A study of the influence of the synthesis conditions upon the catalytic properties of Co/SiO2 or Co/Al2O3 catalysts used for ethanol steam reforming

Kaddouri, A.; Mazzocchia, C.

doi:10.1016/j.catcom.2004.03.008

Cited by 112 publications

(38 citation statements)

References 30 publications

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“…It was reported high catalytic activity of Co/SiO 2 and Co/Al 2 O 3 for steam reforming of ethanol (Kaddouri & Mazzocchia, 2004), concluding that the product distribution was dependent on both the nature of the support and the method of catalyst preparation, thereby suggesting metal-support interaction. The ethanol steam reforming over Co/Al 2 O 3 and Co/SiO 2 was studied (Batista et al, 2004), the catalysts showed average conversion higher than 70 % at 400°C.…”

Section: Cobaltmentioning

confidence: 99%

Sustainable Hydrogen Production by Catalytic Bio-Ethanol Steam Reforming

Palma¹,

Castaldo²,

Ciambelli³

et al. 2012

Greenhouse Gases - Capturing, Utilization and Reduction

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Section: Cobaltmentioning

confidence: 99%

Sustainable Hydrogen Production by Catalytic Bio-Ethanol Steam Reforming

Palma¹,

Castaldo²,

Ciambelli³

et al. 2012

Greenhouse Gases - Capturing, Utilization and Reduction

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“…Versatile synthesis strategies have been developed for obtaining catalysts with high performance during BESR. Incipient wetness impregnation (IWI) [88][89][90][91], wet impregnation [84,92,93], sol-gel (SG) [94,95], and coprecipitation (CP) [63,64,86,87] are the most commonly utilized methods, each of which has its own advantages and disadvantages. Impregnation is the most convenient method to be scaled up, for manufacturing.…”

Section: Catalyst Optimization Strategiesmentioning

confidence: 99%

Catalytic Hydrogen Production from Bioethanol

Song

2017

Hydrogen Production Technologies

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“…Numerous publications are available with regard to development of catalysts of steam conversion of methanol [14][15][16][17] and ethanol [18][19][20][21][22][23][24][25][26][27][28], esters [29] for production of SG. The most detailed studies of steam conversion of methanol were performed with coppercontaining compounds, including metallic copper and its oxide, as well as other types of catalysts, the main component of which is copper in combination of oxides of other metals, such as Cu-Zn, Cu-Mn, Cu-Al, CuCr and others.…”

Section: Theoretical Backgrounds Of Thermochemical Recoverymentioning

confidence: 99%

“…Steam conversion of ethanol was studied on applied cobalt [17][18][19], rhodium [18, [20][21][22][23][24][25], nickel [19,[23][24][25], nickel-copper [26][27][28] and palladium [20][21][22] catalysts. It was determined that in steam conversion of ethanol catalysts usually provide complete conversion at flow rates of GHSV = 5000-100000 h -1 , 500-700°Ñ and H 2 O/C 2 H 5 OH ratio from 2 to 14.…”

Section: Theoretical Backgrounds Of Thermochemical Recoverymentioning

confidence: 99%

Thermochemical Heat Recovery Based on External Heat Engine

Кириллов¹,

Samoilov²,

Шигаров³

et al. 2015

Biosci., Biotech. Res. Asia

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This work discusses the issues of thermochemical recovery as a method to improve efficiency of fuel utilization in external heat engines (EHE).Key words: Catalyst, Synthesis gas, Thermochemical recovery, External heat engine, mathematical model.Practical application of thermodynamic cycles of thermal machines is related with implementation of heat transfer from heating source to working fluid (WF) or heat withdrawal from it after working cycle. With regard to thermal engines, conversion of chemical energy of fuel into work is implemented in two stages: at the first stage energy is converted into heat, and at the second stage the obtained heat is converted into work. In this relation intensification of heat transfer is one of the conditions of improvement of the observed efficiency of thermodynamic cycles of thermal machines. Theoretical efficiency of reversible thermodynamic cycle is determined by the ratio of difference between average maximum temperature and average minimum temperature of heat withdrawal and does not exceed the efficiency of the Carnot cycle. Increase in the average maximum temperature is limited with thermal resistance of materials and increase with heat losses of engine into external environment. In this regard selection of WF for EHE is highly important. Decrease in average temperature of heat withdrawal is limited with environmental and engineering considerations. Due to existence of such limitations the only way to increase overall efficiency of engine is related with heat recovery of exhaust gases (EG) by means of TCR either of cogeneration.It 3027-3039 (2015) with EG into environment equals to 35 %; heat transferred to cooling system: 30 %; portion of losses due to incomplete fuel combustion: about 2 %, and unaccounted heat losses reach 3 %. Theoretically, it is possible to recover heat losses related with heat withdrawal into environment and into cooling system, and thus to achieve increase in thermal efficiency. The essence of TCR is that a portion of EG heat and heat, transferred into engine cooling system, is used for endothermic conversion of initial fuel into another type of fuel possessing higher enthalpy of products. Due to this there is an increase in total efficiency of fuel utilization [2][3][4]. In terms of energy the most profitable solution is conversion of fuels into SG, which is a mixture of CO and Í 2 . The first scientific background of this method to improve EHE efficiency was given by Nosach [5], who specified it as TCR, and its practical implementation was applied to stationary solid fuel facilities.The use of TCR makes it possible to achieve two important purposes simultaneously: 1) to increase the lower heating value of reformates with regard to initial fuel. Theoretical maximum increase can reach 20-22 % upon steam reforming of propane to CO and H 2 (without ÑÎ 2 and especially of ÑÍ 4 in the composition) [2]. 2) to increase stability of catalytic burning in nonadiabatic operation mode of catalytic burner (due to heat withdrawal into engine or just heat losse...

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A study of the influence of the synthesis conditions upon the catalytic properties of Co/SiO2 or Co/Al2O3 catalysts used for ethanol steam reforming

Cited by 112 publications

References 30 publications

Sustainable Hydrogen Production by Catalytic Bio-Ethanol Steam Reforming

Sustainable Hydrogen Production by Catalytic Bio-Ethanol Steam Reforming

Catalytic Hydrogen Production from Bioethanol

Thermochemical Heat Recovery Based on External Heat Engine

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