Materials Literature
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Efek penambahan senyawa turunan kaliksarena yang larut dalam air 5,11,17,23-tetra(dimetilamino) metil-4,6,10,12,16,18,22,24-oktahidroksi-2,8,14,20-tetrametil kalik[4]arena (TDMACMKR) terhadap pembentukan endapan kerak kalsium karbonat telah diamati dengan menggunakan metode seeded experiment dan bottle roller bath . P…
Size and shape effects are discussed, in depth, using examples of selected industrially relevant processes with particular emphasis on the fabrication and characterisation of materials, and the modelling and testing of their structure-property relationships.
L’étude des résonances géantes monopolaires isoscalaires (ISGMR) et des résonances géantes quadrupolaires isoscalaires (ISGQR) dans les noyaux stables, a permis d’obtenir ces dernières décennies des informations fondamentales sur la structure et la matière nucléaire. En particulier, le centroïde de la ISGMR peut être…
This dissertation presents several studies that look at the unique properties and applications of metals and semiconductors when the dimensions of these materials are confined to the nanoscale. ? Chapter 1 provides background material that will aid in understanding the research presented in this dissertation. It begin…
The state of the art of the application of physicochemical methods such as FTIR, EPR, UV–vis, XPS, NMR, XAFS, and fluorescence and chemiluminescence spectroscopies for oxidative in situ photocatalytic investigations is compiled. In situ FTIR studies yield valuable information about surface species, reaction intermedia…
This chapter contains sections titled: Introduction Strategies for the Creation of Enantioselective Heterogeneous Catalysts Concluding Remarks–A Comparison of the Various Approaches to Heterogeneous Enantioselective Catalysts References
X-Ray microtomography was used to follow the coarsening of the structure of a ternary silicate glass experiencing phase separation in the liquid state. The volumes, surfaces, mean and Gaussian curvatures of the domains of minority phase were measured after reconstruction of the 3D images and segmentation. A linear gro…
Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. Such identification is not intended to imply recommendation
This chapter provides an overview of the templated synthesis of porous inorganic architectures with special focus on new synthetic trends. Moreover, the specific role of these porous materials in the field of clean energy, sustainable processes, and environmental protection has been addressed.
It has come to the attention of IOP Publishing that some of the data in this paper appears to have been fabricated. The Editorial Board has investigated this and found that the XPS spectra shown in figure 3 all exhibit an identical noise pattern that is unphysical and is inconsistent with the different samples being i…
Un matériau est dit « barrière » quand il induit un retard à la diffusion de la molécule « pénétrante ». Il existe peu de possibilités pour moduler les propriétés barrière d'un matériau donné (ex. emballage). La possibilité technologique la plus utilisée consiste à augmenter la tortuosité du chemin du pénétrant par l'…
This chapter contains sections titled: Introduction Metal-Catalyzed Alcohol Selox Oxide, Sulfide, and Vanadate Catalysts Solvent Selection In Situ and Operando X-Ray Studies of Selox Catalysts Conclusions References
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This chapter contains sections titled: Metal–Organic Frameworks as Heterogeneous Catalysts Applications in Carbon–Carbon Bond Formation Applications in Oxidation, Carbon–Oxygen, and Carbon–Nitrogen Bond Formation Applications in Asymmetric Synthesis Concluding Remarks References
Immobilization and site isolation of catalytically active precursors onto solid surfaces constitute a typical method for realizing high-performance heterogeneous catalysts. Site isolation sometimes not only significantly improves catalyst stability, but also provides unique activity and selectivity on heterogeneous su…
This chapter contains sections titled: Introduction Catalyst Nascence Synthesis of Silicalite-1 Molecular Sieves Preparation of Supported Metal Catalysts Catalyst Life Elucidating the Reaction Mechanism of Aerobic Oxidation of Benzyl Alcohol Determination of the Active Sites in Aerobic Oxidation of Benzyl Alcohol Cata…
We consider the $Q$-state Potts model on $\mathbb Z^d$, $Q\ge 3$, $d\ge 2$, with Kac ferromagnetic interactions and scaling parameter $\ga$. We prove the existence of a first order phase transition for large but finite potential ranges. More precisely we prove that for $\ga$ small enough there is a value of the temper…
Ambient-pressure X-ray photoelectron spectroscopy (APXPS) allows the investigation of liquid and solid interfaces with gases at pressures in the Torr range, and is thus an excellent tool to study heterogeneous chemical reactions at surfaces in the environment, as well as in technical applications such as catalysis and…
Bifurcation problems in which periodic boundary conditions or Neumann boundary conditions are imposed often involve partial differential equations that have Euclidean symmetry. As a result the normal form equations for the bifurcation may be constrained by the “hidden” Euclidean symmetry of the equations, even though…
Abstract. We consider (generalized) Kolakoski sequences on an alphabet with two even numbers. They can be related to a primitive substitution rule of constant length ℓ. Using this connection, we prove that they have pure point dynamical and pure point diffractive spectrum, where we make use of the strong interplay bet…