Temporal analysis of products: basic principles, applications, and theory

Yablonsky, Grigoriy; Olea, Maria; Marin, Guy

doi:10.1016/s0021-9517(02)00109-4

Cited by 93 publications

(43 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…7 Transient kinetic studies are an alternative method that is based upon the rapid changing of one of the reaction variables (temperature, flow rate, pressure or concentrations). 8,[14][15][16] This induces a perturbation in the system and then the time dependence of the relaxation/response of the system is monitored. With higher time resolution, transient kinetics can provide an insight into the reaction mechanism including short-lived intermediate species that are typically not accessible through steady-state studies.…”

Section: Steady-state Versus Transient Kinetic Studiesmentioning

confidence: 99%

“…5 With a view to bringing this technique to a wider audience, including newcomers to this field, the current work is designed to highlight the achievements of TAP, its most recent developments as well as to discuss some aspirations for the future. The analytical mathematical models for the TAP methodology are extensively discussed in the literature, 16,19 so only specific aspects are discussed in section 4 of the current document.…”

Section: Steady-state Versus Transient Kinetic Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Forty years of temporal analysis of products

Morgan

Maguire

Fushimi

et al. 2017

Catal. Sci. Technol.

131

101

View full text Add to dashboard Cite

A detailed understanding of reaction mechanisms and kinetics is required in order to develop and optimize catalysts and catalytic processes. While steady-state investigations are known to give a global view of the catalytic system, transient studies are invaluable since they can provide more comprehensive insight into elementary steps. For almost forty years temporal analysis of products (TAP) has been successfully utilized for transient studies of gas phase heterogeneous reactions, and there have been a number of advances in instrumentation and numerical modeling methods in that time. Since TAP is a complex methodology it is often viewed as a niche specialty. With the purpose to make TAP more relevant and approachable to a wider segment of the catalytic research community, part of the intention of this work is to highlight the significant contributions TAP has made to elucidating mechanistic and kinetic aspects of complex, multistep heterogeneous reactions. With this in mind, an outlook is also disclosed for the technique in terms of what is needed to revitalize the field and make it more applicable to the recent advances in catalyst characterization (e.g. operando modes).

show abstract

Section: Steady-state Versus Transient Kinetic Studiesmentioning

confidence: 99%

Section: Steady-state Versus Transient Kinetic Studiesmentioning

confidence: 99%

Forty years of temporal analysis of products

Morgan

Maguire

Fushimi

et al. 2017

Catal. Sci. Technol.

131

101

View full text Add to dashboard Cite

show abstract

“…It may be helpful as a method to investigate surface processes. Non-steady state techniques such as step switching input flows [148], temporal analysis of products [149], temperature programming [150], as well as impulse response and frequency analysis [151] are powerful methods to investigate reaction kinetics and mechanisms. In pulsed activation the temperature variation at the catalyst is several orders of magnitude faster and of higher amplitude than what has been possible before.…”

Section: Applicability As a Research Toolmentioning

confidence: 99%

Pulsed activation in heterogeneous catalysis

Stolte¹,

Özkan²,

Thüne³

et al. 2013

Applied Thermal Engineering

View full text Add to dashboard Cite

“…Throughout this paper, typical experimental data from a Temporal Analysis of Products (TAP) setup are used for illustration purposes (Gleaves et al, 1988(Gleaves et al, , 1997Yablonsky et al, 2003). The latter contains a tubular reactor (length typically 3 cm, diameter 5 mm) loaded with a fixed bed of solid catalyst and/or inert particles.…”

Section: Experimental Time Seriesmentioning

confidence: 99%

Second-order statistical regression and conditioning of replicate transient kinetic data

Roelant¹,

Constales²,

Keer³

et al. 2008

Chemical Engineering Science

View full text Add to dashboard Cite

A new method has been developed to estimate physico-chemical parameters from transient kinetic data: second-order statistical regression (SOSR). It allows to account for heteroskedasticity and nonwhiteness of the noise in the time series measured. SOSR makes use of replicates to estimate the second-order statistics, i.e. the autocovariance pattern of the noise. A sample principal noise component analysis of the experimental time series allows nonlinear least-squares (NLSQ) regression of the latter. The method has been validated by regression of artificially generated experimental data and the results have been compared with those obtained with direct NLSQ regression. The SOSR has also been applied to the irreversible adsorption of oxygen on a reduced vanadia/silica catalyst and the interaction of propane with a copper/ceria catalyst, as studied with a Temporal Analysis of Products (TAP) setup. In general, compared with those obtained with direct NLSQ regression, the parameter estimates and their confidence intervals are more accurate.

show abstract

Temporal analysis of products: basic principles, applications, and theory

Cited by 93 publications

References 33 publications

Forty years of temporal analysis of products

Forty years of temporal analysis of products

Pulsed activation in heterogeneous catalysis

Second-order statistical regression and conditioning of replicate transient kinetic data

Contact Info

Product

Resources

About