Reforming ◽  
Ethanol Steam
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