نتایج جستجو برای: catalyst bed

تعداد نتایج: 92393  

Journal: : 2021

Steam Methane Reforming (SMR) is the main method to obtain synthesis gas inproduction of alcohol, ammonia, acids Fischer-Tropsch and other organic products.The study has investigated reaction SMR it mechanism, explained aerosolnanocatalysis (AnC) vibrated bed as alternative technology instead using heterogeneouscatalyst in bed. The research proven that NiO best catalyst could be used thereactio...

Journal: : 2023

Trickle bed reactor was used to study the hydrogenation of nitrobenzene over Ni/SiO2 catalyst. The catalyst prepared using Highly Dispersed Catalyst (HDC) technique. Porous silica particles (capped cylinders, 6x5.5 mm) were as support. characterized by TPR, BET surface area and pore volume, X-ray diffraction, Raman Spectra. trickle packed with diluted fine glass beads in order decrease external...

2002
Halim H. Redhwi Syed A. Ali Shakeel Ahmed

This paper present some results obtained from the research program being pursued at the Research Institute of King Fahd University of Petroleum and Minerals aimed at the development of suitable catalysts for hydrocracking of the vacuum gas oils from Arabian Light crude to obtain higher quality distillate products. The newly developed high-performance hydroprocessing catalysts are based on synth...

Journal: :Chemie Ingenieur Technik 2023

A feasibility study of a conventional fixed-bed reactor and packed-bed membrane (PBMR) in distributor configuration is carried out for the selective oxidation methanol to oxygenates dimethoxymethane methyl formate on VOx/TiO2 catalyst. Kinetic experiments provided reaction network reliable kinetic model six main reactions involved. The PBMR offers significant advantages potential formation both...

Journal: :Processes 2022

Residue catalytic hydrogenation was carried out in a two-stage downflow fixed-bed reactor system, with HDM catalyst the first stage and HDS second one, to mimic industrial operation. The experiments were run at five sets of temperatures (395 °C (first reactor)/405 (second reactor), 400 °C/410 °C, 405 °C/415 410 °C/420 420 °C/430 °C). It found that initial deactivation mainly caused by rapid dep...

2017
Justinus A. Satrio Brent H. Shanks Thomas D. Wheelock

A combined catalyst and sorbent was prepared and utilized for steam reforming methane and propane in laboratory-scale systems. The material was prepared in the form of small spherical pellets having a layered structure such that each pellet consisted of a highly reactive lime or dolime core enclosed within a porous but strong protective shell made of alumina in which a nickel catalyst was loade...

Journal: :Industrial & Engineering Chemistry Research 2022

The need to replace fossil fuels with sustainable alternatives has been a critical issue in recent years. Hydrogen fuel is promising alternative because of its wide availability and high energy density. For the very first time, novel microreactor configurations for formic acid decomposition have studied using computational modeling methodologies. commercial 5 wt % Pd/C catalyst, under mild cond...

2005

Abstract--The selective oxidation of ethene over a silver on cx-alumina catalyst was studied in a pilot plant with a wall-cooled tubular packed bed reactor. Gas and solid temperatures in the catalyst bed were measured at different axial and radial positions as well as concentrations at different axial position. Total pressure, inlet mole fraction ethene, mass flow rate and wall temperature were...

2006
Will Meredith Colin E. Snape Gordon D. Love

This study describes the reduction of functionalised model compounds to their corresponding hydrocarbons by catalytic hydropyrolysis to provide information on the release of biomarkers fromkerogens and asphaltenes covalently bound through the functional groups investigated. Five model compounds were investigated, the n-C18 carboxylic acids, stearic and oleic acids; the C24 steroidal acid, 5b-ch...

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