DESIRABLE CATALYST PROPERTIES IN SELECTIVE OXIDATION REACTIONS.

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

Heterogeneous oxide-catalyzed selective oxidation reactions can be classified into dehydrogenation and dehydrogenation with oxygen insertion. The oxide properties that are important in each of the steps in these reactions are discussed. The breaking of the C-H bonds in alkanes is facilitated by weakly adsorbed oxygen. The C-H bond breaking of alkenes is enhanced by strongly basic surface lattice oxygen and cations that are soft acid and undergo redox readily. Desorption of alkenes and dienes is enhanced by cations that are hard acid. The selective CO bond formation is controlled by the number and the ease of removal of the available lattice oxygen, while the combustion reaction can be minimized by shortening the residence time of the surface intermediates, weakening the adsorption of the desired products and minimizing the amount of weakly adsorbed oxygen or the density of combustion sites. The function of a promoter is to enhance the rate of the rate- and selectivity-determining steps. Thus the desirable influence of a promoter on the solid depends on the nature of the critical step.

Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalIndustrial & Engineering Chemistry, Product Research and Development
Volume25
Issue number2
Publication statusPublished - Jun 1986

Fingerprint

catalyst
Oxygen
oxidation
Oxidation
oxygen
Catalysts
alkene
Alkenes
Dehydrogenation
Oxides
Olefins
Cations
combustion
cation
Positive ions
oxide
Alkanes
Acids
acid
Carbon Monoxide

ASJC Scopus subject areas

  • Engineering(all)
  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

DESIRABLE CATALYST PROPERTIES IN SELECTIVE OXIDATION REACTIONS. / Kung, Harold H.

In: Industrial & Engineering Chemistry, Product Research and Development, Vol. 25, No. 2, 06.1986, p. 171-178.

Research output: Contribution to journalArticle

@article{0e5a18d906d4477cadd1638bce2776c6,
title = "DESIRABLE CATALYST PROPERTIES IN SELECTIVE OXIDATION REACTIONS.",
abstract = "Heterogeneous oxide-catalyzed selective oxidation reactions can be classified into dehydrogenation and dehydrogenation with oxygen insertion. The oxide properties that are important in each of the steps in these reactions are discussed. The breaking of the C-H bonds in alkanes is facilitated by weakly adsorbed oxygen. The C-H bond breaking of alkenes is enhanced by strongly basic surface lattice oxygen and cations that are soft acid and undergo redox readily. Desorption of alkenes and dienes is enhanced by cations that are hard acid. The selective CO bond formation is controlled by the number and the ease of removal of the available lattice oxygen, while the combustion reaction can be minimized by shortening the residence time of the surface intermediates, weakening the adsorption of the desired products and minimizing the amount of weakly adsorbed oxygen or the density of combustion sites. The function of a promoter is to enhance the rate of the rate- and selectivity-determining steps. Thus the desirable influence of a promoter on the solid depends on the nature of the critical step.",
author = "Kung, {Harold H}",
year = "1986",
month = "6",
language = "English",
volume = "25",
pages = "171--178",
journal = "Industrial & Engineering Chemistry Product Research and Development",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "2",

}

TY - JOUR

T1 - DESIRABLE CATALYST PROPERTIES IN SELECTIVE OXIDATION REACTIONS.

AU - Kung, Harold H

PY - 1986/6

Y1 - 1986/6

N2 - Heterogeneous oxide-catalyzed selective oxidation reactions can be classified into dehydrogenation and dehydrogenation with oxygen insertion. The oxide properties that are important in each of the steps in these reactions are discussed. The breaking of the C-H bonds in alkanes is facilitated by weakly adsorbed oxygen. The C-H bond breaking of alkenes is enhanced by strongly basic surface lattice oxygen and cations that are soft acid and undergo redox readily. Desorption of alkenes and dienes is enhanced by cations that are hard acid. The selective CO bond formation is controlled by the number and the ease of removal of the available lattice oxygen, while the combustion reaction can be minimized by shortening the residence time of the surface intermediates, weakening the adsorption of the desired products and minimizing the amount of weakly adsorbed oxygen or the density of combustion sites. The function of a promoter is to enhance the rate of the rate- and selectivity-determining steps. Thus the desirable influence of a promoter on the solid depends on the nature of the critical step.

AB - Heterogeneous oxide-catalyzed selective oxidation reactions can be classified into dehydrogenation and dehydrogenation with oxygen insertion. The oxide properties that are important in each of the steps in these reactions are discussed. The breaking of the C-H bonds in alkanes is facilitated by weakly adsorbed oxygen. The C-H bond breaking of alkenes is enhanced by strongly basic surface lattice oxygen and cations that are soft acid and undergo redox readily. Desorption of alkenes and dienes is enhanced by cations that are hard acid. The selective CO bond formation is controlled by the number and the ease of removal of the available lattice oxygen, while the combustion reaction can be minimized by shortening the residence time of the surface intermediates, weakening the adsorption of the desired products and minimizing the amount of weakly adsorbed oxygen or the density of combustion sites. The function of a promoter is to enhance the rate of the rate- and selectivity-determining steps. Thus the desirable influence of a promoter on the solid depends on the nature of the critical step.

UR - http://www.scopus.com/inward/record.url?scp=0022736407&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022736407&partnerID=8YFLogxK

M3 - Article

VL - 25

SP - 171

EP - 178

JO - Industrial & Engineering Chemistry Product Research and Development

JF - Industrial & Engineering Chemistry Product Research and Development

SN - 0888-5885

IS - 2

ER -