An IGC Study of Pd/SDB Catalysts for Partial Oxidation of Propylene to Acrylic Acid

Xie, Junyao; Zhang, Qinglin; Chuang, Karl T.

doi:10.1006/jcat.1999.2796

Cited by 40 publications

(18 citation statements)

References 11 publications

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“…This parameter involves the surface properties in terms of potential and acid-base interactions, and it includes different interactions (either physical or electrical) between molecules, as for instance, Keesom, Debye and hydrogen bonding. I sp can be determined from the difference of free energy of adsorption, D(DG), between a polar solute and the real or hypothetical nalkane with the same surface area [19]. The specific interaction parameters, I sp , for the catalysts studied, are listed in Table 3.…”

Section: Interaction Of Reactants and Products With Zeolitesmentioning

confidence: 99%

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Benzylation of benzene over Fe-modified ZSM-5 zeolites: Correlation between activity and adsorption properties

Dı́az

Ordóñez

Vega

et al. 2005

Applied Catalysis A: General

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Section: Interaction Of Reactants and Products With Zeolitesmentioning

confidence: 99%

“…IGC has been widely utilized to study synthetic and biological polymers, copolymers, polymer blends, adsorbents [11][12][13], foods [14], carbon blacks [15], fibbers [16] and catalysts [17,18]. Furthermore, IGC has been used also to propose reaction mechanisms [19].…”

Section: Introductionmentioning

confidence: 99%

Benzylation of benzene over Fe-modified ZSM-5 zeolites: Correlation between activity and adsorption properties

Dı́az

Ordóñez

Vega

et al. 2005

Applied Catalysis A: General

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“…Add to the surface area as parameter of comparison, the boiling point or the vapor pressure could also be used [29][30][31]. This treatment is essentially empirical, but it allows to compare the specific interaction between the surface and the solute molecules, based on a unified scale.…”

Section: Work Of Adhesion: Dispersive and Specific Contributionmentioning

confidence: 99%

“…Xie et al [31] proposed a mechanism for the partial oxidation of propylene to acrylic acid based on the adsorption parameters of reactive and products on styrene divinylbenzene copolymer (SDB) and Pd supported on SDB. Likewise, Díaz et al [53] studied the performance of Fe-ZSM-5 catalysts for benzylation of benzene with benzyl chloride in terms of their chemical and adsorption properties.…”

Section: Applications and Comparison To Other Techniquesmentioning

confidence: 99%

Characterisation of Catalysts and Adsorbents by Inverse Gas Chromatography

Dı́az

Ordóñez

2013

Calorimetry and Thermal Methods in Catalysis

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Inverse Gas Chromatography (IGC), in contrast to analytical chromatography, consists on adsorption of a known solute on an adsorbent whose properties are to be determined. The shape and positions of the peaks supply information about the nature and reactivity of the solid surface. If different probe molecules are used (i.e. polar and apolar molecules, molecules with acid/base properties), it is possible to study the specificity of these interactions. Therefore, IGC can be used both as a tool for both characterizing the adsorption of a given compound on a given solid or for studying the nature (in terms of acid-base properties, polar or apolar interactions, etc.) of the active sites of a certain catalyst. IntroductionSorption measurements are a useful method in the characterization of solid materials. From these data, it is possible to obtain information about the capacity of adsorption, but also thermodynamic properties-enthalpies of adsorption, surface energy-as well as kinetic information, such as diffusion rates. Sorption measurements can be obtained either by static or dynamic methods. Static methods carried out the adsorption measurements under vacuum, after a pre-treatment at high temperature in order to clean the material surface. Dynamic methods use a flowing gas device. Inverse gas chromatography (IGC) is a dynamic method. In comparison to static adsorption systems, dynamic sorption techniques show shorter measurement time, and a wider range of experimental possibilities.In contrast to analytical chromatography, the stationary phase is the sample under investigation, and the mobile phase acts as probe molecule. Thus, the roles of the

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“…It is a fast and easily controlled method. IGC has been widely utilized to study synthetic and biological polymers [15], copolymers [16], polymer blends [17], adsorbents [18], foods [19], carbon blacks [20], fibers [21], clays [22], and catalysts [23][24][25][26][27][28][29][30][31]. In recent years, Diaz et al [14,[25][26][27][28][29]31] reported numerous studies on the surface of catalysts using inverse gas chromatography.…”

Section: Introductionmentioning

confidence: 99%