نتایج جستجو برای: wet impregnation

تعداد نتایج: 38345  

Journal: :Catalysts 2021

The oxy-steam reforming of liquefied natural gas reaction (OSR-LNG) is promising process for syngas generation. In this paper, the catalytic properties NiO/La2O3 systems prepared by wet impregnation and co-precipitation methods were extensively investigated in OSR-LNG reaction. physicochemical studied materials determined using various techniques including Temperature programmed reduction (TPR-...

Journal: :Crystals 2023

The number and the strength of acid sites in catalysts have paramount importance on their efficiency. In zeolites chemistry, increased content framework Al gives a higher strong sites. Their can be disadvantage catalytic reactions (e.g., methanol to olefins conversion) due undesired secondary coke formation. Here, Faujasite type zeolite with has been used for investigating role defects structur...

Journal: :The Lancet 1864

2010
Chang-Mao Hung Wei-Bang Lin

In this study, aqueous solutions of 600 mg L of ammonia were oxidized in a trickle-bed reactor using Cu-activated carbon fiber (ACF) catalysts, which were prepared by incipient wet impregnation with aqueous solutions of copper nitrate that was deposited on ACF substrates. Experimental results showed that the total conversion efficiency of ammonia was 93% during wet oxidation over the catalyst a...

2011
Urszula Tylewicz Santina Romani Pietro Rocculi Susanne Widell Marco Dalla Rosa

Vacuum Impregnation in food industry is an interesting process particularly in semy-dry fruit processing. At the beginning of the process the pressure is reduced and the internal gas in the product pores is expanded and partially flows out, after that, when atmospheric pressure is restored and residual gas is compressed, the external liquid flows into the pores. Although vacuum impregnation pro...

A. A. Hosseini F. Doustan M. Akbarzadeh Pasha,

Monometallic and bimetallic Ni and Co catalytic nanoparticles supported on Titanium dioxide (rutile phase) substrate were prepared by wet impregnation method. These nanoparicles were used as catalysts for synthesis of multiwalled carbon nanotubes (MWCNTs) from acetylene decomposition at 700°C by the catalytic chemical vapor deposition (CCVD) technique. The nanomaterials (catalyst and CNTs) were...

The catalytic oxidation of toluene over copper oxide supported on natural diatomite was investigated. The catalyst was prepared by the wet impregnation method and characterized by using the Brunauer Emmett Teller (BET), field emission Scanning Electron Microscopy (FESEM), X-ray diffraction (XRD), X-ray fluorescence (XRF) and Temperature-programmed reduction (TPR) analysis. The highest catalytic ...

Journal: :Reaction Kinetics, Mechanisms and Catalysis 2022

Abstract Amberlyst-15 supported cyclic alkyl amino carbene and bicyclic ruthenium olefin metathesis catalysts for sustainable catalytic applications have been synthesized by the well-known wet impregnation method utilizing ionic complex/support interaction. Surface coverages are as high 4 7 wt% were achieved in case of significantly higher pore volume Amberlyst-15, compared to Amberlyst-36. The...

2003
I. D. Wilson

The use of impregnated phases in thin-layer chromatography (TLC) has a long history, beginning in the very earliest days of the technique. As a consequence, much of the key literature in this Reld dates back to the 1960s and 1970s. The literature also contains a considerable number of examples of impregnation reagents where subsequently the methods have received little attention except in revie...

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