Tuning Pyrolysis Temperature to Improve the In-Line Steam Reforming Catalyst Activity and Stability

2021 ◽  
Author(s):  
Enara Fernandez ◽  
Maria Cortazar ◽  
Laura Santamaria ◽  
Maite Artetxe ◽  
Maider Amutio ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Pyrolysis Temperature ◽  
Catalyst Activity ◽  
Reforming Catalyst

scholarly journals Glycerol Hydrogenolysis with In Situ Hydrogen Produced via Methanol Steam Reforming: The Promoting Effect of Pd on a Cu/ZnO/Al2O3 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 110
Author(s):  
Yuanqing Liu ◽  
Chau T. Q. Mai ◽  
Flora T. T. Ng
Keyword(s):  
Steam Reforming ◽  
Catalyst Activity ◽  
Promoting Effect ◽  
Glycerol Conversion ◽  
Glycerol Hydrogenolysis ◽  
Glycerol Dehydration ◽  
Effect Of Pd ◽  
Al2o3 Catalyst ◽  
Reaction Equilibrium

The glycerol hydrogenolysis to produce 1,2-propanediol without using externally supplied hydrogen was investigated using methanol present in crude glycerol to provide in situ hydrogen via its steam reforming reaction. This paper focuses on the promoting effect of Pd on the reactivity of a Cu/Zn/Al2O3 catalyst. Adding 2 wt% Pd onto a Cu/ZnO/Al2O3 catalyst significantly improved the selectivity to 1,2-propanediol from 63.0% to 82.4% and the glycerol conversion from 70.2% to 99.4%. This enhancement on the catalytic activity by Pd is mainly due to the improved hydrogenation of acetol, which is the intermediate formed during the glycerol dehydration. The rapid hydrogenation of acetol can shift the reaction equilibrium of glycerol dehydration forward resulting in a higher glycerol conversion. The improved reducibility of the catalyst by Pd allows the catalyst to be reduced in situ during the reaction preventing any loss of catalyst activity due to any potential oxidation of the catalyst. The catalyst was slightly deactivated when it was firstly recycled resulting in a 5.4% loss of glycerol conversion due to the aggregation of Cu and the deactivation became less noticeable upon further recycling.

A NEW NAPHTHA STEAM REFORMING CATALYST CONTAINING NICKEL AND RARE EARTH OXIDE

1985 ◽  
pp. 672-674
Author(s):  
Wu Xingya ◽  
Liao Qiaoli ◽  
Liang Zhencheng ◽  
Ding Yaodong ◽  
Qin Yongning ◽  
...  
Keyword(s):  
Rare Earth ◽  
Steam Reforming ◽  
Rare Earth Oxide ◽  
Reforming Catalyst

Technological Aspects of Ethanol Steam Reforming Processors for Molten Carbonate Fuel Cells

2006 ◽  
Author(s):  
S. Freni ◽  
F. Frusteri ◽  
N. Mondello ◽  
V. Chiodo ◽  
S. Siracusano ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Supported Catalysts ◽  
Catalyst Activity ◽  
Supported Catalyst ◽  
Molten Carbonate Fuel Cell ◽  
Water Mixture ◽  
Molten Carbonate ◽  
Carbon Formation ◽  
Molten Carbonate Fuel Cells ◽  
Catalytic Behaviour

Bioethanol, obtained by biomass fermentation, could be an important hydrogen supplier as a renewable source. The availability of active, selective and stable catalyst for bioethanol steam reforming is a key point for the development of processes suitable to this purpose. In this work, the performance of different supported catalysts in the steam reforming of bioethanol at molten carbonate fuel cell (MCFC) operative condition has been focused and a decreasing activity has been related to the formation of carbon. Furthermore catalytic behaviour of a Ni supported catalyst has been tested under reforming condition both distillation industry’s waste and ethanol-water mixture. Results revealed that, superior alcohols (fusel oil) arising from the distillation process influence carbon formation and the presence of oxygen (ATR condition) preserves the catalyst activity which otherwise significantly deactivate mainly due to the carbon formation.

Magnesium Oxide-loaded Nickel on Al2O3 as a Steam Reforming Catalyst

2007 ◽  
pp. 575-576
Author(s):  
Makoto Harada ◽  
Takasi Tatsumi ◽  
Michikazu Hara ◽  
Junko N. Kondo ◽  
Kazunari Domen
Keyword(s):  
Magnesium Oxide ◽  
Steam Reforming ◽  
Reforming Catalyst

scholarly journals Effect of the surface state on the catalytic performance of a Co/CeO2 ethanol steam-reforming catalyst

2016 ◽  
Vol 340 ◽  
pp. 321-330 ◽  
Author(s):  
Sylwia Turczyniak ◽  
Detre Teschner ◽  
Andrzej Machocki ◽  
Spyridon Zafeiratos
Keyword(s):  
Steam Reforming ◽  
Surface State ◽  
Catalytic Performance ◽  
Ethanol Steam Reforming ◽  
Reforming Catalyst ◽  
Ethanol Steam
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