Microfiber knits for catalytic converters

A. Mayer; A. Buck; G. Emig; B. Gmehling; N. Popovska; K. Hölemann; E. Wintermantel; M. Oser

doi:10.4271/970479

Microfiber knits for catalytic converters

A. Mayer, A. Buck, G. Emig, B. Gmehling, N. Popovska, K. Hölemann, E. Wintermantel, M. Oser

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

1. ABSTRACT Microfibers with high specific micro-surface can be knitted into two-dimensional structures with large internal porosity. Catalytically active metals can be deposited on the fibers with high dispersion by wet-impregnation, sol-gel or CVD, respectively. These microfiber knits may be used for exhaust gas treatment systems with a triple function: particle filtration, gas conversion and muffling. The total oxidation of propane on Pd and Pt coated fibers has been studied as a test reaction. Conversion temperature could be remarkably reduced compared to cellular structures. For a bimetallic (Pt-Pd) coating, the activity is independent of humidity or oxygen concentration. Thus a catalytic converter based on micro-fiber knits appears feasible. Its high mass and heat transfer prevent hot spots. And it functions as submicron filter for combustion aerosols. Integrated electric heating can also be provided in case of low gas temperatures. First tests on engines show promising results.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/970479
State	Published - 1997
Externally published	Yes
Event	International Congress and Exposition - Detroit, MI, United States Duration: 24 Feb 1997 → 27 Feb 1997

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title = "Microfiber knits for catalytic converters",

abstract = "1. ABSTRACT Microfibers with high specific micro-surface can be knitted into two-dimensional structures with large internal porosity. Catalytically active metals can be deposited on the fibers with high dispersion by wet-impregnation, sol-gel or CVD, respectively. These microfiber knits may be used for exhaust gas treatment systems with a triple function: particle filtration, gas conversion and muffling. The total oxidation of propane on Pd and Pt coated fibers has been studied as a test reaction. Conversion temperature could be remarkably reduced compared to cellular structures. For a bimetallic (Pt-Pd) coating, the activity is independent of humidity or oxygen concentration. Thus a catalytic converter based on micro-fiber knits appears feasible. Its high mass and heat transfer prevent hot spots. And it functions as submicron filter for combustion aerosols. Integrated electric heating can also be provided in case of low gas temperatures. First tests on engines show promising results.",

author = "A. Mayer and A. Buck and G. Emig and B. Gmehling and N. Popovska and K. H{\"o}lemann and E. Wintermantel and M. Oser",

year = "1997",

doi = "10.4271/970479",

language = "English",

journal = "SAE Technical Papers",

issn = "0148-7191",

publisher = "SAE International",

note = "International Congress and Exposition ; Conference date: 24-02-1997 Through 27-02-1997",

}

TY - JOUR

T1 - Microfiber knits for catalytic converters

AU - Mayer, A.

AU - Buck, A.

AU - Emig, G.

AU - Gmehling, B.

AU - Popovska, N.

AU - Hölemann, K.

AU - Wintermantel, E.

AU - Oser, M.

PY - 1997

Y1 - 1997

N2 - 1. ABSTRACT Microfibers with high specific micro-surface can be knitted into two-dimensional structures with large internal porosity. Catalytically active metals can be deposited on the fibers with high dispersion by wet-impregnation, sol-gel or CVD, respectively. These microfiber knits may be used for exhaust gas treatment systems with a triple function: particle filtration, gas conversion and muffling. The total oxidation of propane on Pd and Pt coated fibers has been studied as a test reaction. Conversion temperature could be remarkably reduced compared to cellular structures. For a bimetallic (Pt-Pd) coating, the activity is independent of humidity or oxygen concentration. Thus a catalytic converter based on micro-fiber knits appears feasible. Its high mass and heat transfer prevent hot spots. And it functions as submicron filter for combustion aerosols. Integrated electric heating can also be provided in case of low gas temperatures. First tests on engines show promising results.

AB - 1. ABSTRACT Microfibers with high specific micro-surface can be knitted into two-dimensional structures with large internal porosity. Catalytically active metals can be deposited on the fibers with high dispersion by wet-impregnation, sol-gel or CVD, respectively. These microfiber knits may be used for exhaust gas treatment systems with a triple function: particle filtration, gas conversion and muffling. The total oxidation of propane on Pd and Pt coated fibers has been studied as a test reaction. Conversion temperature could be remarkably reduced compared to cellular structures. For a bimetallic (Pt-Pd) coating, the activity is independent of humidity or oxygen concentration. Thus a catalytic converter based on micro-fiber knits appears feasible. Its high mass and heat transfer prevent hot spots. And it functions as submicron filter for combustion aerosols. Integrated electric heating can also be provided in case of low gas temperatures. First tests on engines show promising results.

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U2 - 10.4271/970479

DO - 10.4271/970479

M3 - Conference article

AN - SCOPUS:85072466648

SN - 0148-7191

JO - SAE Technical Papers

JF - SAE Technical Papers

T2 - International Congress and Exposition

Y2 - 24 February 1997 through 27 February 1997

ER -

Microfiber knits for catalytic converters

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