نتایج جستجو برای: ni/ zeolite catalyst

تعداد نتایج: 101895  

2015
Thamer Adnan Abdullah

Due to crude oil is limited, new resources for fuel and petrochemicals are important to be developed. Biogas or NG (Natural Gas) can be easily converted into methanol which can be reacted over zeolite to produce olefins and gasoline. HZSM-5 zeolite catalyst has been used in this study and its modification by (0.5wt%, 1wt%, 2wt% and 4wt %) Ni to convert methanol to hydrocarbons (MTH). Catalysts ...

2013
Javier Ruiz-Martínez Andrew M Beale Upakul Deka Mathew G O'Brien Paul D Quinn J Fred W Mosselmans Bert M Weckhuysen

Fluid catalytic cracking (FCC) is the main conversion process used in oil refineries. An X-ray microscopy method is used to show that metal poisoning and related structural changes in the zeolite active material lead to a non-uniform core–shell deactivation of FCC catalyst particles. The study links the detrimental effect of V and Ni poisoning with zeolite destruction and dealumination in a spa...

Journal: :iranian journal of hydrogen & fuel cell 2015
nahid khandan mahmoud ziarati reza karkeabadi mohammad ali ghafouri roozbahani

steam reforming is one of the most important processes for producing hydrogen from hydrocarbon fuels such as lpg and has attracted much attention due to its high efficiency and economy. in this study, the lpg steam reforming reaction was investigated on nickel catalysts supported on four various zeolites (h-y, na-y, hzsm5 and ferrierite). the catalytic tests were performed in a tubular fixed be...

2014
A. O. Kedia H. A. Zaidi

As stock of crude oil is limited, new resources for fuel and petrochemicals are required to be developed. Natural gas or biogas can be easily converted into methanol which can be converted into gasoline and olefins. This study uses zeolite catalyst (ZSM-5) and its modification by Ni to convert methanol to hydrocarbons (MTH). Catalysts are studied at different temperatures and at different loadi...

In this study, beta nanozeolite, ultra-stable Y zeolite (USY) and amorphous silica-alumina (ASA) were synthesized. These compounds were used as the support of hydrocracking catalyst. Ni-Mo/beta zeolite-ASA and Ni-Mo/USY zeolite-ASA catalysts were prepared by the impregnation method. The samples were characterized with X-Ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM)...

2012
Alireza Nezamzadeh-Ejhieh Mahshid Khorsandi

A comparison of the photoefficiency of Ni(II) and NiS incorporated into zeolite P towards photodecolorization of Eriochrome Black T dye solution was investigated in a photocatalytic reactor using UV lamp as a light source. The effect of various experimental variables on the decolorization performance of the process was evaluated by examining catalyst dosage, temperature, initial dye concentrati...

2016
A. Clozza J. Garcia A. Bianconi A. Corma A. CLOZZA

The local structure around the Ni atom has been studied by EXAFS and XANES spectroscopy in NiO-Moo3 Zeolite supported catalyst. Coordination, geometry and degree of dispersion of the NiO component has been determined for different concentrations of the active component.

Journal: :iranian journal of catalysis 2011
alireza nezamzadeh-ejhieh mahshid khorsandi

a comparison of the photoefficiency of ni(ii) and nis incorporated into zeolite p towards photodecolorization of eriochrome black t dye solution was investigated in a photocatalytic reactor using uv lamp as a light source. the effect of various experimental variables on the decolorization performance of the process was evaluated by examining catalyst dosage, temperature, initial dye concentrati...

Journal: :Materials advances 2021

A Ni-based ternary nanocomposite, Ni–rGO–zeolite, has been developed as an efficient and recyclable heterogeneous catalyst for on-water regioselective azide alkyne cycloaddition.

Journal: : 2021

Modifying of HY/Zeolite is by loading nickel for applying catalyst in thermal catalytic cracking furfural extract-40 from the lubricating base oil unit. The study involved characterizing HY-zeolite and promoted with X-ray diffraction analysis, Scanning electron microscopy (SEM), BET (Brunauer, Emmett, Teller), infrared ray analyses FTIR. tubular reactor a fixed bed two type catalysts; HY/zeolit...

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