Recent Advances in Catalysis Over Mesoporous Molecular Sieves

We describe the first examples of Friedländer reactions efficiently catalyzed by carbon materials. We report herein a series of acidic activated carbon materials, which can be considered as an environmentally friendly, cheaper alternative to the traditional acidic mesoporous silicates or even zeolites for the synthesis of quinolines/quinolones. Textural parameters of the acidic activated carbon materials together with their acidic properties are important factors that affect the reaction selectivity. Some mechanistic details have been addressed by computational calculations.

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“…[1] Among them, those based on mesoporous structures have recently attracted considerable attention.…”

Section: Introductionmentioning

confidence: 99%

Acid‐Activated Carbon Materials: Cheaper Alternative Catalysts for the Synthesis of Substituted Quinolines

et al. 2013

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“…In this respect, encapsulation/ immobilization of metal complexes in porous materials, especially zeolites, gained much interest in the last few decades [1][2][3][4][5][6][7]. The encapsulation complexes serve as functional mimic of enzymes, possessing many advantageous features of both homogeneous and heterogeneous catalysis.…”

Section: Introductionmentioning

confidence: 99%

Metallo Salicylidenetriazol Complexes Encapsulated in Zeolite-Y: Synthesis, Physicochemical Properties and Catalytic Studies

Abbo

Titinchi

2010

Top Catal

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Chromium(III), zinc(II) and nickel(II) complexes of thio-Schiff base derived from salicylaldehyde and 4-amino-2,4-dihydro-1,2,4-triazole-5-thione have been encapsulated in the nanopores of zeolite-Y by a flexible ligand method. The prepared encapsulated metal complexes have been characterized by surface analysis (XRD and N 2 adsorption/desorption), spectroscopic methods, chemical and thermal analyses. The various techniques of characterization used demonstrated that these complexes were effectively encapsulated in the zeolite supercages without structural modification or loss of crystallinity of the zeolite framework. The encapsulated complexes were screened as heterogeneous catalysts for various oxidation reactions such as phenol, cyclohexene and styrene oxidation, using H 2 O 2 as an oxidant. Under the optimized conditions, these catalysts exhibited high to moderate activity. After a few cycles these catalysts were found to be stable and could be reused after recovering without detectable catalyst leaching or significant loss of activity.

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“…Firstly, to show catalytic activity, the inner surfaces of the porous catalysts often need to be functionalized, as, for example, silicates per se are normally unreactive [119,130]. A widely applied method to render zeolitic frameworks catalytically active is to impregnate their interior surfaces with catalyst precursor solutions [30].…”

Section: Synthesis Of Porous Nanocatalystsmentioning

confidence: 99%

Nanocatalysis: Academic Discipline and Industrial Realities

Olveira

Forster

Seeger

2014

Journal of Nanotechnology

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Nanotechnology plays a central role in both academic research and industrial applications. Nanoenabled products are not only found in consumer markets, but also importantly in business to business markets (B2B). One of the oldest application areas of nanotechnology is nanocatalysis-an excellent example for such a B2B market. Several existing reviews illustrate the scientific developments in the field of nanocatalysis. The goal of the present review is to provide an up-to-date picture of academic research and to extend this picture by an industrial and economic perspective. We therefore conducted an extensive search on several scientific databases and we further analyzed more than 1,500 nanocatalysis-related patents and numerous market studies. We found that scientists today are able to prepare nanocatalysts with superior characteristics regarding activity, selectivity, durability, and recoverability, which will contribute to solve current environmental, social, and industrial problems. In industry, the potential of nanocatalysis is recognized, clearly reflected by the increasing number of nanocatalysis-related patents and products on the market. The current nanocatalysis research in academic and industrial laboratories will therefore enable a wealth of future applications in the industry.

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Recent Advances in Catalysis Over Mesoporous Molecular Sieves

Cited by 241 publications

References 182 publications

Acid‐Activated Carbon Materials: Cheaper Alternative Catalysts for the Synthesis of Substituted Quinolines

Acid‐Activated Carbon Materials: Cheaper Alternative Catalysts for the Synthesis of Substituted Quinolines

Metallo Salicylidenetriazol Complexes Encapsulated in Zeolite-Y: Synthesis, Physicochemical Properties and Catalytic Studies

Nanocatalysis: Academic Discipline and Industrial Realities

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