An alumino-silicate zeolite, Linde Type-A (LTA) has been prepared from aluminium powder and sodium metasilicate by hydrothermal process. The zeolite was characterized by FTIR and X-ray diffraction (XRD) analysis and by measuring the surface acidity using KOH as adsorbate. The surface acidity of LTA zeolite varied greatly with varying synthesized conditions such as crystallization temperature, c...

We are interested inferring rate processes on networks. In particular, given a network's topology, the stationary populations on its nodes, and a few global dynamical observables, can we infer all the transition rates between nodes? We draw inferences using the principle of maximum caliber (maximum path entropy). We have previously derived results for discrete-time Markov processes. Here, we tr...

Nanomaterials with their three-dimensional structure and defined size and shape are considered to be suitable candidates for proper alignment with prochiral substrates for unidirectional introduction of reacting species to induce an asymmetric center. We herein report the design and development of a truly recyclable heterogeneous catalyst, nanocrystalline magnesium oxide, for the asymmetric Hen...

It was found 1 that Ro ... 0 distances in cyclic dimers of p-substituted benzoic acids in the crystalline state do not follow the Hammett rule. The Ro ... 0 values often serve as an approximate measure of hydrogen bond strength.2 Since substituent constants op and R0 ... 0 express the Bronsted and the Lewis acidity of the carboxylic group in solution and in the crystalline state, respectively, ...

Simple and low temperature hydrothermal process is employed to synthesize exotic nanostructures of TiO2. The nanostructures are obtained merely by changing the nature of the precursors and processing parameters. The chloride and isopropoxide salts of titanium are used to grow high quality thin films comprising anatase nanocorals, rutile nanorods and rutile nanoflowers respectively. A novel rout...

In order to develop new, efficient and environmentally friendly methods for the preparation of practically valuable esters carboxylic acids, studies hydroalkoxycarbonylation reaction a number terminal olefins normal structure (hexene-1, heptene-1, octene-1, nonene-1) with carbon monoxide alcohols in presence metal complex catalysts based on palladium phosphine complexes at low pressures (≤ 20 a...

The all-alkyl α-tertiary amino acid scaffold represents an important structural feature in many biologically and pharmaceutically relevant molecules. Syntheses of this class molecule, however, often involve multiple steps require activating auxiliary groups on the nitrogen atom or tailored building blocks. Here, we report a straightforward, single-step, modular methodology for synthesis esters....

Keggin heteropolyacids (HPAs) are metal–oxygen clusters with strong Bronsted acidity. The conversion of HPAs to metal salts can result in Lewis acidity, improving their performance oxidation reactions. In this review, the main routes for synthesis Keggin-type salts, as well use catalysts processes a plethora substrates, such monoterpenes, olefins, aldehydes, terpene alcohols, and aromatics, des...