bifunctional catalyst

bifunctional catalyst

[¦bī¦fəŋk·shən·əl ′kad·ə‚list]
(chemistry)
A catalytic substance that possesses two catalytic sites and thus is capable of catalyzing two different types of reactions. Also known as dual-function catalyst.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Xia et al., "Direct conversion of cellulose into sorbitol with high yield by a novel mesoporous niobium phosphate supported ruthenium bifunctional catalyst," Applied Catalysis A: General, vol.
The catalytic performance of the bifunctional catalyst was investigated by hydrotreating Jatropha curcas seed oil in a continuous flow tubular reactor of 9 mm internal diameter and 300 mm in length vertically within the tubular programmable temperature.
On the other side, 2-ethylhexanol is industrially produced through three consecutive reaction processes such as, propylene hydroformylation to n-butyraldehyde, n-butyraldehyde self-condensation, and typical aldol condensation reaction, which can be catalyzed by an acid, a base, or an acid-base bifunctional catalyst, to give 2-ethyl-2-hexenal, and a hydrogenation, catalyzed by the supported Cu or Ni catalysts, of this last compound to give 2-ethylhexanol [21].
Li et al., "A highly stable bifunctional catalyst based on 3D Co[(OH).sub.2]@NCNTs@NF towards overall water-splitting," Nano Energy, vol.
In general, three air electrode configurations have been used for the metal-air battery [4]: (a) a two-electrode configuration, one each for the OER and ORR; (b) a single electrode with a catalyst layer, which is a bifunctional catalyst participating in both the OER and ORR; and (c) a single electrode with two catalyst layers, one each for the OER and ORR.
This is a unique bifunctional catalyst system different from anything known and offers an opportunity to invent a completely new catalytic system for this reaction.
Lee, "Upgrading of light cycle oil by partial hydrogenation and selective ring opening over an iridium bifunctional catalyst," Research on Chemical Intermediates, vol.
Xu, "Direct synthesis of DME over bifunctional catalyst: surface properties and catalytic performance," Applied Catalysis A, vol.
and Wang, I.: 1996, The reaction mechanism of C6 hydrocarbons over acid-base bifunctional catalysts, Ti[O.sub.2]-Zr[O.sub.2], J.
Apart from the ORR activity, excellent OER activity is particularly critical for bifunctional catalysts [20].