نتایج جستجو برای: ghsv

تعداد نتایج: 137  

2012
Hanif A. Choudhury Vijayanand S. Moholkar

Fischer-Tropsch synthesis with a commercial cobalt catalyst (Albemarle) has been carried out under various combinations of two process parameters, viz. reaction pressure and GHSV (gas hourly space velocity) using synthesis gas with molar ratio of H2/CO = 2. The optimum set of reaction parameters that yielded hydrocarbon product in the desired carbon number range of C10-C14 and chain growth prob...

Journal: :Journal of Automated Methods and Management in Chemistry 2008
Satu Ojala Ulla Lassi Paavo Perämäki Riitta L. Keiski

Catalytic oxidation is a feasible and affordable technology for solvent emission abatement. However, finding optimal operation conditions is important, since they are strongly dependent on the application area of VOC incineration. This paper presents the results of the laboratory experiments concerning four most central parameters, that is, effects of concentration, gas hourly space velocity (G...

2016
Xuanxuan Cai Wei Sun Chaochao Xu Limei Cao Ji Yang

Selective catalytic reduction of NO X by hydrogen (H2-SCR) in the presence of oxygen has been investigated over the NiCo2O4 and Pd-doped NiCo2O4 catalysts under varying conditions. The catalysts were prepared by a sol-gel method in the presence of oxygen within 50-350 °C and were characterized using XRD, BET, EDS, XPS, Raman, H2-TPR, and NH3-TPD analysis. The results demonstrated that the doped...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده مهندسی شیمی 1393

در این تحقیق، شبیه سازی سه بعدی واکنش فرآیند تبدیل متان با بخار آب برای تولید هیدروژن در یک راکتور مونولیتیک لانه زنبوری در دمای 1073 کلوین (?c800) و فشار 1 اتمسفر مورد بررسی قرار گرفته است. ابتدا هندسه ی مورد نظر ترسیم شده است. سپس برای حل معادلات انتقال مومنتم و جرم و اجزا و حرارت و با اعمال شرایط مرزی و اولیه از نرم افزار کامسول استفاده شده است. در اعتبار سنجی این حل عددی به بررسی اثر ghsv ب...

2005
Guoan Du Sangyun Lim Yanhui Yang Chuan Wang Lisa Pfefferle Gary L. Haller

The catalytic performance of incorporated V-MCM-41 catalysts for the partial direct oxidation of methane to formaldehyde with molecular oxygen has been investigated. V-MCM-41 catalysts containing 0.56–1.86 wt.% V have been prepared by incorporating the vanadium ions into the framework of mesoporous siliceous MCM-41, resulting in a highly ordered structure with large BET surface area and high su...

2015
Ren Hongjuan Lou Diming Zhu Jian Luo Yiping

The Selective Catalytic Reduce (SCR) is studied. The unknown parameters of the SCR kinetic model equations are fitted based on the Genetic Algorithm (GA), which is in the range of the allowable error, compared to the experimental data. Then in AVL Boost software, the simulation results of SCR reaction are obtained. Compared to the test data, the simulation results prove that the parameter ident...

Journal: :Physical chemistry chemical physics : PCCP 2009
Etienne Séguin Sébastien Thomas Philippe Bazin Gary Bond Carlos Henriques Frédéric Thibault-Starzyk

An improved micro-reactor cell for IR spectroscopic studies of heterogeneous catalysis was built around a 5.8 GHz microwave cavity. The reactor can operate at 20 bars and with conventional heating up to 720 K, with reactant gas flows velocities (GHSV) from 25,000 to 50,000 h(-1). The temperature of the sample under microwave irradiation was measured by time resolved IR emission spectroscopy. Th...

Journal: :Catalysts 2021

The catalytic performance of Rh/TiO2 catalyst was investigated for the reaction Liquefied Petroleum Gas (LPG) steam reforming with respect to operating conditions employed. impacts temperature, steam/C ratio, Hourly Space Velocity (GHSV), and time were examined discussed both in absence presence butane feed. It found that is improved by increasing content feed, and/or decreasing GHSV. In effect...

Journal: :Energy 2022

Nickel and ruthenium promoted by ceria were compared as catalyst active phase for the production of synthetic natural gas in a 1 kW fixed-bed reactor (49 cm length 3 diameter). Both catalysts tested broad range conditions: 250–450 °C, 8000–16000 h−1 GHSV, 3.5–5.5H2/CO2 ratio, atmospheric pressure. The Ni-based presented higher CO2 conversion lower reduction BET area metal dispersion after utili...

In this research, the performance and kinetics of an iron/manganese oxide catalyst in a fixed-bed reactor by Fischer-Tropsch Synthesis is studied. The range of operating conditions are; P = 1 – 12 bar, T = 513 - 553 K, H2/CO ratio = 1 - 2 and GHSV = 4200 – 7000 ((〖cm〗^3 (STP))/h/g_cat). The effect of these independent variables, on Fischer-Tropsch product were performed by using a statistical m...

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