نتایج جستجو برای: reforming reaction

تعداد نتایج: 418205  

2009
H. Lorenz S. Penner W. Jochum C. Rameshan B. Klötzer

Structure, morphology and composition of two Pd/Ga2O3 methanol steam reforming catalysts were correlated with the associated activity and selectivity changes in the methanol steam reforming reaction and linked to studies on pure Ga2O3 supports. For both systems, that are, a Pd/Ga2O3 thin film model catalyst and a powder-supported Pd catalyst, we identified a temperature range in which the reduc...

In this study we developed LaNixAl1-xO3 perovskite systems using a sol-gelmethod (with propionic acid as solvent) to use in methane-reforming reactions for producing synthesis gas. To understand the roles of the nature of the precursor and calcination conditions on the formation of LaNixAl1-xO3, we carried out identifications using NMR, FT-IR, XRD, SEM, and TEM. The precursor struc...

2008
Matthew P. Hyman John M. Vohs

Introduction The steam reforming of alcohols, particularly methanol and ethanol, presents a promising method of producing hydrogen. Due to its high activity at relatively low temperatures, Pd/ZnO has received attention as a methanol steam reforming (MSR) catalyst to produce H2 at very high CO2 selectivity. 1 Pd supported on most other materials dehydrogenates methanol to CO. Similarly, Co catal...

Journal: :Environmental science & technology 2014
Chunfei Wu Mohamad A Nahil Norbert Miskolczi Jun Huang Paul T Williams

Producing both hydrogen and high-value carbon nanotubes (CNTs) derived from waste plastics is reported here using a pyrolysis-reforming technology comprising a two-stage reaction system, in the presence of steam and a Ni-Mn-Al catalyst. The waste plastics consisted of plastics from a motor oil container (MOC), commercial waste high density polyethylene (HDPE) and regranulated HDPE waste contain...

Journal: :Isij International 2021

Direct Reduction processes use gases (CO and H2) for iron reduction production of sponge or direct reduced (DRI). The generation this gas occurs through methane reforming, which can be done in a reformer inside the shaft with as catalyst. latter auto-reforming processes. kinetics steam reforming catalyzed by was studied at temperatures between 875°C 1050°C. Results showed that acts catalyst con...

Journal: :Physical chemistry chemical physics : PCCP 2012
Shuirong Li Chengxi Zhang Peng Zhang Gaowei Wu Xinbin Ma Jinlong Gong

This paper describes a strategy for producing hydrogen via steam reforming of ethylene glycol over supported nickel catalysts. Nickel plays a crucial role in conversion of ethylene glycol and production of hydrogen, while oxide supports affect product distribution of carbonaceous species. A plausible reaction pathway is proposed based on our results and the literature.

Journal: :Physical chemistry chemical physics : PCCP 2012
Chengxi Zhang Peng Zhang Shuirong Li Gaowei Wu Xinbin Ma Jinlong Gong

This paper describes the utilization of skeletal Ni-based catalysts for steam reforming of ethanol to produce CO-free hydrogen, which could be superior in the application of fuel cells. Assistant metals play different roles in the reaction; Pt and Cu suppress the methanation and enhance H(2) production, while Co promotes the methanation.

Journal: :Chemical communications 2013
Xianjun Du Dengsong Zhang Ruihua Gao Lei Huang Liyi Shi Jianping Zhang

The modular catalysts were fabricated via the combination of the Ni-MgO-Al2O3 mixed oxide nanoplates and the mesoporous SiO2 coating. Due to the dual confinements, the catalysts show high catalytic activity with enhanced coke- and sintering-resistance in the dry reforming of methane reaction.

Journal: :Fuels 2021

Biogas, consisting of CH4 and CO2, is a promising energy source can be converted into H2 by dry reforming reaction. In this study, membrane reactor adopted to promote the performance biogas reforming. The aim study investigate effect pressure sweep gas on get H2. molar ratio supplied CH4:CO2 reaction temperature also investigated. It observed that impact psweep concentrations CO2 small irrespec...

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