Seminar on "Catalyst characterization using temperature programmed techniques"

Negi, Anjali
April 2004
Chemical Business;Apr/Jun2004, Vol. 18 Issue 2, p84
Trade Publication
Highlights the events and lectures in a seminar about adsorption and temperature programmed techniques for characterization of heterogeneous catalysts, organized by Kunash Instruments Private Ltd. in New Delhi, India on February 11, 2004. Physical and chemical characteristics of heterogeneous solid surfaces; Overview of the growth and innovation of Micromeritics Instrument Corp.; Events responsible for the formation of a chemisorbed overlayer when a gas molecule impinges upon a solid surface.


Related Articles

  • Review of the heats of chemisorption of gases at metals in the context of the problem of ‘Heterogeneous’ vs. ‘Homogeneous’ catalytic surfaces. Ostrovskii, V. E. // Journal of Thermal Analysis & Calorimetry;Feb2009, Vol. 95 Issue 2, p609 

    A critical review of available data on the heats of chemisorption of gases at metals is given. The effect of upward technical and procedural trends on measured results is demonstrated. The results for surfaces approached to their states occurring in catalytic processes are accentuated. Several...

  • Complex pathways in dissociative adsorption of oxygen on platinum. Zambelli, T.; Barth, J. V. // Nature;12/4/1997, Vol. 390 Issue 6659, p495 

    Presents research which showed that the chemisorption process for adsorption of oxygen on a platinum surface may be more complicated than the Langmuir model implies. Gas adsorption as basis of heterogeneous catalysis; Gas-surface interactions; Macroscopic kinetics of heterogeneous catalytic...

  • Heterogeneous Saltation: Theory, Observation and Comparison. Yaping Shao; Mikami, Masao // Boundary-Layer Meteorology;May2005, Vol. 115 Issue 3, p359 

    In the theory of saltation, under development since the 1940s, it is often assumed that saltation is homogeneous, i.e., saltating particles are uniform in size and follow identical trajectories. This assumption is a limitation to the development of saltation theory. In this paper, as in some...

  • The nature of surface complexation: a continuum approach. Butkus, M. A.; Grasso, Domenico // Environmental Geology;Feb2001, Vol. 40 Issue 4/5, p446 

    An alternative continuum approach for studying the nature of surface complexation reactions is presented. This new technique may enhance our understanding of surface complexation reactions in heterogeneous media that are often encountered in natural and engineered systems. Interpretation of...

  • Effect of Physical Adsorption on Heat Fluxes to Catalytic Surfaces in Carbon Dioxide. Kovalev, Valery; Afonina, Nataly; Gromov, Valery // AIP Conference Proceedings;2003, Vol. 663 Issue 1, p1001 

    A model of the heterogeneous catalysis of a dissociated carbon dioxide mixture on high-temperature heat shield coating has been developed. The model takes into account both chemical and physical adsorption and desorption of oxygen atoms at vacant active sites on the surface; recombination of...

  • Polymer adsorption on nanoheterogeneous surfaces: Impact of size and density of heterogeneous sites. Chun, Kyoung-Yong; Huang, Yu-Wen; Gupta, Vinay K. // Journal of Chemical Physics;2/15/2003, Vol. 118 Issue 7, p3252 

    Model chemically heterogeneous surfaces containing different density of heterogeneous sites were used to study the adsorption of poly(acrylic acid) (PAA) from aqueous solutions. The heterogeneous surfaces were prepared by self-assembly of ω-functionalized alkanethiols on gold substrates such...

  • Random heteropolymers in layered fluids. Garel, T.; Orland, H.; Shakhnovich, E. I. // Journal of Chemical Physics;8/1/1990, Vol. 93 Issue 3, p2043 

    We study a simple model of a random heteropolymer, without excluded volume, in layered fluid systems of the form (i) ABA or ABC, where A, B, C denote three immiscible fluids, (ii) AB+hard wall, (iii) ABABA... . The quenched randomness is contained in the affinities {ξj; j=1,2,...,N} of the N...

  • Density functional theory studies of the adsorption of ethylene and oxygen on Pt(111) and Pt[sub 3]Sn(111). Watwe, Ramchandra M.; Cortright, Randy D.; Mavrikakis, Manos; Nørskov, Jens K.; Dumesic, James A. // Journal of Chemical Physics;3/8/2001, Vol. 114 Issue 10 

    Density functional theory, employing periodic slab calculations, was used to investigate the interactions of ethylene and oxygen with Pt(111) and Pt[sub 3]Sn(111). The predicted energetics and structures of adsorbed species on Pt(111) are in good agreement with experimental data. The binding...

  • Mesoporous aluminosilicates as components of gas oil cracking and higher-alkane hydroisomerization catalysts. Lysenko, S. V.; Kryukov, I. O.; Sarkisov, O. A.; Abikenova, A. B.; Baranova, S. V.; Ostroumova, V. A.; Kardashev, S. V.; Kulikov, A. B.; Karakhanov, E. A. // Petroleum Chemistry;May2011, Vol. 51 Issue 3, p151 

    Mesoporous aluminosilicates with a Si/Al ratio of 5 to 20, a pore diameter of 30 to 84 �, and a specific surface area up to 1030 cm/g have been prepared using hexadecylamine and Pluronic P as templates. These materials exhibit high activity in the cracking of hydrotreated vacuum gas oil....


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics