scholarly journals Catalytic hydrogenation of CO 2 for methanol production in fixed-bed reactor using Cu-Zn supported on gamma-Al 2 O 3

2017 ◽  
Vol 138 ◽  
pp. 739-744 ◽  
Author(s):  
Sumpan Gesmanee ◽  
Wanida Koo-amornpattana
Keyword(s):  
Catalytic Hydrogenation ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Methanol Production ◽  
Hydrogenation Of Co

scholarly journals Simulation of CO2 Conversion into Methanol in Fixed-bed Reactors: Comparison of Isothermal and Adiabatic Configurations

REAKTOR ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 131-135
Author(s):  
Fadilla Noor Rahma
Keyword(s):  
Fixed Bed ◽  
Value Added ◽  
Fixed Bed Reactor ◽  
Inlet Temperature ◽  
Methanol Production ◽  
Greenhouse Gases Emissions ◽  
Fixed Bed Reactors ◽  
Adiabatic Reactor ◽  
Co2 Conversion Into Methanol ◽  
Feed Inlet

CO2 capture and utilization (CCU) has been widely considered as a potential solution to overcome global warming. Conversion of CO2 into methanol is an interesting option to transform waste into value-added chemical while also reducing greenhouse gases emissions in the atmosphere. In this paper, utilization of CO2 into methanol was simulated using Aspen Plus software. The reaction between CO2 and H2 to produce methanol and water was carried out in a simulated fixed-bed reactor with Cu/ZnO/Al2O3 commercial catalyst, following LHHW (Langmuir – Hinshelwood – Hougen – Watson) kinetic model. Isothermal and adiabatic reactor configurations were compared under similar feed conditions and the concentration profile along the reactor was observed. The result showed that isothermal configuration converted 3.23% more CO2 and provided 16.34% higher methanol yield compared to the adiabatic reactor. Feed inlet temperature variation was applied and the effect to methanol production on both configurations was studied. The highest methanol yield for adiabatic and isothermal reactor was obtained at 200 oC and 240 oC respectively.

Continuous synthesis of methanol: heterogeneous hydrogenation of ethylene carbonate over Cu/HMS catalysts in a fixed bed reactor system

2015 ◽  
Vol 51 (72) ◽  
pp. 13776-13778 ◽  
Author(s):  
Xi Chen ◽  
Yuanyuan Cui ◽  
Chao Wen ◽  
Bin Wang ◽  
Wei-Lin Dai
Keyword(s):  
Ethylene Glycol ◽  
Catalytic Hydrogenation ◽  
Ethylene Carbonate ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Synthetic Process ◽  
System P ◽  
Synthesis Of Methanol ◽  
Heterogeneous Hydrogenation ◽  
Hydrogenation Of Ethylene

Continuous fixed-bed catalytic hydrogenation of ethylene carbonate (EC) to methanol and ethylene glycol (EG), an emerging synthetic process of methanol via indirect conversion of CO2, was successfully performed over Cu/HMS catalysts prepared by the ammonia evaporation (AE) method.

Effect of Catalyst Synthesis Parameters on the Performance of CO2 Hydrogenation to Methanol over SBA-15 Supported Cu/ZnO-Based Catalysts

2020 ◽  
Vol 400 ◽  
pp. 159-169
Author(s):  
Sara F.H. Tasfy ◽  
Noor Asmawati Mohd Zabidi ◽  
Maizatul Shima Shaharun ◽  
Duvvria Subbarao
Keyword(s):  
Surface Area ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Bet Surface Area ◽  
Methanol Production ◽  
Synthesis Conditions ◽  
Metal Loading ◽  
Synthesis Parameters ◽  
Metal Support Interaction ◽  
Active Metal

Bimetallic Cu-ZnO-based catalyst were systematically prepared via impregnation technique under controlled synthesis conditions of active metal loading, ratio of active metal Cu:Zn and synthesis pH. The effect of the synthesis condition on the performance of the Cu-ZnO supported catalysts with respect to the hydrogenation of CO2 to methanol in micro-activity fixed-bed reactor at 250°C, 2.25 MPa, and 75% H2/25%CO2 ratio. The synthesized catalysts were characterized by transmission electron microscopy (TEM) and temperature programmed desorption, reduction, oxidation and pulse chemisorption (TPDRO) and the surface area determination was also performed. The results demonstrate that the catalytic structure, activity, and methanol selectivity was strongly affected by the synthesis parameters. Increasing of synthesis pH from 1 to 7 shows better metal particles distribution, Cu desperation of 29%, higher BET surface area as well as Cu surface area, while further increasing on pH revealed on particles agglomeration and weak metal-support interaction. In addition, increasing of the active metal loading from 5 to 15 % resulted in dramatic increase in the conversion of CO2 and methanol production while further increase caused lower catalytic performance. Moreover, catalyst with total loading of 15%, Cu:Zn ratio of 70:30 synthesized at pH of 7 exhibit higher catalytic activity of 14%, methanol selectivity of 92%, and TOF of 1.24×103 s-1 compared with other catalyst prepared under various conditions

Effects of Nb Promoter on the Properties of Cu/ZnO/SBA-15 Catalyst and Performance in Methanol Production

2016 ◽  
Vol 708 ◽  
pp. 94-97 ◽  
Author(s):  
Noor Asmawati Mohd Zabidi ◽  
Sara Tasfy ◽  
Maizatul Shima Shaharun
Keyword(s):  
Mesoporous Silica ◽  
Active Sites ◽  
Fixed Bed ◽  
Alternative Route ◽  
Methanol Production ◽  
Surface Areas ◽  
Attractive Option ◽  
And Performance ◽  
Hydrogenation Of Co

Hydrogenation of CO2 provides an alternative route for methanol production and attractive option for CO2 utilization. The present work investigates the synthesis of Cu-based catalyst on mesoporous silica (SBA-15) and promotion of the Cu-based catalyst with niobium (Nb). The addition of Nb promoter enhanced the reducibility and dispersion of the active sites as well as increased the BET and Cu surface areas. The performance of the synthesized catalyst in the hydrogenation of CO2 was evaluated in a fixed-bed microreactor at 523K, 22.5bar and H2/CO2 of 3. The CO2 conversion using the Cu/ZnO/SBA-15 catalyst was 14.2 % and increased to 17.1% on the Nb-promoted catalyst. The yield of methanol obtained using the un-promoted Cu-based catalyst was 51.4 g/h.gcat and it increased to 143 g/h.gcat over the Nb-promoted catalyst.

Methanol production in an optimized dual-membrane fixed-bed reactor

2011 ◽  
Vol 50 (11-12) ◽  
pp. 1177-1185 ◽  
Author(s):  
M. Farsi ◽  
A. Jahanmiri
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Methanol Production

scholarly journals PEMANFAATAN KATALIS NI/ZEOLIT PADA HIDROGENASI KATALITIK ETIL PALMITAT MENJADI SETIL ALKOHOL

Molekul ◽  
2010 ◽  
Vol 5 (2) ◽  
pp. 83
Author(s):  
Dwi Kartika ◽  
Triyono Triyono ◽  
Karna Wijaya ◽  
Dewi Yuanita L ◽  
D. Setyawan PH D. Setyawan PH
Keyword(s):  
Flow Rate ◽  
Catalytic Hydrogenation ◽  
Natural Zeolite ◽  
Methyl Palmitate ◽  
Fixed Bed ◽  
Reactor Vessel ◽  
Cetyl Alcohol ◽  
Zeolite Catalysts ◽  
Fixed Bed Reactor ◽  
Catalyst Amount

The catalytic hydrogenation of methyl palmitate to cetyl alcohol using Ni supported on activated natural zeolite catalysts (Ni/Zeolite) has been carried out. In this work, the effect of catalyst amounts and H2 flow rate on methyl palmitate conversion and yield of cetyl alcohol were studied. Catalytic hydrogenation was performed in stainless steel fixed bed reactor. The methyl palmitate (10 g) was loaded into the reactor vessel at 400 °C for 30 minutes. In order to study the effects of catalyst amount at constant H2 flow rate, the catalyst were varied i.e. 5, 10, and 15 g. To investigate the effects of H2 flow rate were varied from 20, 40, and 60 mL.min-1 at constant catalyst amount. The composition of the products was analyzed by GC and GC-MS. The results showed that methyl palmitate conversion increase with the increasing of catalyst amount. The highest methyl palmitate conversion (45.62 %) and yield of cetyl alcohol (36.44 %) were obtained for 15 g catalyst and 40 mL. min-1 H2 flow rate.

scholarly journals Optimal Fixed Bed Reactor Network Configuration for the Efficient Recycling of CO2 into Methanol

2021 ◽  
Author(s):  
Ali Elkamel ◽  
Gholam Reza Zahedi ◽  
Chris Marton ◽  
Ali Lohi
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Industrial Plant ◽  
Production Network ◽  
Heterogeneous Model ◽  
Methanol Production ◽  
In Series ◽  
Maximum Production Rate ◽  
Production Period ◽  
Reactor Network

An optimal design strategy of a network of fixed bed reactors for Methanol Production (MP) is proposed in this study. Both methanol production and profit spanning a production period of eight years have been set as objective functions to find the optimal production network. The conservation of mass and energy laws on a heterogeneous model of a single industrial methanol reactor was first developed. The model was solved numerically and was validated with industrial plant data. Different reactor network arrangements were then simulated in order to find an optimal superstructure. It was found that a structure of four reactors (two in series in parallel with another two in series) provide maximum production rate. The application of the more realistic objective function of profit showed that a configuration of two parallel reactors is the best configuration. This optimal structure produces 92 tons/day more methanol than a single reactor.

scholarly journals Optimal Fixed Bed Reactor Network Configuration for the Efficient Recycling of CO2 into Methanol

2021 ◽  
Author(s):  
Ali Elkamel ◽  
Gholam Reza Zahedi ◽  
Chris Marton ◽  
Ali Lohi
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Industrial Plant ◽  
Production Network ◽  
Heterogeneous Model ◽  
Methanol Production ◽  
In Series ◽  
Maximum Production Rate ◽  
Production Period ◽  
Reactor Network

An optimal design strategy of a network of fixed bed reactors for Methanol Production (MP) is proposed in this study. Both methanol production and profit spanning a production period of eight years have been set as objective functions to find the optimal production network. The conservation of mass and energy laws on a heterogeneous model of a single industrial methanol reactor was first developed. The model was solved numerically and was validated with industrial plant data. Different reactor network arrangements were then simulated in order to find an optimal superstructure. It was found that a structure of four reactors (two in series in parallel with another two in series) provide maximum production rate. The application of the more realistic objective function of profit showed that a configuration of two parallel reactors is the best configuration. This optimal structure produces 92 tons/day more methanol than a single reactor.

THERMODYNAMIC ANALYSIS OF A FIXED-BED REACTOR FOR THE THERMOCHEMICAL ENERGY STORAGE SYSTEM Ca(OH)2/CaO

2020 ◽  
Vol 51 (16) ◽  
pp. 1497-1516
Author(s):  
Caifeng Huang ◽  
Min Xu ◽  
Xiulan L. Huai
Keyword(s):  
Energy Storage ◽  
Thermodynamic Analysis ◽  
Storage System ◽  
Fixed Bed ◽  
Energy Storage System ◽  
Fixed Bed Reactor
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