Catalytic decomposition of methanol for onboard hydrogen generation

  • 44 Pages
  • 3.83 MB
  • English
National Aeronautics and Space Administration, Scientific and Technical Information Office, for sale by the National Technical Information Service , [Washington], Springfield, Va
Hydrogen, Catalysts, Decomposition (Chemistry), Me
StatementTheodore A. Brabbs
SeriesNASA technical paper ; 1247
ContributionsUnited States. National Aeronautics and Space Administration. Scientific and Technical Information Office
The Physical Object
Pagination44 p. :
ID Numbers
Open LibraryOL14932101M

Catalytic decomposition of methanol for onboard hydrogen generation. [Washington]: National Aeronautics and Space Administration, Scientific and Technical Information Office ; Springfield, Va.: For sale by the National Technical Information Service, CATALYTIC DECOMPOSITION OF METHANOL FOR ONBOARD HYDROGEN GENERATION by Theodore A.

Brabbs Lewis Research Center SUMMARY The steam reformation of an equimolar mixture of methanol and water on a copper chromite catalyst was studied at three furnace temperatures and at methanol space ve- locities from to per hour.

The hydrogen space File Size: 1MB. In fact, methanol synthesis is the second source, after ammonia production, of hydrogen consumption (which has the highest energy content per weight) via several reactions, such as partial oxidation, steam reforming, autothermal reforming, methanol decomposition, or methanol-water solution electrolysis.

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Hydrogen generation by methanol decomposition yields two moles of hydrogen and one mole of carbon monoxide for every mole of methanol reacted: CH3OH -~ 2H2 + CO. (1) The use of decomposed methanol as a fuel for spark- ignition engines has been investigated by several authors [].Cited by: Methanol, best known as wood or "spirit" alcohol, occurs in small amounts in commonly however, it is created using a catalytic process involving hydrogen, carbon monoxide and carbon.

Catalytic production of hydrogen by steam reforming of methanol is an attractive option for use in decentralised production of clean electrical energy from fuel cells.

The catalytic production of hydrogen by steam reforming of methanol has been carried out over a NiAl-layered double hydroxide precursor and its calcined products in the temperature range of The most simple conversion method, as only methanol is used in the feeding, is thermal or catalytic decomposition (Eq.

(1) [2]. The decomposition of methanol leads to a product gas containing up to 67% hydrogen and 33% carbon monoxide. CH 3OH(g) → 2H 2(g) + CO(g) (1)File Size: KB.

3-based catalysts in the production of hydrogen from methanol through catalytic decomposition. For the decomposition reaction, the Pt and Pd catalysts promoted by ceria exhibit similar activity reaching % conversion at C.

Promoting with ceria had a positive effect on activity and selectivity. Among all catalysts, the 9% Pt– 10% CeO 2. Hydrogen, with a high energy density of kJ g −1, is an environmentally benign fuel, in which water is the only product of its reaction with oxygen [].Hydrogen, the most abundant element in nature, is, as well, the most versatile fuel due to the fact that it can be converted to other forms of energy as electricity through electrochemical processes, to heat through catalytic combustion, or Cited by: 1.

The rate of catalytic decomposition of methanol in the presence of steam has been studied using a commercial CuO‐ZnO‐Al 2 O 3. low temperature shift catalyst from ‐°C at one atmosphere pressure in a fixed bed ratios of steam to methanol of and and catalyst mass to molar feed rate ratios of 25 to kg.

mol −1 were utilized. A bi-catalytic system, in which Ru-MACHO-BH and Ru(H)2(dppe)2 interact in a synergistic manner, was developed for the base-free dehydrogenation of methanol. A total TON > was obtained with only trace amounts of CO contamination (Cited by:   T1 - Production of hydrogen in the decomposition of ethanol and methanol over unsupported Mo2C catalysts.

AU - Széchenyl, Aleksandar. AU - Solymosi, Frigyes. PY - /7/5. Y1 - /7/5. N2 - Mo2C prepared by the carburization of MoO3 with a C2H6/H2 mixture is an effective catalyst for the decomposition of both ethanol and by:   Methane cracking on a 5-wt% Ni/γ-Al2O3 was studied in a thermobalance.

Results showed that the faster rates for carbon deposition obtained at high temperatures (– °C) are accompanied by faster deactivation.

A similar trend was observed for lower initial masses of catalyst (– g). Finally, a method of partial gasification was proposed as a promising route for catalyst Cited by: Catalytic decomposition of methanol for onboard hydrogen generation / ([Washington]: National Aeronautics and Space Administration, Scientific and Technical Information Office ; Springfield, Va.: For sale by the National Technical Information Service, ), by Theodore A.

Brabbs and United States. Hydrogen by Methanol Decomposition PEP Review Published May several engineering companies have developed technology for producing hydrogen by the decomposition of methanol (sometimes referred to as methanol reforming).

These processes can be designed to meet the purity and demand needs of a wide range of hydrogen consumers. Methanol is currently considered one of the most useful chemical products and is a promising building block for obtaining more complex chemical compounds, such as acetic acid, methyl tertiary butyl ether, dimethyl ether, methylamine, etc.

Methanol is the simplest alcohol, appearing as a colorless liquid and with a distinctive smell, and can be produced by converting CO2 and H2, with the Cited by: 6. Traditionally, hydrogen is produced by reforming or partial oxidation of methane to produce synthesis gas, followed by the water-gas shift reaction to convert CO to CO 2 and produce more hydrogen, followed in turn by a purification or separation procedure.

This paper presents results for the catalytic decomposition of undiluted methane into hydrogen and carbon using nanoscale, binary, Fe−M Cited by:   A Ag-Au(1-D)-CeO 2 catalyst was prepared by precipitation method using Ag-Au nanowires and Ce(NO 3) 3 6H 2 O as precursors.

The catalytic activity of the catalysts was evaluated in a steam reforming of methanol (SRM) reaction from to °C. % of methanol conversion was observed at °C together with high H 2 selectivity. This study evidenced that the use of 1-D metallic Cited by: 2. Plate Type Methanol Steam Reformer Using New Catalytic Combustion for a Fuel Cell Methanol steam reforming, which is an endothermic reaction, needs some heating.

Both methanol conversion ratio and carbon monoxide (CO) concentration increase when temperature is Cited by: 8. @article{osti_, title = {Plasma catalytic reforming of methane}, author = {Bromberg, L.

and Cohn, D. and Rabinovich, A. and Alexeev, N.}, abstractNote = {Thermal plasma technology can be efficiently used in the production of hydrogen and hydrogen-rich gases from methane and a variety of fuels.

This paper describes progress in plasma reforming experiments and calculations of high. title = "Reusable homogeneous catalytic system for hydrogen production from methanol and water", abstract = "An efficient system catalyzed by a Ru-PNN pincer complex was developed for reforming methanol to H2 and CO2 (absorbed by base) under relatively low temperature (around °C), and good yields of H2 were obtained (∼80%).Cited by: Catalytic on-board hydrogen production from methanol and ammonia for mobile application vorgelegt von Dipl.-Ing.

Hary Soerijanto aus Situbondo, Indonesien Von der Fakultät II – Mathematik und Naturwissenschaften der Technischen Universität Berlin zur Erlangung des akademischen Grades Doktor der Ingenieurwissenschaften Dr.-Ing.

COx Free Hydrogen Production by Catalytic Decomposition of Methane Over Porous Ni/Al2O3 Catalysts Iranian Journal of Chemical Engineering, Vol.8, No. 4 25 is poisoned by COx[2]. So, the development of environmentally friendly methods of producing hydrogen is very helpful from the aspect of preventing global warming and saving energy.

Based on methanol vapor pressure at the measured temperature, the saturated methanol-air mixture yields an effective equivalence ratio 𝜙 of However, previous work by Ma and coworkers [ 25 ] with identical methanol delivery system indicates that the equivalence ratio Cited by: flame pulsations.

Dobbeling and Griffin () proposed partial catalytic oxidation of a fraction of the natural gas as a viable way of producing hydrogen in gas-tur-bine systems. The knowledge of hydrogen CST is, therefore, an important step in the understanding of hydrogen-assisted CST.

In hydrogen-assisted CST, care has 22 J. MANTZARAS et al. An illustrative catalytic oxidation is the conversion of methanol to the more valuable compound formaldehyde using oxygen in air: 2 CH 3 OH + O 2 → 2CH 2 O + 2 H 2 O. This conversion is very slow in the absence of catalysts.

Typical oxidation catalysts are metal oxides and metal carboxylates. Applied catalysis. Fine chemicals. The catalytic activity of the Au-Ag/CeO 2 catalyst and silver supported on ZnO 1D rods catalysts on the steam reforming methanol reaction for hydrogen production was reported [].

The catalytic activity on Ag/ZnO sample with low Ag content showed better performance Cited by: 4. Fuel processing of liquid fuels to hydrogen containing reformate appears to be a practical option for electric power generation applications based upon fuel cell technology (Kolb, ).

Methanol is a highly suitable fuel, owing to its high energy density and its potential for future sustainable production Size: 64KB. generation and CO2 removal, which significantly simplifies the pro-cess.

The heat required for the decomposition of methane can be supplied by burning % of the produced hydrogen, and thus no CO2 emission occurs. Muradov [a, b] investigated various kinds of carbon, such as activated carbons, carbon blacks, acety. CATALYTIC SYNTHESIS OF METHANOL FROM HYDROGEN AND CARBON MONOXIDE ON A COPPER-ZINC OXIDE SUPPORTED CATALYST Rajesh M.

Agny and Christos G.

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Takoudis School of Chemical Engineering Purdue University W. Lafayette, IN INTRODUCTION Most kinetic studies of methanol synthesis over Cu/ZnO catalysts have been carried out using mix-File Size: KB.

Base-free hydrogen generation from methanol using a bi-catalytic system. Monney A(1), Barsch E, Sponholz P, Junge H, Ludwig R, Beller M. Author information: (1)Leibniz-Institut für Katalyse e.V. and der Universität Rostock, Albert-Einstein-Strasse 29a, Rostock, Germany.

@ by: Hydrogen Production via Thermo Catalytic Decomposition of Methane over Bimetallic Ni-Cu/AC Catalysts: Effect of Copper Loading and Reaction Temperature. Franz Adrian L.

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Sy, Leonila C. Abella, and Teddy G. Monroy. International Journal of Chemical .