نتایج جستجو برای: نانوکاتالیست ni cual2o3 zro2

تعداد نتایج: 55828  

Journal: :Energies 2021

Development of a transition metal based catalyst aiming at concomitant high activity and stability attributed to distinguished catalytic characteristics is considered as the bottleneck for dry reforming methane (DRM). This work highlights role modifying zirconia (ZrO2) alumina (Al2O3) supported nickel catalysts using lanthanum oxide (La2O3) varying from 0 20 wt% during methane. The mesoporous w...

Journal: :Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2009
James R Wilson Marcio Gameiro Konstantin Mischaikow William Kalies Peter W Voorhees Scott A Barnett

A method is described for quantitatively analyzing the level of interconnectivity of solid-oxide fuel cell electrode phases. The method was applied to the three-dimensional microstructure of a Ni-Y2O3-stabilized ZrO2 (Ni-YSZ) anode active layer measured by focused ion beam scanning electron microscopy. Each individual contiguous network of Ni, YSZ, and porosity was identified and labeled accord...

2017
María S. Leguizamón Aparicio Marco A. Ocsachoque Delia Gazzoli Irma L. Botto Ileana D. Lick

ZrO2·nH2O (hydrogel) impregnated with transition metals (Cu, Co, and Ni) was studied in this work as a precursor for the synthesis of CuO/ZrO2 (CuZ), CoOx/ZrO2 (CoZ), and NiO/ZrO2 (NiZ) catalysts, employed in the naphthalene oxidation reaction. Fresh and catalytically used materials were characterized by different physicochemical techniques, to compare the bulk and surface behavior, with partic...

Journal: :Chemical Engineering Science 2021

Zirconia was used to support Ru, Ni, and Ru-Ni bimetallic nanoparticles for CO2 methanation. The formation of an alloy detected in Ru K-edge spectra. Ru/ZrO2 exhibited the highest reaction rate (1.35 mol/molmetal.s) with a CH4 selectivity 97.3%. diffuse reflectance infrared fourier transform spectroscopy experiments suggest that formates serve as intermediates converting CO via reverse water–ga...

ژورنال: پژوهش نفت 2017

  کاتالیست‌های نیکلی کارآیی خوبی در فرآیند هیدروژن‌گیری اکسایشی اتان و تولید اتیلن از خود نشان داده‌اند. منیزیم اکسید و زیرکونیم اکسید به‌ترتیب جهت تامین خاصیت بازی و اسیدی کاتالیست مورد نیاز مورد استفاده قرار گرفتند. به این منظور، نانوکاتالیست Ni/Z25M75 سنتز شد و جهت استفاده در تبدیل اتان به اتیلن در حضور دی‌اکسیدکربن و اکسیژن مورد ارزیابی قرار گرفت. به منظور مقایسه دو روش سل-ژل و تلقیح و تاث...

Journal: :Catalysts 2023

To identify the synergistic action of differently prepared Ni-ZrO2 phase boundaries in methane dry reforming, we compared an “inverse” near-surface intermetallic NiZr catalyst precursor with respective bulk-intermetallic NixZry material and a supported catalyst. In all three cases, stable high reforming activity enhanced anticoking properties can be assigned to presence extended boundaries, whi...

Journal: :Chemcatchem 2023

The Cover Feature depicts the possible Ni locations on MgAlOx/ZrO2 support and highlights superior DRM reaction performance of at heterointerfacial sites. catalytic behaviors across these diverse positions are metaphorically represented by thrust rockets brightness particles. In their Research Article, M. Montemore, O. Gazit co-worker demonstrate that heterointerface between a thin MgAlOx overl...

Journal: :Separation and Purification Technology 2022

Integrated CO2 capture and utilisation (ICCU) is a promising strategy for restricting carbon emissions achieving neutrality. Bifunctional combined materials (BCMs), containing adsorbents active catalysts, are widely applied in this process. Producing syngas via reverse water–gas shift reaction (RWGS) integrating with Fischer-Tropsch (F-T) synthesis an attractive valuable route. This work invest...

Journal: :Crystals 2023

The utilization of heterogeneous catalysts during the production biodiesel potentially minimize cost processing due to exclusion separation step. (X wt%)Ni–ZrO2 (where X = 10, 25 and 50) prepared through a hydrothermal process were tested for by transesterification waste cooking oil (WCO) with methanol. influences various reaction parameters systematically optimized. While physicochemical chara...

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