Kinetics of Chemical Processes on Well-defined Surfaces

Ertl, G.

doi:10.1007/978-3-642-93229-8_3

Cited by 40 publications

(8 citation statements)

References 167 publications

(216 reference statements)

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“…This state can be visualized as a two-dimensional gas, and the reader is referred to a seminal paper by King and Wells describing surface mobility in this state. 19 Experimental evidence for these states is seen in angular distributions of scattered molecular beams, 20 surface residence times of modulated molecular beams, 21 temperature dependence of the reactive sticking probability, S R , 22 nonlinear coverage dependence of S R , 23 and low-temperature (T) adsorption studies. 18 The quantity E a is an apparent activation energy for dissociative chemisorption observed by variation of the surface T. 22 The adsorbed precursor may diffuse on the surface, exercising surface mobility, may dissociatively chemisorb (the reaction leading to film growth), or may desorb.…”

Section: B Weakly Adsorbed Cvd Precursorsmentioning

confidence: 99%

“…This state can be visualized as a two-dimensional gas, and the reader is referred to a seminal paper by King and Wells describing surface mobility in this state surface residence times of modulated molecular beams, temperature dependence of the reactive sticking probability, S R , nonlinear coverage dependence of S R , and low-temperature ( T ) adsorption studies . The quantity E a is an apparent activation energy for dissociative chemisorption observed by variation of the surface T …”

Section: B Weakly Adsorbed Cvd Precursorsmentioning

confidence: 99%

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Surface Chemistry in the Chemical Vapor Deposition of Electronic Materials

Gates¹

1996

Chem. Rev.

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Section: B Weakly Adsorbed Cvd Precursorsmentioning

confidence: 99%

Section: B Weakly Adsorbed Cvd Precursorsmentioning

confidence: 99%

Surface Chemistry in the Chemical Vapor Deposition of Electronic Materials

Gates¹

1996

Chem. Rev.

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“…This shape is similar to those observed by previous investigators such as Garske and Harold (1992) for the reaction on Pt. The CO rate inhibition (Engel and Ertl, 1978;Ertl, 1981) increased the ignition temperature with increasing CO concentration. On the other hand, the higher temperature rise of the ignited states decreased the extinction temperature with increasing CO concentration.…”

Section: Discussionmentioning

confidence: 98%

Oscillating temperature pulses during CO oxidation on a Pd/Al₂O₃ ring

et al. 1997

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Back-and-forth-moving temperature fronts separating regions with high and low temperatures (amplitudes up to 100 K) formed on a Pd on alumina ring during the atmospheric oxidation of carbon monoxide. The back-and-forth front movement reflects the intrinsic nonuniformity of the catalytic system and the impact of global coupling. The ignition and extinction fronts usually moved at different velocities, in agreement with theoretical predictions. Complex spatiotemporal patterns were observed due to smallamplitude temperature fronts that moved on the high-temperature region at a much higher velocity than the high-amplitude fronts. The qualitative motion features were affected by changes in the excess oxygen concentration. The nonun$orm states existed mainly for feed conditions for which the only uniform state was an extinguished one.

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“…The oxidation of carbon monoxide on noble metals has been studied in detail on well-defined surfaces of platinum (Ertl, 1983). The reaction order changes from minus one at high CO coverages to first order at very low partial pressures of carbon monoxide, which reflects a change in reactionmechanism.…”

Section: Kinetics Of "Ppm Reactions"mentioning

confidence: 99%

Assessment of research needs for advanced heterogeneous catalysts for energy applications. Final report: Volume 2, Topic reports

Mills¹

1994

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This report assesses the direction, technical content, and priority of research needs judged to provide the best chance of yielding new and improved heterogeneous catalysts for energy related applications over a period of 5-20 years. It addresses issues of energy conservation, alternate fuels and feedstocks, and the economics and applications that could alleviate pollution from energy processes. Recommended goals are defined in three major, closely-linked research thrusts: I. CATALYTIC SCIENCE --Establish a scientific knowledge of essential catalyst structure/performance relationships and work toward developing the ability to predict the catalytic capabilities of novel materials. II. ENVIRONMENTAL PROTECTION BY CATALYSIS --Prevent pollution by developing economical processes that are free of pollutant formation. Diminish pollution by achieving higher selectivity in fuels and chemicals manufacture and by new and improved catalytic processes for the removal of pollutants. III. INDUSTRIAL CATALYTIC APPLICATIONS --Develop energy-saving, environmentally benign processes for manufacture of liquid fuels and commodity chemicals based on domestic natural gas, biomass, and coal. Emphasize research on synthesis gas (CO + H2) production and conversion, oxidation catalysis, new methods of hydrogen production, and the synthesis of novel materials for catalytic applications.This study was conducted by an eleven-member panel of experts from industry and academia, including one each from Japan and Europe. Discussions were held with a wide variety of authorities, supplementing an intensive review of technical literature. Panel conclusions were assisted by critical peer reviews.There is a high level of confidence that the research proposed can provide catalytic technology which will achieve major economic and environmental improvements in energy applications.Volume I provides a comprehensive Executive Summary, including Research Recommendations. Volume II first presents an in-depth overview of the role of catalysis in future energy technology in chapter 1. Then current catalytic research is critically reviewed and research recommended in eight topic chapters: 2.

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Kinetics of Chemical Processes on Well-defined Surfaces

Cited by 40 publications

References 167 publications

Surface Chemistry in the Chemical Vapor Deposition of Electronic Materials

Surface Chemistry in the Chemical Vapor Deposition of Electronic Materials

Oscillating temperature pulses during CO oxidation on a Pd/Al₂O₃ ring

Assessment of research needs for advanced heterogeneous catalysts for energy applications. Final report: Volume 2, Topic reports

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Kinetics of Chemical Processes on Well-defined Surfaces

Cited by 40 publications

References 167 publications

Surface Chemistry in the Chemical Vapor Deposition of Electronic Materials

Surface Chemistry in the Chemical Vapor Deposition of Electronic Materials

Oscillating temperature pulses during CO oxidation on a Pd/Al2O3 ring

Assessment of research needs for advanced heterogeneous catalysts for energy applications. Final report: Volume 2, Topic reports

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Oscillating temperature pulses during CO oxidation on a Pd/Al₂O₃ ring