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catalytic performance of nanoscopic aluminium trifluoride‐ba

Catalytic Performance of Nanoscopic, Aluminium

Catalytic Performance of Nanoscopic, Aluminium Trifluorideased Catalysts in the Synthesis of (allac)ocopherol S. M. Coman University of Bucharest, Faculty of Chemistry, Department of Chemical Technology and Catalysis, Bdul Regina Elisabeta 412, 030016 Bucharest, Romania

: S. M. Coman, S. M. Coman, S. Wuttke, A. Vimont, M. Daturi, E. Kemnitz

Catalytic Performance of Nanoscopic, Aluminium

Abstract A novel nanoscopic, partly hydroxylated aluminium fluoride was prepared in a sol-gel fluorination synthesis and characterised by IR probe molecules. It

: S. M. Coman, S. M. Coman, S. Wuttke, A. Vimont, M. Daturi, E. Kemnitz

Catalytic Performance of Nanoscopic, Aluminium

Oct 15, 2008 Catalytic Performance of Nanoscopic, Aluminium Trifluorideased Catalysts in the Synthesis of (allac)ocopherol Authors: Simona M. Coman University of Bucharest Stefan Wuttke BCMaterials -...

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Catalytic Performance of Nanoscopic, Aluminium Trifluorideased ...

Nov 03, 2008 A novel nanoscopic, partly hydroxylated aluminium fluoride was prepared in a solel fluorination synthesis and characterised by IR probe molecules. It was shown that this material has, in contrast to high surface area aluminium fluoride (HSlF3) which is one of the strongest Lewis acids, a low amount of strong Lewis acid sites combined with weak and

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Catalytic Performance of Nanoscopic, Aluminium Trifluoride-Based ...

A novel nanoscopic, partly hydroxylated aluminium fluoride was prepared in a sol-gel fluori- nation synthesis and characterised by IR probe mol- ecules. It was shown that this material has, in con- trast to high surface area aluminium fluoride (HS- AlF3) which is one of the strongest Lewis acids, a low amount of strong Lewis acid sites combined with weak and medium strength

catalytic performance of nanoscopic aluminium trifluoridea

catalytic performance of nanoscopic aluminium trifluoridea. ... The effect of synergy between Cr2O3-CeO2 and USY zeolite on the catalytic performance and durability of chromium and cerium modified USY catalysts for decomposition of chlorinated volatile organic compounds, Applied Catalysis B: Environmental, 10.1016/j.apcatb.2011.12.028, 115 ...

Catalytic Performance of Nanoscopic, Aluminium

Article atalytic Performance of Nanoscopic, Aluminium Trifluoride-Based Catalysts in the Synthesis of (all-rac)--Tocopherol Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas.

n-Pentane hydroisomerization catalyzed by metals supported on ...

Sep 05, 2012 Confirmed in this study a highly acidic character of nanoscopic HS-AlF3 is thought to play an essential role in activating alkane molecules. Very stable catalytic performance of metals supported on nanoscopic HS-AlF 3 indicates a considerable durability of their structure. Acknowledgments

Catalytic features of Nb-based nanoscopic inorganic

May 15, 2018 Catalytic performances in terms of lactic acid yields (27.3%) are directly correlated with the niobium content. Based on this state of the art, in this study we explored novel heterogeneous Nb-doped nanoscopic inorganic fluorides (denoted [email protected] 2, were M = Mg, Ca) catalytic systems in one-pot conversion of cellulose to lactic acid.

catalytic performance of nanoscopic aluminium trifluoridea

catalytic performance of nanoscopic aluminium trifluoridea. ... The effect of synergy between Cr2O3-CeO2 and USY zeolite on the catalytic performance and durability of chromium and cerium modified USY catalysts for decomposition of chlorinated volatile organic compounds, Applied Catalysis B: Environmental, 10.1016/j.apcatb.2011.12.028, 115 ...

Catalytic Performance of Nanoscopic, Aluminium Trifluoride

Catalytic Performance of Nanoscopic, Aluminium Trifluoride-Based Catalysts in the Synthesis of (all-rac)--Tocopherol 2008 ㄦ 〉

Catalytic Performance of Nanoscopic, Aluminium Trifluoride

Catalytic Performance of Nanoscopic, Aluminium Trifluoride-Based Catalysts in the Synthesis of (all-rac)--Tocopherol

Aluminium Trifluoride - an overview ScienceDirect Topics

Aluminium Trifluoride. Aluminium trifluoride hydrate exists in two crystalline forms, the -form made by precipitation of an aqueous solution of an aluminium salt with HF contains discrete octahedral molecules [AlF3(H2O)3], whilst the more stable -form, into which it transforms on heating, is a chain polymer [{AlF2(H2O)2(-F)}n]H2O.

Catalytic features of Nb-based nanoscopic inorganic fluorides for an ...

May 15, 2018 The catalytic performance of Ca(OH) 2 in the production of lactic acid from biomass, under the hydrothermal processing conditions, was ... nanoscopic Nb-containing aluminum fluoride, with 25mol% Nb (denoted as [email protected] 3), which was proven to be the most active and selective catalyst for the one-pot synthesis of lactic acid from ...

Catalytic C H Bond Activation at Nanoscale Lewis Acidic Aluminium ...

Nov 29, 2011 Solid nanoscopic Lewis acids as catalysts enable the generation of deuterated alkanes and benzene at mild conditions. The Lewis acids aluminium chlorofluoride (Al 1.0 Cl 0.13 F 2.87; ACF) 39, 40 and high-surface aluminium trifluoride (HS-AlF 3) 41 43 are both capable of the activation of C H/D bonds at temperatures between 40 C and 110 C.

Et3GeH versus Et3SiH: controlling reaction pathways in catalytic

Catalytic C bond activation reactions of mono- and polyfluoroalkanes at Lewis acidic amorphous aluminum chlorofluoride (ACF) are presented. The hydrogen sources Et3GeH or Et3SiH control the selectivity of the conversions. The immobilization of Et3GeH at ACF resulted in catalytic dehydrohalogenation reactio 2017 Catalysis Science amp; Technology HOT Articles

Et 3 GeH versus Et 3 SiH: controlling reaction pathways in catalytic

Request PDF Et 3 GeH versus Et 3 SiH: controlling reaction pathways in catalytic C bond activations at a nanoscopic aluminum chlorofluoride

Aluminum Chloride as a Solid Is Not a Strong Lewis Acid - ACS

Aluminum chloride is used extensively as Lewis acid catalyst in a variety of industrial processes, including Friedelrafts and Cl/F exchange reactions. There is a common misconception that pure AlCl3 is itself a Lewis acid. In the current study, we use experimental and computational methods to investigate the surface structure and catalytic properties of

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic

May 18, 2016 ACF A catalysis first: Aluminum chlorofluoride (ACF) catalyzes the hydroarylation of olefins under remarkably mild conditions, including conversions of fluorinated arenes. The extraordinarily strong Lewis acid character of the amorphous solid facilitates the formation of carbocation-like species from alkenes and fluoroalkenes and subsequent ...

aluminum plate cooler - AIR AUBRAC

Amazon: cooling plate Jan 30, 2022 Amazon: cooling plate6x7 Inches Cooling Plate for Collection - Food Grade Working Surface Made of 606Amazon: 6x7 Inches Cooling Plate for Collection - Food Grade Working Surface Made of 6061 Aluminum with a Fabric Bag : Industrial ScientificAideepen TEC1-12706 12V 6A 60W 5pcs Heatsink Thermoelectric Cooler Cooling

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic ...

We report on hydroarylation reactions of arenes with olefins under very mild conditions catalyzed heterogeneously by aluminum chlorofluoride (ACF; AlClxF3, x0.050.25). The reactions of benzene and toluene with ethylene or propylene proceed with high conversions to afford various alkylated arenes. For cyclohexene and 1exene, the reactions require higher temperatures

Catalytic C H Bond Activation at Nanoscale Lewis Acidic Aluminium ...

Nov 29, 2011 Solid nanoscopic Lewis acids as catalysts enable the generation of deuterated alkanes and benzene at mild conditions. The Lewis acids aluminium chlorofluoride (Al 1.0 Cl 0.13 F 2.87; ACF) 39, 40 and high-surface aluminium trifluoride (HS-AlF 3) 41 43 are both capable of the activation of C H/D bonds at temperatures between 40 C and 110 C.

Catalytic C H Bond Activation at Nanoscale Lewis Acidic Aluminium ...

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic ...

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic Aluminum Chlorofluoride. Dr. Beatriz Calvo. Humboldt-Universitt zu Berlin, Department of Chemistry, Brook-Taylor-Strae 2, 12489 Berlin, Germany. Search for more papers by this author.

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic ...

May 01, 2016 Request PDF Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic Aluminum Chlorofluoride We report on hydroarylation reactions of arenes with olefins under very mild conditions ...

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic

May 18, 2016 ACF A catalysis first: Aluminum chlorofluoride (ACF) catalyzes the hydroarylation of olefins under remarkably mild conditions, including conversions of fluorinated arenes. The extraordinarily strong Lewis acid character of the amorphous solid facilitates the formation of carbocation-like species from alkenes and fluoroalkenes and subsequent ...

Catalytic C-H Bond Activation at Nanoscale Lewis Acidic Aluminium ...

H/D exchange reactions between methane and deuterated solvents such as bezene-d6 and cyclohexane-d12 are heterogeneously catalysed by a nanoscopic aluminium chlorofluoride (ACF = AlClxF3-x x 0 ...

Tailoring nanoscopic confines to maximize catalytic activity of ...

May 25, 2017 Understanding and maximizing the rates of acid-catalysed dehydration of alcohols is key to many synthetic strategies 1,2,3,4,5,6.For

Aluminum Chloride as a Solid Is Not a Strong Lewis Acid - ACS

Aluminum chloride is used extensively as Lewis acid catalyst in a variety of industrial processes, including Friedelrafts and Cl/F exchange reactions. There is a common misconception that pure AlCl3 is itself a Lewis acid. In the current study, we use experimental and computational methods to investigate the surface structure and catalytic properties of

Et3GeH versus Et3SiH: controlling reaction pathways in catalytic

Mar 05, 2022 Catalytic C bond activation reactions of mono- and polyfluoroalkanes at Lewis acidic amorphous aluminum chlorofluoride (ACF) are presented. The hydrogen sources Et3GeH or Et3SiH control the selectivity of the conversions. The immobilization of Et3GeH at ACF resulted in catalytic dehydrohalogenation reactio 2017 Catalysis Science amp; Technology HOT

Nanoscopic Metal Fluorides as Promising Sintering Aids for

January 2011 Nanoscopic Metal Fluorides as Promising Sintering Aids for High-Performance Alumina Ceramics 33 The as-prepared samples were used for the characteriza-tion of the materials properties: sintered density (hydro-static weighing), sintered structure (crystal size, porosi-ty, inhomogeneities) by SEM on polished and thermally

Novel multi-component flame retardant system based on nanoscopic

Jan 01, 2017 1. Introduction. Aluminium tri-hydroxide (ATH) is the largest flame retardant (FR) in use by weight. Over 100,000 ton/year are used in the United States ; it represents about 53% of European FR consumption .ATH starts to decompose in the range 180220 C with the formation of water and alumina Eq.. (1) 2 Al OH 3 Al 2 O 3 + 3 H 2 O H = 1050 kJ kg 1 The effect

Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic ...

We report on hydroarylation reactions of arenes with olefins under very mild conditions catalyzed heterogeneously by aluminum chlorofluoride (ACF; AlClxF3, x0.050.25). The reactions of benzene and toluene with ethylene or propylene proceed with high conversions to afford various alkylated arenes. For cyclohexene and 1exene, the reactions require higher temperatures

Comparison of acidic site quantification methods for a series of ...

1. Introduction Solid acids are a widely used class of catalysts for petrochemical processes. Related to the concepts of green chemistry of avoiding waste and toxic by-products, solid acidic catalysts become increasingly important for the production of fine, specialty and pharmaceutical chemicals. 13 The catalytic activity of these catalysts is related to acidic Lewis (LS) and/or

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