Hydrogen from methanol for fuel cells in mobile systems: development of a compact reformer

Höhlein, B.; Boe, M.; Bøgild-Hansen, J.; Bröckerhoff, P.; Colsman, G.; Emonts, Bernd; Menzer, R.; Riedel, E.

doi:10.1016/s0378-7753(96)02357-9

Cited by 89 publications

(28 citation statements)

References 1 publication

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“…These liquids can easily be transported through the existing infrastructure and have lesser constraints concerning safety than for instance gaseous hydrogen storage. Alcohols transformation into gaseous mixtures enriched with hydrogen can be achieved by several reactions such as steam reforming (SR) [142,20], partial oxidation (PO) [135] and oxidative steam reforming (OSR) [143].…”

Section: Reforming Of Alcoholsmentioning

confidence: 99%

“…The accepted levels of CO are between 10 and 100 ppm [134]. The main disadvantage of SR is its endothermicity requiring external heating, which makes short start-up and fast transient behaviour difficult to achieve [143]. The schematic flow sheet for a conventional SRM process is shown in Fig.…”

Section: Bulletin Of Chemical Reaction Engineering and Catalysis 6 (2)mentioning

confidence: 99%

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Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Прасад

2011

Bull. Chem. React. Eng. Catal.

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In this review article various applications and preparation methods of copper chromite catalysts have been discussed. While discussing it is concluded that copper chromite is a versatile catalyst which not only catalyses numerous processes of commercial importance and national program related to defence and space research but also finds applications in the most concerned problem worldwide i.e. environmental pollution control. Several other very useful applications of copper chromite catalysts are in production of clean energy, drugs and agro chemicals, etc. Various preparation methods about 15 have been discussed which depicts clear idea about the dependence of catalytic activity and selectivity on way of preparation of catalyst. In view of the globally increasing interest towards copper chromite catalysis, reexamination on the important applications of such catalysts and their useful preparation methods is thus the need of the time. This review paper encloses 369 references including a well-conceivable tabulation of the newer state of the art.

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Section: Reforming Of Alcoholsmentioning

confidence: 99%

Section: Bulletin Of Chemical Reaction Engineering and Catalysis 6 (2)mentioning

confidence: 99%

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Прасад

2011

Bull. Chem. React. Eng. Catal.

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“…When the reaction temperature reached 260 °C, methanol conversion efficiency was about 90%. Hohlein et al [14] developed a methanol steam reformer system which was combined with catalytic burner and gas handling equipment at 240 °C, 260 °C, and 280 °C of operating conditions. They found that the CO concentration of reformer outputs was related to the heating mode and the changed reformer temperature curve closely.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-Rich Gas for Clean Combustion in a Dual-Fuel Compression Ignition Engine

Wu¹,

Hsu²,

Horng³

2017

JOCET

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Abstract-Since burning of hydrogen emits fewer pollutants, it has been using as a clean alternative or auxiliary fuel of engines. This study is to develop a diesel/ hydrogen-rich gas dual fuel engine with methanol steam reforming method and design of EGR (Exhaust Gas Recirculation) system to investigate engine performance and exhausting pollutants. The measured items are composed of the gas pressure of cylinder, crank angle, diesel consumption rate, hydrogen consumption rate, air flow rate, and emissions (HC, CO 2 , NO x , and Smoke), and the contents of hydrogen-rich gas. The authors analyze how the hydrogen-rich gas addition with EGR influences the combustion performance and emissions. The heat recovery reforming system can solve the storage and producing problem of hydrogen. Furthermore, the authors little altered the engine structure, and it is easy to put the energy saving and pollutants decrease into effect.Index Terms-Clean combustion, diesel/hydrogen-rich gas engine, emission reduction, exhaust heat recovery, exhaust gas recirculation, methanol steam reforming.

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“…The main disadvantage of SR is its endothermicity requiring external heating, which makes short start-up and fast transient behavior difficult to achieve [4].…”

Section: Introductionmentioning

confidence: 99%

Compact string reactor for autothermal hydrogen production

2007

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This study addresses the development of a compact reactor for oxidative steam-reforming of methanol (OSRM) to produce hydrogen in autothermal mode for fuel cells. The string reactor uses catalytically active brass wires with a diameter of 500 mm placed in parallel into a tube. The micro-channels in the reactor for gases are formed between the wires presenting hydrodynamics similar to the one in multi-channel micro-reactors. Due to the high thermal conductivity of brass, the heat generated during methanol oxidation at the reactor entrance is transferred to the zone of the endothermic steam-reforming. The catalysts are prepared by Al-alloy formation on the surface of the brass wires followed by the partial leaching of Al. The catalyst presents a porous layer with the morphology of Raney metals and the chemical composition consistent with the Cu/Zn/Al-mixed oxide. The catalyst surface was additionally modified by incorporating chromium leading to Cr/Cu-spinel. This decreases the degree of the reduction of copper oxide and sintering leading to a stable catalyst. The catalyst was tested in OSRM showing high activity and selectivity to carbon dioxide and hydrogen. The string reactor presents nearly isothermal profile since the temperatures gradient within the reactor length is about 3 K. Micro-structured string reactor presents a short start-up and a fast transient behavior showing a rapid temperature change when adjusting the oxygen amount introduced into the reactor. #

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Hydrogen from methanol for fuel cells in mobile systems: development of a compact reformer

Cited by 89 publications

References 1 publication

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Hydrogen-Rich Gas for Clean Combustion in a Dual-Fuel Compression Ignition Engine

Compact string reactor for autothermal hydrogen production

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