نتایج جستجو برای: methane reforming

تعداد نتایج: 31587  

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی شیمی 1384

فرآیند شکل دهی کاتالیستهای هتروژن از اهیمت زیادی در مراحل ساخت کاتالیست برخوردار می باشد. کاتالیست پرووسکایت لانتانیوم-نیکل با استفاده از روش سل-ژل تهیه وتحت عمل شکل دهی قرار گرفت کهدارای شکل استوانه با چهار سوراخ و سر ته گنبدی بود. تاثیر پاراترهای مختلف در فرایند شکل دهی از جمله نوع و شکل قالب نوع پیوند دهنده و مقدار آن فشار اعمالی عملیات حرارتی بعد از شکل دهی اولیه کاتالیست ونوع مواد اولیه تش...

2015
Brian A. Rosen Eliezer Gileadi Noam Eliaz

Article history: Received 11 October 2015 Received in revised form 2 December 2015 Accepted 15 December 2015 Available online 17 December 2015 The dry reforming of methane (DRM) utilizes carbon dioxide (CO2) as the oxidizing agent in order to produce synthesis gas. Catalyst deactivation via coking, oxidation, and sintering has stymied the industrialization of catalysts for the DRM. Here, we uti...

2016
Kresimir Anic Astrid Wolfbeisser Hao Li Christoph Rameshan Karin Föttinger Johannes Bernardi Günther Rupprechter

Ni nanoparticles supported on ZrO2 are a prototypical system for reforming catalysis converting methane to synthesis gas. Herein, we examine this catalyst on a fundamental level using a 2-fold approach employing industrial-grade catalysts as well as surface science based model catalysts. In both cases we examine the atomic (HRTEM/XRD/LEED) and electronic (XPS) structure, as well as the adsorpti...

2008
F. Gallucci J. A. M. Kuipers

Two fluidized bed membrane reactor concepts for hydrogen production via autothermal reforming of methane with integrated CO2 capture are proposed. Ultrapure hydrogen is obtained via hydrogen perm-selective Pd-based membranes, while the required reaction energy is supplied by oxidizing part of the CH4 in situ in the methane combustion configuration or by combusting part of the permeated H2 in th...

Journal: :Molecules 2016
Adolfo Iulianelli Marjan Alavi Giuseppe Bagnato Simona Liguori Jennifer Wilcox Mohammad Reza Rahimpour Reza Eslamlouyan Bryce Anzelmo Angelo Basile

A supported Pd-Au (Au 7wt%) membrane was produced by electroless plating deposition. Permeation tests were performed with pure gas (H₂, H₂, N₂, CO₂, CH₄) for long time operation. After around 400 h under testing, the composite Pd-Au membrane achieved steady state condition, with an H₂/N₂ ideal selectivity of around 500 at 420 °C and 50 kPa as transmembrane pressure, remaining stable up to 1100 ...

2010
María Ortiz Pilar Gayán Luis F. de Diego Francisco García-Labiano Alberto Abad Miguel A. Pans Juan Adánez Miguel Luesma Castán

In this work it is analyzed the performance of an iron waste material as oxygen carrier for a chemical-looping combustion (CLC) system. CLC is a novel combustion technology with the benefit of inherent CO2 separation that can be used as a source of energy for the methane steam reforming process (SR). The tail gas from the PSA unit is used as fuel in the CLC system. The oxygen carrier behaviour ...

Journal: :Sustainable Energy and Fuels 2023

Solar-driven methane dry reforming via a ceria-based thermochemical redox cycle in concentrating solar tower to produce syngas with solar-to-fuel energy efficiency of 27%.

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